At present, the development of embedded PLC is also diversified , domestic core a few years ago there Huazhong Science and Technology chipset embedded PLC system software is loaded , as the hardware platform , the plc input output modules development of multi-mode embedded PLC into the channel ; there is a development path is the development of PLC and HMI combination of hardware / software integration for the target platform , taking advantage of CASE tools, combined with various types of embedded chip development platform and a variety of input / output channel hardware circuit libraries, designed for electrical and mechanical equipment developed customized, ODM nature has dedicated PLC.
Embedded PLC has a broader space for development in our country , plc analog output modules first is that it is very beneficial to the development of China's two major characteristics play automation plc modular industry : There is a very strong market for the electrical and mechanical equipment for the foundation , and has enough value for money the world's best design and development team . We can at the lowest cost , high quality, according to custom requirements of the design , production and electromechanical equipment for embedded PLC, instead of the generic PLC. Meanwhile, the various aspects of functional embedded PLC hardware , software, human-machine interface , communications, design flexible, easy to cut , closer to the requirements of modular plc various grades of electrical and mechanical equipment . Embedded PLC technology based entirely on the basis of embedded systems can be used with . SoC chip , embedded operating systems and programming languages according to IEC 61131-3 standard programming environment and other advantages, making it very easy to find on the market
plc
2014年3月31日星期一
2014年3月30日星期日
The analog input module is configured to output module plc precautions when
First, we must get to know what is the "two-wire current signal" input, what is the "four-wire current signal" input. Simply put: When the sensor comes with power supply, transport a 0 ~ 20mA or 4 ~ 20mA current loop signal through two current signal line out without PLC via analog interfaces to plc temperature control module provide 24VDC power supply module, the We call it "four-wire current signal." At this point, output module plc should the current loop input analog signal on the channel configuration is 4DU (4 ~ 20mA), the analog input module configured to span the card position [C] when the sensor itself, without power supply, you need to PLC analog input module to provide external power supply 24VDC when we called "two-wire current signal." Under the "two-wire current signal" configuration, analog input module current and voltage signals are shared two lines. In this case, the plc modular current loop input analog signal on the channel configuration is 2DU (4 ~ 20mA), the analog input module configured to span the card position [D], as shown above: The above two configurations, the actual do not be mistaken in!
If configuration errors, such as the "active" four-wire current input signal is mistakenly configured as "passive" two-wire current input signal, the analog signal input interface PLC will withstand external 24VDC input current signal is brought power supply, which can easily lead to plc logic controller burnout PLC analog input module! ! ! In practical applications, to be careful, pay attention to the difference between them
If configuration errors, such as the "active" four-wire current input signal is mistakenly configured as "passive" two-wire current input signal, the analog signal input interface PLC will withstand external 24VDC input current signal is brought power supply, which can easily lead to plc logic controller burnout PLC analog input module! ! ! In practical applications, to be careful, pay attention to the difference between them
2014年3月28日星期五
Some simple introduction plc analog input modules for
In our application of PLC, covering almost all brands of the world, showing the plc analog io module trend of the Boxer Rebellion, but the industry points, have their own sphere of influence. Medium and large centralized control system uses PLC mostly small control systems, machine tools, equipment automation and OEM products monomer used in Japan PLC majority. plc analog input modulesPLC has advantages in networking and software, and PLC in terms of flexibility and price advantage. Our PLC supply channels, mainly manufacturers, distributors (dealers), system integrators, OEM users, the end user. Among them, the most PLC is to reach end users through distributors and systems integrators.
Siemens in the Chinese market, the Chinese market is a traditional supplier plc cpu modules of accounting had opportunities in many areas, the corresponding LG Schneider and although these fast-growing market newcomers, but there is still a gap distance pioneer. Some brands will focus on a number of industries, such as Schneider pay more attention to the power industry, metallurgical industry, Rockwell outstanding performance. In addition, domestic PLC brand plc module developed quickly, and captured a certain market share.
Siemens in the Chinese market, the Chinese market is a traditional supplier plc cpu modules of accounting had opportunities in many areas, the corresponding LG Schneider and although these fast-growing market newcomers, but there is still a gap distance pioneer. Some brands will focus on a number of industries, such as Schneider pay more attention to the power industry, metallurgical industry, Rockwell outstanding performance. In addition, domestic PLC brand plc module developed quickly, and captured a certain market share.
plc analog input modules leveraging some of the industry's role in the Internet of Things
Development and construction of things to cover broader, PLC as the analog output module current information collection, control of the main technical means, is bound to play a key role in the construction of things.
