CGU 04i DESCRIPTION
14
2.7.2 PORT2 connectors
On demand of the client it is possible mounting second interface. The second interface
may be RS232, RS422, RS485, M-BUSD or CNT. If PORT2 isn't mounted, connector will not
active.
2.7.3 Connector PORT2 - RS485
Panel socket RJ45
Pin
number
Signal
mark
Description
Direction
1
GND
Signal and supply ground
2
GND
Signal and supply ground
3
TxRx-
RS485 B (-)
Input/Output
4
TxRx+
RS485 A (+)
Input/Output
5
TxRx-
RS485 B (-)
Input/Output
6
TxRx+
RS485 A (+)
Input/Output
7
+12V EXT External supply
8
+12V EXT External supply
BEWARE! Power supply is selected on module PORT2-RS485 by help jumper, ref. 2.9.
