Restart the computer Cause Solution:
1, there may be a BIOS
settings problem, restore the default settings into the BIOS or the
motherboard battery out, Flip, discharge. Objective: To restore the
default settings for the BIOS values, excluding the BIOS default
automatic restart or shutdown cooling phenomenon.
2, the restart
occurs before the restart occurs if the application software or download
software to run the program, then restart the plc controller suppliers software
may be caused, in general the program to uninstall and re-install the
software, if the fault persists, then the software itself is wrong, you
can not to use.
3, anti-virus software in Safe Mode using viruses, troubleshooting if the restart, restart the failure is caused by a virus.
4,
boot into safe mode by pressing F8 after the exit in normal mode. Also
available system comes with System Restore feature to restore, if the
restart troubleshooting, restart the system file damage is caused.
5,
if the fault persists, then check the power supply, power quality is
poor, aging or power is too small to meet the power needs of the various
parts of a computer, high-quality power supply can be replaced, if
troubleshooting is to restart the power failure caused.
6, a device restart when hot-plug if the computer going on, according to the first three resolved.
7, then use the process of elimination, check memory, video card, CPU, CPU fan, motherboard, etc.
8, check the memory, memory low quality, poor Nanda industrial automation plc cooling,
overclocking, different brands of memory mixed interpolation and CAS
setting too low can cause the computer to restart, test method can be
used to replace the memory, and memory in the BIOS parameters are
adjusted accordingly .
9, check the motherboard, motherboard
aging, capacitor failure or exploding, motherboard and chassis backplane
can be caused by a short circuit, etc. reboot, you can remove the
motherboard from the chassis to inspect or test, then check the CPU
heatsink fan base silicone is dry, If dry, the CPU fan on silica gel to
clean and re-coated with silicone to good. Then check the CPU fan
rotation, and the CPU temperature is normal.
10, cleaning method: a host computer through the Nanda cpu module plc dust
components to be cleaned troubleshooting methods. Dust is also caused
by one computer to automatically restart failed factors, dust can cause
aging of components, pin oxidation, poor contact and short circuit
faults. For dust caused by these failures, the general use of more
effective cleaning method.
Analog inputs, (meaning the module is to convert your voltage or current value to digital, then you can calculate the slope of the current form of the temperature or pressure.) If you ask to read the temperature or pressure values that you must bring the analog sensor output and analog output.
2015年3月19日星期四
2015年3月16日星期一
Some problems plc analog output modules in
Upper and lower limits of analog input values are set to 20 and 0 ,
had everything normal, in the absence of the analog signal access , the
software displays a value of 0 , there is signal Nanda plc digital input module access
, they also have a normal display, but under normal use two or three
days , the upper and lower limits remain unchanged, the analog input
value in the absence of wiring is 6.8 , all the channels I have tried
are 6.8 , then the company gave me a new simulation input module ,
installed after the beginning is normal, but it is the same problem in a
couple of days later , I ask an expert what causes ?
Also this PLC as well as a relay output module , 2, 3 and 4-channel connection of solenoid valves, found often there will be Nanda micro smart plc a problem , sometimes when I start solenoid valve, status lights all of a sudden relay output modules are extinguished , the network does not pass , after a minute or so , PLC will automatically linked to the network, the solenoid valve to start this and what is the reason ? I have checked the wiring before , are not the problem
You said power module before Nanda modular plc I checked, input 220V, power module output is 5.09V, I then adjust it to 5.01V, it should be no problem , there is nothing good advice.
Also this PLC as well as a relay output module , 2, 3 and 4-channel connection of solenoid valves, found often there will be Nanda micro smart plc a problem , sometimes when I start solenoid valve, status lights all of a sudden relay output modules are extinguished , the network does not pass , after a minute or so , PLC will automatically linked to the network, the solenoid valve to start this and what is the reason ? I have checked the wiring before , are not the problem
You said power module before Nanda modular plc I checked, input 220V, power module output is 5.09V, I then adjust it to 5.01V, it should be no problem , there is nothing good advice.
2015年3月9日星期一
plc analog output modules products emerging in recent years introduced a number of application areas
( 1 ) In recent years , and Lee Mining PLC product innovation , its
reliability, performance and other advantages have been widely
recognized by users. And Lee mineral widely used in low voltage feed
switch , high Nanda Power supply module plc voltage
power distribution equipment , combination switch , load center and
other products with PLC products are gradually replaced protectors and
ordinary PLC microcontroller products , equipment and mine started when
Lee became some of the PLC mining equipment and advantages of selling
the company's products .
