GP2401H to Omron CJ2H

[amccaffe]

Hello All,

I am trying to get an older GP2401H (Proface HMI) to communicate with a newer CJ2H (Omron PLC).  

Everything I tried has failed.  I think my problem is on the PLC side.  

Below are the details...

...Proface...

GP2401H-TC41-24V

GP-PRO/PB3 for Windows

...Omron PLC...

CJ2H-CPU66-EIP

 

Need to use the serial port on the CJ2H because the GP is only serial (RS232).

 

Thanks for checking this out and please let me know what you think.  

 

 

 

[BobB]

Omron RS232 ports are not standard - check the wiring. Also make sure the Proface has the right driver.

[amccaffe]

Here is the wiring diagram I used...

 I'm starting to think my problem is the drivers.  The older Proface does not have a driver for the CJ2 series PLC, only the CJ1.  

I used the driver for the CJ1 with the hope it would also work with the CJ2.  No luck.  

There must be a difference between protocols used be the CJ2 versus the CJ1 PLCs.    

[Michael Walsh]

The CJ1 protocol should mostly work.  Is it a Host Link driver?  It is necessary that you set the port up to match the settings coming from the HMI.  There are also a dip switch that needs to be set correctly that specifies whether the port is using the default config or one that is set by the user.