PLC is a major part of which is composed of automation equipment, industrial automation production with industrial Ethernet applications more widely, the production process but also the development of network information technology trends, PLC or by the large-scale application of networking technology of the machine again quickly development.
From the two-dimensional code spread to "smart city" landing, as were high hopes of emerging industries, four things are flowering, quietly affecting people's lives. Industry experts believe that things can plc digital input output module improve economic efficiency on the one hand, significant cost savings; hand to provide technical momentum to global economic recovery. Currently, the U.S., the EU invested so heavily in-depth study to explore things. China is also highly concerned about the emphasis on research, the Ministry of Industry and Information Technology of Things will work with relevant departments to carry out research on a new generation of information technology, to form a new generation of policy measures to support the development of information technology. In the course of development of control technology, with computer technology, control technology, digital technology, communications technology and other high-tech network of closely related. Formal various plc cpu modules emerging technologies, and promote the development of the programmable controller. Let PLC programmable controller to replace relay logic control become mainstream control technology. The basic mechanism of a power PLC, a central processing unit (CPU), memory, input and output circuits excuse functional module, communication module components. It works by the scanning technology implementation phase, the user program, the output refresh period of three parts.
PLC is a major part of which is composed of automation equipment, industrial automation production with industrial Ethernet applications more widely, the production process but also the development of network information technology trends, PLC or by the large-scale application of networking technology of the machine again quickly development.
From the two-dimensional code spread to "smart city" landing, as were high hopes of emerging industries, four things are flowering, quietly affecting people's lives. Industry experts believe that things can plc digital input output module improve economic efficiency on the one hand, significant cost savings; hand to provide technical momentum to global economic recovery. Currently, the U.S., the EU invested so heavily in-depth study to explore things. China is also highly concerned about the emphasis on research, the Ministry of Industry and Information Technology of Things will work with relevant departments to carry out research on a new generation of information technology, to form a new generation of policy measures to support the development of information technology. In the course of development of control technology, with computer technology, control technology, digital technology, communications technology and other high-tech network of closely related. Formal various plc cpu modules emerging technologies, and promote the development of the programmable controller. Let PLC programmable controller to replace relay logic control become mainstream control technology. The basic mechanism of a power PLC, a central processing unit (CPU), memory, input and output circuits excuse functional module, communication module components. It works by the scanning technology implementation phase, the user program, the output refresh period of three parts.
In plc analog input modules to control the role played
Power systems using conventional crane relay - contactor control, but this control system has some drawbacks:
The first day, the need for a large number of loading and unloading plc programmable logic controller operations, switching frequency, in the current state of the larger, easy to burn contacts; Second, poor reliability, complex operation, failure rate, energy waste and inefficiency.
Third, in order to adapt to the working conditions of crane, crane operator frequent repeated handling, high-current electrical components always in working condition, reducing the life of the electrical components and motors.
Fourth, the coordination of the work depends mainly on the crane operator's proficiency. When the crane operator labor intensity of work is relatively large, easy fatigue, prone to misuse.
Solve these problems, only to completely change the traditional control plc power supply module methods fundamentally. In recent years, with the rapid development of computer technology and power electronics, electric drive and automatic control field is also changing. Among them, a representative of the PLC to obtain a wide range of applications in the crane control system provides favorable conditions.
In the PLC-controlled crane ready to set the speed according to the scene at work, time and deceleration time upshift; improve work efficiency, more accurate positioning; energy-saving effect is obvious, saving rate of 35%; gear, Motor shock, low failure rate, easy to maintain, greatly reducing maintenance role; improve the reliability and modular plc safety of traffic, extending the life of the crane.
The first day, the need for a large number of loading and unloading plc programmable logic controller operations, switching frequency, in the current state of the larger, easy to burn contacts; Second, poor reliability, complex operation, failure rate, energy waste and inefficiency.
Third, in order to adapt to the working conditions of crane, crane operator frequent repeated handling, high-current electrical components always in working condition, reducing the life of the electrical components and motors.
Fourth, the coordination of the work depends mainly on the crane operator's proficiency. When the crane operator labor intensity of work is relatively large, easy fatigue, prone to misuse.