( 2 ) the use of PLC to develop a new type of solar thermal water heaters, solar water heaters can overcome the traditional presence affected by climate , temperature instability and other defects , but also focus on water supply for multiple users. Siemens S7-200 series PLC control operation of solar thermal water heaters with water temperature , water PLC Programmable Logic Controller level and flow control corresponding temperature , level and flow sensors and PLC analog input extension implementation. Meanwhile , PLC and Siemens integrated text display T D400 achieve interactive interface for the collector water heater temperature and water level inside the real-time online display and settings.
( 3 ) With the development and social progress of science and technology, automatic doors in everyday life has also been widely used. Automatic door systems in the past generally use logic control module , due to the high failure rate , low reliability , convenient maintenance and other reasons, will be phased out . Used Mitsubishi PLC automatic door control system as a controller to a transmitter and a receiver of ultrasonic switch photoelectric switch as an input device of the system, two different sensor input control signal to the PLC, the PLC system using code tables , I / O allocation table and automatic door control actions such as the implementation process in order to achieve control of the door open or closed ( rising or falling ) .
( 2 ) the use of PLC to develop a new type of solar thermal water heaters, solar water heaters can overcome the traditional presence affected by climate , temperature instability and other defects , but also focus on water supply for multiple users. Siemens S7-200 series PLC control operation of solar thermal water heaters with water temperature , water PLC Programmable Logic Controller level and flow control corresponding temperature , level and flow sensors and PLC analog input extension implementation. Meanwhile , PLC and Siemens integrated text display T D400 achieve interactive interface for the collector water heater temperature and water level inside the real-time online display and settings.
( 3 ) With the development and social progress of science and technology, automatic doors in everyday life has also been widely used. Automatic door systems in the past generally use logic control module , due to the high failure rate , low reliability , convenient maintenance and other reasons, will be phased out . Used Mitsubishi PLC automatic door control system as a controller to a transmitter and a receiver of ultrasonic switch photoelectric switch as an input device of the system, two different sensor input control signal to the PLC, the PLC system using code tables , I / O allocation table and automatic door control actions such as the implementation process in order to achieve control of the door open or closed ( rising or falling ) .
2015年3月5日星期四
PLC analog input modules open forum
PLC is one of the most important factory automation control devices ,
with a wide range of applications in the factory. As technology
advances , PLC has been out of the " logic control ," the simple scope ,
PLC has more analog-digital conversion , digital to analog conversion,
high-speed counting , speed control , position control, axis positioning
control, temperature control, PID control , telecommunications and
high-level language programming and other functions.
Due to historical reasons, the development of technology , the traditional PLC products is still relatively closed . But in the mutual PLC Programmable Logic Controller exchange of information on real-time , deepening liquidity requirements today , PLC control to continue to adapt to the needs of the plant , openness trend has become increasingly evident. With the continuous opening of the PLC , which has a much richer functionality . This month we will be more open to discuss the development of PLC functions .
Open open trend has emerged PLC is inevitable , closed PLC will give users a great deal of inconvenience. For example, the need to expand a factory or during use and the introduction of a number of other manufacturers of equipment , PLC because each vendor uses a different means of communication, can not communicate with each other , it will cause the new system is not compatible with the original system . Siemens have noticed several years ago this problem and focus on the promotion of Totally Integrated Automation (TIA) concept , with the PROFIBUS fieldbus technology to facilitate communication with higher performance PLC . Open PLC is inevitable . Judging from the current development of automation , overall system performance is more important in the processing equipment , which makes people pay more attention with the performance PLC and peripheral devices , the protagonist of the status of the PLC has been gradually fading. Effectively carry PLC and peripheral devices communicate , not only for the input , output , analog , etc., also includes servo , scanning and intelligent instruments and so there will be more demand . Now Nanda Power supply module plc users in many applications the choice of the PLC are no longer considered too technical degree , but the question of which brand to choose from. These are important reasons to promote the PLC open. The current situation on the market trend also proved PLC openness . Although the major PLC manufacturers according to their respective surfaces are still ways to promote the production of PLC, but if you observe carefully , all manufacturers have been from a different perspective on the function of the open PLC made improvements . Many types of PLC can communicate using a specific method , the Internet .
