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 .
没有评论:
发表评论