Omron CPM1 communication 1

[cesarm]

My laptop has not a serial port, it only has two USB ports. How can I connect my computer with PLC?. The PLC is a OMRON CPM1-20CDR-A.

 

[JayAnthony]

You need a USB to Serial convertor. Omron makes one - CS1W-CIF31. Many other manufacturers make one.

Jay in Dallas
Visit the Omron Forum at MrPLC.com
Omron Forum @ MrPLC.com

 

[cesarm]

Well Jay, I`m using Syswin 3.4, how should I set the communication port?

 

[JayAnthony]

I thought the issue was not having a serial port on your computer.......If you get a USB to serial convertor, you will need to use COM1 thru COM4 at 9600,E,7,2.

Jay in Dallas
Visit the Omron Forum at MrPLC.com
Omron Forum @ MrPLC.com

 

[eriond]

I had the same issue, but the PC was assigning COM 1-4 automatically. I didn't know of a way to "reserve" those com port designations, so I ended up swapping the laptop for one with a serial port. As well as now having an unused USB to serial converter. Ain't this a FUN field to work in?

 

[OldPfart]

You can allocate a com port number in device manager. Open the com port properties and set it up in resources, untick use automatic settings. You may have to restart your computer.

USB to serial converters can be a pain but a lot depends on your computer hardware. I have an HP and a lot of converters do not work properly. The Omron one does.

If you have RSLinks, make sure you set it up to start as a service. It plays merry hell with lots of software. If you have used it, restart your computer before using anything else.

Some software will also grab an internal modem as a com port. Disable the internal modem and all is well.