Googs91

Now that makes a lot of sense. Just picked up an adapter. I will give that a shot. 

  this is the one I am using.

Ok I will try that. I have no problem connecting over DH485.

I need to pin out my DB9 cable to make sure its a null modem cable. Im not 100% sure its a null modem cable.

I have tried over and over again trying to connect to the rs232 port with no success. I have attached the channel config.

Ok I have beat my head against the wall for long enough trying to research this. Im running a AB SLC5/03 and a HMI from Parker P11 The PLC and HMI are communicating on DH485. The communication cable is a RJ45 to the PLC and a DB9 Female at the HMI. Problem im having is I need to communicate with the plc with out disconnecting the HMI. The RS232 port on the PLC seems to have an issue with communication. is it possible to run a switch or hub between the PLC and HMI so I can plug my 1747UIC RJ45 plug into the switch or hub and be able to communicate with the PLC?   Any help would be much appreciated.