But we should also be aware that , although we are in the efforts to open , but may be due to the open deep meaning , so that there is no guarantee that he would dare the PLC is truly open .
Due to historical reasons, the development of technology , the traditional PLC products is still relatively closed . But in the mutual PLC Programmable Logic Controller exchange of information on real-time , deepening liquidity requirements today , PLC control to continue to adapt to the needs of the plant , openness trend has become increasingly evident. With the continuous opening of the PLC , which has a much richer functionality . This month we will be more open to discuss the development of PLC functions .
Open open trend has emerged PLC is inevitable , closed PLC will give users a great deal of inconvenience. For example, the need to expand a factory or during use and the introduction of a number of other manufacturers of equipment , PLC because each vendor uses a different means of communication, can not communicate with each other , it will cause the new system is not compatible with the original system . Siemens have noticed several years ago this problem and focus on the promotion of Totally Integrated Automation (TIA) concept , with the PROFIBUS fieldbus technology to facilitate communication with higher performance PLC . Open PLC is inevitable . Judging from the current development of automation , overall system performance is more important in the processing equipment , which makes people pay more attention with the performance PLC and peripheral devices , the protagonist of the status of the PLC has been gradually fading. Effectively carry PLC and peripheral devices communicate , not only for the input , output , analog , etc., also includes servo , scanning and intelligent instruments and so there will be more demand . Now Nanda Power supply module plc users in many applications the choice of the PLC are no longer considered too technical degree , but the question of which brand to choose from. These are important reasons to promote the PLC open. The current situation on the market trend also proved PLC openness . Although the major PLC manufacturers according to their respective surfaces are still ways to promote the production of PLC, but if you observe carefully , all manufacturers have been from a different perspective on the function of the open PLC made improvements . Many types of PLC can communicate using a specific method , the Internet .
But we should also be aware that , although we are in the efforts to open , but may be due to the open deep meaning , so that there is no guarantee that he would dare the PLC is truly open .
2015年3月2日星期一
a brief introduction plc analog output modules in
You say that your sensor with analog output , analog input , (
meaning the module is to convert your voltage or current value to
digital, then you can calculate the slope of the current form of the
temperature or pressure . )
If you are asked to read the temperature or pressure PLC Plc controller manufacturers values , you must sensors with analog outputs and analog outputs. So you buy a simulation module , connect the analog module with PLC, analog output and input sensor is connected with the module ( module wiring diagram of course you do not have to worry about this ) . When the pass on the power after the current value of the module automatically detects the sensor and then convert it to digital, you calculate a formula based on its slope slope table , so you can know the current value of the temperature or pressure .
If so then what is the analog output module output ? Is a need to convert digital or specific value or quantity of modules and digital output is the same as an electric signal ?
The same output is a voltage or current signal wiring PLC Plc logic controllers relationship with you , then the output current is the current line , then the line voltage is the output voltage. Temperature can be equipped with PT100, if needed pressure with pressure transmitter (4-20mA output ) , then select the range to be based on the meter .
What is the analog of the PLC are the same, as long as the project based on the amount of data can be transformed .
In addition , many of the instruments have a communication function or frequency output, which could save an AD module connection is also convenient.
If you are asked to read the temperature or pressure PLC Plc controller manufacturers values , you must sensors with analog outputs and analog outputs. So you buy a simulation module , connect the analog module with PLC, analog output and input sensor is connected with the module ( module wiring diagram of course you do not have to worry about this ) . When the pass on the power after the current value of the module automatically detects the sensor and then convert it to digital, you calculate a formula based on its slope slope table , so you can know the current value of the temperature or pressure .
If so then what is the analog output module output ? Is a need to convert digital or specific value or quantity of modules and digital output is the same as an electric signal ?
The same output is a voltage or current signal wiring PLC Plc logic controllers relationship with you , then the output current is the current line , then the line voltage is the output voltage. Temperature can be equipped with PT100, if needed pressure with pressure transmitter (4-20mA output ) , then select the range to be based on the meter .
What is the analog of the PLC are the same, as long as the project based on the amount of data can be transformed .
In addition , many of the instruments have a communication function or frequency output, which could save an AD module connection is also convenient.
