Direct Logic Plcs Rs-422A/Rs-485A; Allen-Bradley; Ge, Mitsubishi, Omron, Modicon And Siemens - C-more micro EA1-S6ML Hardware User Manual

PLC Compatibility and Connection Charts (cont'd)

Direct LOGIC PLCs RS-422A/RS-485A:

When using the RS-422A/RS-485A communications capabilities of the C-more Micro-Graphic
Serial Port (Port 2), the termination resistor is placed between the RXD– and RXD+ terminals
on the PLC side of the connection between the touch panel and PLC. The Termination Resistor
value is based on the characteristic impedance of the cable being used. To enable the built-in
120 Ohm Termination Resistor, jumper pin 13 (termination resistor) to pin 9 (RXD+) on the
C-more 15-pin PLC communications port.

Allen-Bradley:

As stated in this chapter's introduction, the panel also has the ability to communicate with
Allen-Bradley PLCs that support the Allen-Bradley DF1 and DH485 protocols. The chart for
the various Allen-Bradley PLCs includes recommended cables.

GE, Mitsubishi, Omron, Modicon and Siemens:

Other 3rd party PLCs can be used with the C-more Micro-Graphic panel. These PLCs are listed
in a chart and various wiring diagrams are shown to allow connectivity.
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EA1-MG6-USER-M Hardware User Manual, 1st Ed. Rev C, 09/10
Chapter 6: PLC Communications
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