Panelview

Does anyone know the difference between an RS 232(DH 485) port and an RS 232(DF 1) port.

As mentioned befor I am having trouble connecting my Panelview 550 to a 1761-NET-AIC.

The panelview model I have is the 2711-k5ak, rs 232(dh 485) port.

Does the DH 485 designation mean that it is running DH 485 protocol. If so, why does the cable plug into the 8 pin mini serial port on the AIC.

I have been reading other posts concerning the Panelview 550 and I think I am going to try and change the firmware so the port operates with the DF1 protocol.

I just don't want to do this if I don't have to. This configuration of the comm port is confusing me...Why have a RS 232 port configured for DH 485....how would that connect to a 1761-NET-AIC?

I think you need cable 2706-NC13















Read this also: http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1761-um004_-en-p.pdf