2015年2月19日星期四
plc analog input modules and load power What is the difference
Restart the computer Cause Solution:
1, there may be a BIOS settings problem, restore the default settings into the BIOS or the motherboard battery out, Flip, discharge. Objective: To restore the default settings for the BIOS values, excluding the BIOS default automatic restart or shutdown cooling phenomenon.
2, the restart occurs before the restart occurs if the application software or download software to run the program, then restart the plc controller suppliers software may be caused, in general the program to uninstall and re-install the software, if the fault persists, then the software itself is wrong, you can not to use.
3, anti-virus software in Safe Mode using viruses, troubleshooting if the restart, restart the failure is caused by a virus.
4, boot into safe mode by pressing F8 after the exit in normal mode. Also available system comes with System Restore feature to restore, if the restart troubleshooting, restart the system file damage is caused.
5, if the fault persists, then check the power supply, power quality is poor, aging or power is too small to meet the power needs of the various parts of a computer, high-quality power supply can be replaced, if troubleshooting is to restart the power failure caused.
6, a device restart when hot-plug if the computer going on, according to the first three resolved.
7, then use the process of elimination, check memory, video card, CPU, CPU fan, motherboard, etc.
8, check the memory, memory low quality, poor Nanda industrial automation plc cooling, overclocking, different brands of memory mixed interpolation and CAS setting too low can cause the computer to restart, test method can be used to replace the memory, and memory in the BIOS parameters are adjusted accordingly .
9, check the motherboard, motherboard aging, capacitor failure or exploding, motherboard and chassis backplane can be caused by a short circuit, etc. reboot, you can remove the motherboard from the chassis to inspect or test, then check the CPU heatsink fan base silicone is dry, If dry, the CPU fan on silica gel to clean and re-coated with silicone to good. Then check the CPU fan rotation, and the CPU temperature is normal.
10, cleaning method: a host computer through the Nanda cpu module plc dust components to be cleaned troubleshooting methods. Dust is also caused by one computer to automatically restart failed factors, dust can cause aging of components, pin oxidation, poor contact and short circuit faults. For dust caused by these failures, the general use of more effective cleaning method.
1, there may be a BIOS settings problem, restore the default settings into the BIOS or the motherboard battery out, Flip, discharge. Objective: To restore the default settings for the BIOS values, excluding the BIOS default automatic restart or shutdown cooling phenomenon.
2, the restart occurs before the restart occurs if the application software or download software to run the program, then restart the plc controller suppliers software may be caused, in general the program to uninstall and re-install the software, if the fault persists, then the software itself is wrong, you can not to use.
3, anti-virus software in Safe Mode using viruses, troubleshooting if the restart, restart the failure is caused by a virus.
4, boot into safe mode by pressing F8 after the exit in normal mode. Also available system comes with System Restore feature to restore, if the restart troubleshooting, restart the system file damage is caused.
5, if the fault persists, then check the power supply, power quality is poor, aging or power is too small to meet the power needs of the various parts of a computer, high-quality power supply can be replaced, if troubleshooting is to restart the power failure caused.
6, a device restart when hot-plug if the computer going on, according to the first three resolved.
7, then use the process of elimination, check memory, video card, CPU, CPU fan, motherboard, etc.
8, check the memory, memory low quality, poor Nanda industrial automation plc cooling, overclocking, different brands of memory mixed interpolation and CAS setting too low can cause the computer to restart, test method can be used to replace the memory, and memory in the BIOS parameters are adjusted accordingly .
9, check the motherboard, motherboard aging, capacitor failure or exploding, motherboard and chassis backplane can be caused by a short circuit, etc. reboot, you can remove the motherboard from the chassis to inspect or test, then check the CPU heatsink fan base silicone is dry, If dry, the CPU fan on silica gel to clean and re-coated with silicone to good. Then check the CPU fan rotation, and the CPU temperature is normal.
10, cleaning method: a host computer through the Nanda cpu module plc dust components to be cleaned troubleshooting methods. Dust is also caused by one computer to automatically restart failed factors, dust can cause aging of components, pin oxidation, poor contact and short circuit faults. For dust caused by these failures, the general use of more effective cleaning method.
