Communications and industrial control software? Such as PLC

CodePudding user response:

Need to know the equipment of the communication protocol

CodePudding user response:

And PLC communication generally have only two physical way: a serial port (485, 232), so
More important is communication protocols, some protocols can direct communication with PLC, middle don't need to add the protocol conversion module, for example: the Modbus, custom protocol,
In the middle of the communication and the need to join protocol conversion module, Siemens's PLC, for example, it has a Profibus dp and Profinet protocol, the former is 485 communication, which is the Ethernet communication, and the Control net communication, the three kinds of communication mode, then use "protocol conversion module, they can generally will PLC for undisclosed agreement, converted to open the Modbus protocol, and protocol conversion module, and then the upper machine with Modbus communication is ok

CodePudding user response:

=industrial control PC + signal control card + + specific equipment.
Metaphor is PLC computer PLC control card output PLC to control the PLC equipment
Programming of the part is PC to control a variety of control card to command control card for specific actions you understand this just know what call industrial control.
PC programming can be said to be relatively simple part of the system.