Easy Electronics xLogic Micro PLC User Manual page 41

1. Programming port/RS232 port(ELC-RS232 ,ELC-USB,ELC-Copier should be inserted in this port)
When the programming port should be used as the standard RS232 port (D-shape 9 pin header) ,the
ELC-RS232 cable needed.Blow is show you the pin definition of the header:
2. Expansion port/RS485
3------RS485 A
5------RS485 B
4------GND
6------GND
7------CANL
9------CANH
15------+5V
16------+5V
Communication between CPU and expansion module will use 4.7,9,15 pin.
ELC-RS485 module need when ELC-18 CPU communicate with the third party devices via RS485 bus
ELC-12 CPUs
1. Programming port/RS232 port(ELC-RS232 ,ELC-USB,ELC-Copier should be inserted in this port)
41
( pin definition)
PIN function
2 RXD
3 TXD
5 GND
others NULL