2015年2月16日星期一
Some problems plc analog output modules in
Upper and lower limits of analog input values are set to 20 and 0 ,
had everything normal, in the absence of the analog signal access , the
software displays a value of 0 , there is signal Nanda plc digital input module access
, they also have a normal display, but under normal use two or three
days , the upper and lower limits remain unchanged, the analog input
value in the absence of wiring is 6.8 , all the channels I have tried
are 6.8 , then the company gave me a new simulation input module ,
installed after the beginning is normal, but it is the same problem in a
couple of days later , I ask an expert what causes ?
Also this PLC as well as a relay output module , 2, 3 and 4-channel connection of solenoid valves, found often there will be Nanda micro smart plc a problem , sometimes when I start solenoid valve, status lights all of a sudden relay output modules are extinguished , the network does not pass , after a minute or so , PLC will automatically linked to the network, the solenoid valve to start this and what is the reason ? I have checked the wiring before , are not the problem
You said power module before Nanda modular plc I checked, input 220V, power module output is 5.09V, I then adjust it to 5.01V, it should be no problem , there is nothing good advice.
Also this PLC as well as a relay output module , 2, 3 and 4-channel connection of solenoid valves, found often there will be Nanda micro smart plc a problem , sometimes when I start solenoid valve, status lights all of a sudden relay output modules are extinguished , the network does not pass , after a minute or so , PLC will automatically linked to the network, the solenoid valve to start this and what is the reason ? I have checked the wiring before , are not the problem
You said power module before Nanda modular plc I checked, input 220V, power module output is 5.09V, I then adjust it to 5.01V, it should be no problem , there is nothing good advice.
2015年2月5日星期四
a brief introduction plc analog output modules in
You say that your sensor with analog output , analog input , (
meaning the module is to convert your voltage or current value to
digital, then you can calculate the slope of the current form of the
temperature or pressure . )
If you are asked to read the temperature or pressure PLC Plc controller manufacturers values , you must sensors with analog outputs and analog outputs. So you buy a simulation module , connect the analog module with PLC, analog output and input sensor is connected with the module ( module wiring diagram of course you do not have to worry about this ) . When the pass on the power after the current value of the module automatically detects the sensor and then convert it to digital, you calculate a formula based on its slope slope table , so you can know the current value of the temperature or pressure .
If so then what is the analog output module output ? Is a need to convert digital or specific value or quantity of modules and digital output is the same as an electric signal ?
The same output is a voltage or current signal wiring PLC Plc logic controllers relationship with you , then the output current is the current line , then the line voltage is the output voltage. Temperature can be equipped with PT100, if needed pressure with pressure transmitter (4-20mA output ) , then select the range to be based on the meter .
What is the analog of the PLC are the same, as long as the project based on the amount of data can be transformed .
In addition , many of the instruments have a communication function or frequency output, which could save an AD module connection is also convenient.
If you are asked to read the temperature or pressure PLC Plc controller manufacturers values , you must sensors with analog outputs and analog outputs. So you buy a simulation module , connect the analog module with PLC, analog output and input sensor is connected with the module ( module wiring diagram of course you do not have to worry about this ) . When the pass on the power after the current value of the module automatically detects the sensor and then convert it to digital, you calculate a formula based on its slope slope table , so you can know the current value of the temperature or pressure .
If so then what is the analog output module output ? Is a need to convert digital or specific value or quantity of modules and digital output is the same as an electric signal ?
The same output is a voltage or current signal wiring PLC Plc logic controllers relationship with you , then the output current is the current line , then the line voltage is the output voltage. Temperature can be equipped with PT100, if needed pressure with pressure transmitter (4-20mA output ) , then select the range to be based on the meter .
What is the analog of the PLC are the same, as long as the project based on the amount of data can be transformed .
In addition , many of the instruments have a communication function or frequency output, which could save an AD module connection is also convenient.
2015年2月2日星期一
PLC analog input modules open forum
PLC is one of the most important factory automation control devices ,
with a wide range of applications in the factory. As technology
advances , PLC has been out of the " logic control ," the simple scope ,
PLC has more analog-digital conversion , digital to analog conversion,
high-speed counting , speed control , position control, axis positioning
control, temperature control, PID control , telecommunications and
high-level language programming and other functions.