Solve these problems, only to completely change the traditional control plc power supply module methods fundamentally. In recent years, with the rapid development of computer technology and power electronics, electric drive and automatic control field is also changing. Among them, a representative of the PLC to obtain a wide range of applications in the crane control system provides favorable conditions.
In the PLC-controlled crane ready to set the speed according to the scene at work, time and deceleration time upshift; improve work efficiency, more accurate positioning; energy-saving effect is obvious, saving rate of 35%; gear, Motor shock, low failure rate, easy to maintain, greatly reducing maintenance role; improve the reliability and modular plc safety of traffic, extending the life of the crane.
2014年3月27日星期四
plc analog input modules, What is a switch? What is Analog
Switch only two opposite working condition, such as high and low, the relay coil is energized and off, on and off an electric shock, plc analog input output io modulebe directly input and output switch signal. Some PLC (eg Siemens S7 series) will be called a digital switch. analog is continuously changing quantities such as voltage, temperature, pressure and speed, such as PLC, does not deal directly with analog, you need to enter the module a / D converter with analog unit, the analog to digitalconverter is proportional plc digital input output io moduleto the input signal. PLC in digital (such as the output of the PID controller) with analog output module requires the D / A converter to convert them into the corresponding figure proportional voltage or current for external actuators (such as electric control valve or drive) to use.
2014年3月21日星期五
situation plc cpu modules plc rapid development in the international grim
The degree of automation of industrial enterprises is generally low, such as machinery industry for more than 80% of the programmable logic controller equipment is still using the traditional relay and contactor control. After joining wto Copyright Control Engineering, China is becoming the world's new manufacturing base, mainly in manufacturing control logic control-oriented, a lot of automated transformation of traditional industries also provide a broad space for development plc applications. = Rapid growth of China's manufacturing growth rates in some sectors even reach 20%. Over the next five years, the annual growth rate China plc market is expected to reach 14.1%. 2003 this market was $ 370 million.
Due to various reasons, the domestic brands in the plc analog input output module domestic plc plc small proportion of the market share, has not formed industrial scale, China is now on the market for more than 95% of the plc products from foreign companies. From a technical perspective, small plc is narrowing the gap between home and abroad. Decades of international manufacturers face large-scale production and marketing management experience Copyright Control Engineering, the majority of domestic manufacturers and only stay in small batches to maintain the survival of infancy, from plc input output modules the real mass market operations as well as to create a brand as well as a long way to go.
Due to various reasons, the domestic brands in the plc analog input output module domestic plc plc small proportion of the market share, has not formed industrial scale, China is now on the market for more than 95% of the plc products from foreign companies. From a technical perspective, small plc is narrowing the gap between home and abroad. Decades of international manufacturers face large-scale production and marketing management experience Copyright Control Engineering, the majority of domestic manufacturers and only stay in small batches to maintain the survival of infancy, from plc input output modules the real mass market operations as well as to create a brand as well as a long way to go.
2014年3月19日星期三
Some applications plc analog input modules feature
( 1 ) for such a huge market , China should focus on financial and technical strength , develop and produce a series of plc controller manufacturers proprietary products as soon as possible plc , plc technology is from closed to open , it uses a lot of technology , common hardware , software standardization, makes plc design and production of technical barriers no longer exist . In recent years, coupled with the rapid development of chip technology , the introduction of products with international competitiveness plc has become possible. Domestic manufacturers should come together to form plc group of companies , the establishment of specialized Nanda cpu modules plc research institutions to jointly develop a variety of mechanical and electrical products , such as: inverters, servo systems, man-machine interface , greatly improve product reliability , compatibility, establish a sound sales network and service system , the courage to compete on the international stage with the multinationals , the only way to gain a foothold in the domestic product plc automation industry in China market . In expanding the scope of application plc , while in software integration efforts on . For different industrial processes , with its own distinctive form of system integration software , HMI software and application software. In the development of small plc products , you must select an appropriate balance between integration , functionality , applicability , economy , etc., designed to meet the different requirements of users of the product . Small plc will continue to be the market mainstream products , small plc is most likely the first to achieve localization , according to the characteristics of China's current economic plc input output modules development , small plc localization is the trend. Based on the domestic market , the domestic plc manufacturer can quickly provide users personalized products tailored according to the specific needs of the user . The Chinese users multinationals difficult to rapid feedback to the special needs of foreign plc contributed to the rapid improvement of the manufacturer of the product.
