IS200JPDMG1A
IS200JPDMG1A
IS200JPDMG1A
PLC unit failure, have to stop the whole system, can be replaced and maintenance and need to be reprogrammed. So the DCS system than its safety and reliability on a higher level.
6. System software, the various process control scheme update is one of the most basic functions of DCS, when a scheme changes, the engineer only need to change the scheme compiled in the engineer station, execute the lower command can, the lower process is automatically completed by the system, does not affect the original control scheme operation. All kinds of control software and algorithms can improve the control precision of process control object. For in the composition of PLC system, very large workload, you first need to determine which is to edit update by PLC, and then to use the program
compiled with the matching compiler, final reoccupy special machine (read-write) special one-on-one to send the PLC program, during the system debugging, and debugging cost a huge increase in debugging time, And extremely detrimental to future maintenance. The control accuracy is far from the same. This determines why in large and medium-sized control projects (more than 500 points), basically do not use all the PLC connected to the system.
7. Module: All I/O modules of DCS system