Due to historical reasons, the development of technology , the traditional PLC products is still relatively closed . But in the mutual PLC Programmable Logic Controller exchange of information on real-time , deepening liquidity requirements today , PLC control to continue to adapt to the needs of the plant , openness trend has become increasingly evident. With the continuous opening of the PLC , which has a much richer functionality . This month we will be more open to discuss the development of PLC functions .
Open open trend has emerged PLC is inevitable , closed PLC will give users a great deal of inconvenience. For example, the need to expand a factory or during use and the introduction of a number of other manufacturers of equipment , PLC because each vendor uses a different means of communication, can not communicate with each other , it will cause the new system is not compatible with the original system . Siemens have noticed several years ago this problem and focus on the promotion of Totally Integrated Automation (TIA) concept , with the PROFIBUS fieldbus technology to facilitate communication with higher performance PLC . Open PLC is inevitable . Judging from the current development of automation , overall system performance is more important in the processing equipment , which makes people pay more attention with the performance PLC and peripheral devices , the protagonist of the status of the PLC has been gradually fading. Effectively carry PLC and peripheral devices communicate , not only for the input , output , analog , etc., also includes servo , scanning and intelligent instruments and so there will be more demand . Now Nanda Power supply module plc users in many applications the choice of the PLC are no longer considered too technical degree , but the question of which brand to choose from. These are important reasons to promote the PLC open. The current situation on the market trend also proved PLC openness . Although the major PLC manufacturers according to their respective surfaces are still ways to promote the production of PLC, but if you observe carefully , all manufacturers have been from a different perspective on the function of the open PLC made improvements . Many types of PLC can communicate using a specific method , the Internet .
But we should also be aware that , although we are in the efforts to open , but may be due to the open deep meaning , so that there is no guarantee that he would dare the PLC is truly open .
Due to historical reasons, the development of technology , the traditional PLC products is still relatively closed . But in the mutual PLC Programmable Logic Controller exchange of information on real-time , deepening liquidity requirements today , PLC control to continue to adapt to the needs of the plant , openness trend has become increasingly evident. With the continuous opening of the PLC , which has a much richer functionality . This month we will be more open to discuss the development of PLC functions .
Open open trend has emerged PLC is inevitable , closed PLC will give users a great deal of inconvenience. For example, the need to expand a factory or during use and the introduction of a number of other manufacturers of equipment , PLC because each vendor uses a different means of communication, can not communicate with each other , it will cause the new system is not compatible with the original system . Siemens have noticed several years ago this problem and focus on the promotion of Totally Integrated Automation (TIA) concept , with the PROFIBUS fieldbus technology to facilitate communication with higher performance PLC . Open PLC is inevitable . Judging from the current development of automation , overall system performance is more important in the processing equipment , which makes people pay more attention with the performance PLC and peripheral devices , the protagonist of the status of the PLC has been gradually fading. Effectively carry PLC and peripheral devices communicate , not only for the input , output , analog , etc., also includes servo , scanning and intelligent instruments and so there will be more demand . Now Nanda Power supply module plc users in many applications the choice of the PLC are no longer considered too technical degree , but the question of which brand to choose from. These are important reasons to promote the PLC open. The current situation on the market trend also proved PLC openness . Although the major PLC manufacturers according to their respective surfaces are still ways to promote the production of PLC, but if you observe carefully , all manufacturers have been from a different perspective on the function of the open PLC made improvements . Many types of PLC can communicate using a specific method , the Internet .
But we should also be aware that , although we are in the efforts to open , but may be due to the open deep meaning , so that there is no guarantee that he would dare the PLC is truly open .
2014年12月8日星期一
Analog Output Module
DAM-3713 Product Code: 960326600
4 plc analog output module
※ Mitsubishi LINK RS-485 communication, support a variety of configuration software
※ output range: 0 ~ 20mA, 4 ~ 20mA
※ Resolution: 12
※ Accuracy: ± 2 ‰
※ communication rate: 600 ~ 115200bps optional
※ plc output module isolation protection, communication port optical isolation
※ Built-in watchdog
4 plc analog output module
※ Mitsubishi LINK RS-485 communication, support a variety of configuration software
※ output range: 0 ~ 20mA, 4 ~ 20mA
※ Resolution: 12
※ Accuracy: ± 2 ‰
※ communication rate: 600 ~ 115200bps optional
※ plc output module isolation protection, communication port optical isolation
※ Built-in watchdog
2014年3月13日星期四
plc analog io modules in particular often photoelectric sensor controller
① long distance detection reservations on the radio if the detection distance of more than 10m , etc., will be able to implement other detection methods ( magnetic , ultrasonic , etc. ) can not be away from the test. Achieve long- distance
② Due to restrictions on the detection plc controller suppliers of objects to detect object shading and reflection caused by the detection principle , it is not like the proximity sensor will detect metal objects is limited , it can be almost any object glass plastic timber . Liquids for testing.
