xLadder user manual-V2.0.0.6

3.4.3 Communication port instructions: PR-14,PR-18 ,PR-24 CPUs

1.Programming port/RS232 port (RS232 cable ,USB cable, ELC-MEMORY,

ELC-BATTERY,PRO-RS485) should be inserted in this port.

When the programming port should be used as the standard RS232 port

(D-shape 9 pin header) ,the RS232 cable is needed.Blow is show you the

pin definition of the pin:

PIN functi on 2 RXD 3 TXD 5 GND others NULL

1. Expansion port/RS485 ( pin definition)

3------RS485 5------RS485 B

A

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