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OMRON CPM1 connection

OMRON CPM1 connection

I need download a program installed in a OMRON CPM1 PLC, I wanna now how connect my PC with OMRON CPM1-CIF01 serial interface.

RE: OMRON CPM1 connection

It´s well, but i need to connect a CPM1 CPU with my PC through a RS-232c adapter. I wanna now the pin out for the connector in both sides of the serial cable.



RE: OMRON CPM1 connection

The connector on the CPM1 is not RS232C level signals. Instead, it is TTL level signals.  You need a CPM1-CIF01 adapter and then the serial cables in the post above will work.

Jay in Dallas
Visit the Omron Forum at
Omron Forum @

RE: OMRON CPM1 connection

Jay, he mentions that he has a CIF. Therefore he should only have to build a cable.

cesarm, please confirm that you have a CPM1-CIF01. If you have, then you build a cable from the cables at the link, use ether Syswin or CX-Programmer (recommended), set up communications and away you go.

RE: OMRON CPM1 connection

Yes, OldPfart, I´m using a CPM1-CIF01 and SYSWIN programming software too. I have tried to connect and download the program but SYSWIN warning me that there is not response of PLC.

RE: OMRON CPM1 connection

You need to check your cable and the comms settings in Syswin. You can also change the comms rate. I have set quite a few PLCs i=on projects to 19.2 kbaud. If Syswin is set at 9.6 kbaud, no comms will take place.

If you can get a copy of X-Programmer, it has a PLC "auto search" function. Makes life much easier. Will detect the PLC and give you the comms settings.

RE: OMRON CPM1 connection

OldPfart, How can I get a copy of X-Programmer?

RE: OMRON CPM1 connection

Buy it from your local Omron distributor.

RE: OMRON CPM1 connection

By X-Programmer I think you find more luck looking for CX-Programmer. this is the latest Omron software and is good to use, not that syswin was bad.

One thought I have installed a few laptops with PLC software. Sometimes the internal achitecture of the laptop means that COM1 is the internal modem and the COM port on the laptop is COM2.

RE: OMRON CPM1 connection

Another trick is to disable the internal modem or the program sometimes will not pick up the com port but the modem instead. Depends on the laptop and the OS.

Yep. CX-Programmer is great to use, particularly V4.03.

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