③ short response time for the speed of light itself , and the sensor circuit constituted by the electronic parts , it does not contain mechanical working time , the response time is very short.
④ resolution through advanced design technology to intelligent plc cast light beam focused in a small spot , or by forming a special light-receiving optical system to achieve high resolution . Detecting small objects can be detected and the position detection precision can be achieved in non-contact ⑤
Without mechanical contact can detect objects realize detection, and therefore will not cause damage to detect objects and sensors. Therefore , long-term use sensor . ⑥ color discrimination can be achieved
Reflectivity and absorption of light by detecting Nanda programmable controller objects formed in accordance with the color of the light wavelength of light being cast and testing combinations of objects vary . Using this nature , the object can be detected color detection ⑦ easy to adjust
In visible light projection type , cast light beam is visible to the eye , easy to adjust the position of the object detected .
② Due to restrictions on the detection plc controller suppliers of objects to detect object shading and reflection caused by the detection principle , it is not like the proximity sensor will detect metal objects is limited , it can be almost any object glass plastic timber . Liquids for testing.
③ short response time for the speed of light itself , and the sensor circuit constituted by the electronic parts , it does not contain mechanical working time , the response time is very short.
④ resolution through advanced design technology to intelligent plc cast light beam focused in a small spot , or by forming a special light-receiving optical system to achieve high resolution . Detecting small objects can be detected and the position detection precision can be achieved in non-contact ⑤
Without mechanical contact can detect objects realize detection, and therefore will not cause damage to detect objects and sensors. Therefore , long-term use sensor . ⑥ color discrimination can be achieved
Reflectivity and absorption of light by detecting Nanda programmable controller objects formed in accordance with the color of the light wavelength of light being cast and testing combinations of objects vary . Using this nature , the object can be detected color detection ⑦ easy to adjust
In visible light projection type , cast light beam is visible to the eye , easy to adjust the position of the object detected .
2014年3月11日星期二
plc analog input modules of software or hardware reason for the crash analysis
Programmable Logic Controller PLC runtime situation may occur crash , which caused unpredictable losses to industrial Nanda intelligent plc production, and therefore , we must first understand the cause of the crash PLC , for reasons of investigation, software or hardware errors are likely to cause crashes PLC , the following were introduced :
1 , hardware (1) I / O channeling electrical , PLC automatically detect I / O errors , enter STOP mode. (2) I / O is damaged, the program proceeds to the needs of the I / O feedback signal , the instruction is Nanda programmable logic control plc not executed down . ( 3 ) expansion module ( function type, such as A / D) line interference or open circuit . ( 4 ) power supply portion interference or failure. ( 5 ) PLC connection module and address allocation failed module out so ( 6 ) cable caused . 2 , software ( 1 ) trigger an infinite loop . ( 2 ) the program changed the contents of the system parameters area , but no initialization section. ( 3 ) protection Nanda logic controller program starts : hardware protection , restrict the use of time ( for loan recovery ) 4 ) Data overflow step is too large, the watchdog ( can be modified DOG time ) action.
1 , hardware (1) I / O channeling electrical , PLC automatically detect I / O errors , enter STOP mode. (2) I / O is damaged, the program proceeds to the needs of the I / O feedback signal , the instruction is Nanda programmable logic control plc not executed down . ( 3 ) expansion module ( function type, such as A / D) line interference or open circuit . ( 4 ) power supply portion interference or failure. ( 5 ) PLC connection module and address allocation failed module out so ( 6 ) cable caused . 2 , software ( 1 ) trigger an infinite loop . ( 2 ) the program changed the contents of the system parameters area , but no initialization section. ( 3 ) protection Nanda logic controller program starts : hardware protection , restrict the use of time ( for loan recovery ) 4 ) Data overflow step is too large, the watchdog ( can be modified DOG time ) action.
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