PLC Serial Communication

T

Thread Starter

Tomas

Basically, I am programming a PLC that is attached to a series of limit switches and as part of the interrupt service routine in Step 7 I
want to write out from the PLC to the PC serial port a particular string value depending on the limit switch triggered. The serial port is
being polled by a separate program in MATLAB to look for these string values.
 
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Dobrowolski, Jacek

Hi,

To write from S7 plc to PC serial port you need appropriate CP (communication processor).

Regards,

Jacek Dobrowolski, M. Sc. E. Eng.
Software Eng.
 
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Aquilino Rodriguez

Hi:

To communicate with a PC working RS232, you need the interface card CP340 (possibilities: RS232C, 20mA, RS422/485, ASCII, 3964, Printer drivers)

Regards

Aquilino Rodriguez
Festo Spain
 
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