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.
2014年3月10日星期一
Some analysts plc analog output modules in
Is the A / D module, right, and his function is to 4-20MA current signal
into digital, his task is complete, as the data also needs to become a PLC
program processing, computing, or does not make sense. Because of the PLC
CPU unit can not directly accept a current or plc controller suppliers voltage signal, a digital
signal only recognize him, that the data in the PLC in full is the
existence of a binary 0 or 1, and A / D module is a bridge, is responsible
for the conversion. However, after the conversion Nanda micro smart plc procedures also need to
become data you need. That unit is to grab the CPU A / D in the data
module to process, after the program operation to get useful data, this
data may be temperature, weight, pressure, and finally displayed on the
touch screen, the touch screen has a generally driver, which has the PLC
channel, you make a connection can be a variable, since the touch screen
itself is also quite a drive axle, PLC where each state corresponds touch
point in the channel, where the variables corresponding to the touch the
channel, an association can then collect the data. If you use a computer,
using VB, VC and other programming will all Nanda cpu module plc develop their own drive this
one, and this thing may become significant. This is the point with the
touch screen is good, do not have to write this newsletter, directly on
the line.
into digital, his task is complete, as the data also needs to become a PLC
program processing, computing, or does not make sense. Because of the PLC
CPU unit can not directly accept a current or plc controller suppliers voltage signal, a digital
signal only recognize him, that the data in the PLC in full is the
existence of a binary 0 or 1, and A / D module is a bridge, is responsible
for the conversion. However, after the conversion Nanda micro smart plc procedures also need to
become data you need. That unit is to grab the CPU A / D in the data
module to process, after the program operation to get useful data, this
data may be temperature, weight, pressure, and finally displayed on the
touch screen, the touch screen has a generally driver, which has the PLC
channel, you make a connection can be a variable, since the touch screen
itself is also quite a drive axle, PLC where each state corresponds touch
point in the channel, where the variables corresponding to the touch the
channel, an association can then collect the data. If you use a computer,
using VB, VC and other programming will all Nanda cpu module plc develop their own drive this
one, and this thing may become significant. This is the point with the
touch screen is good, do not have to write this newsletter, directly on
the line.
2014年3月5日星期三
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.
2014年3月3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.
2014年3月2日星期日
plc analog io modules leveraging the rapid growth of the Internet of Things
The past two years by the domestic economic slowdown, sluggish economic recovery abroad, the market size of the PLC showed a sharp downward trend. Things develop guidance and related documents formally introduced this year, driven by the Internet of Things and smart grid, PLC industry will Nanda PLC programmable logic controller plc rebound and achieve rapid growth.
Development and construction of things to cover broader, PLC as the current information collection, control of the main technical means, is bound to play a key role in the construction of things. PLC is a major part of which is composed of automation equipment, industrial automation Nanda PLC micro smart plc production with industrial Ethernet applications more widely, the production process but also the development of network information technology trends, PLC or by the large-scale application of networking technology of the machine again quickly development. In the course of development of control technology, with computer technology, control technology, digital technology, communications technology and other high-tech network of closely related. Formal various Nanda PLC high-speed counter modules emerging technologies, and promote the development of the programmable controller. Let PLC programmable controller to replace relay logic control become mainstream control technology. The basic mechanism of a power PLC, a central processing unit (CPU), memory, input and output circuits excuse functional module, communication module components. It works by the scanning technology implementation phase, the user program, the output refresh period of three parts.
Development and construction of things to cover broader, PLC as the current information collection, control of the main technical means, is bound to play a key role in the construction of things. PLC is a major part of which is composed of automation equipment, industrial automation Nanda PLC micro smart plc production with industrial Ethernet applications more widely, the production process but also the development of network information technology trends, PLC or by the large-scale application of networking technology of the machine again quickly development. In the course of development of control technology, with computer technology, control technology, digital technology, communications technology and other high-tech network of closely related. Formal various Nanda PLC high-speed counter modules emerging technologies, and promote the development of the programmable controller. Let PLC programmable controller to replace relay logic control become mainstream control technology. The basic mechanism of a power PLC, a central processing unit (CPU), memory, input and output circuits excuse functional module, communication module components. It works by the scanning technology implementation phase, the user program, the output refresh period of three parts.
订阅：
博文 (Atom)