Ovation 1C31169G02 - Page 17

2-4. Interface Connections
U3-1021 2-10 2/99
Westinghouse Proprietary Class 2C
Figure 2-4. Terminal Block RS-485/RS-422 Four-Wire Serial Interface (1C31169G02)
(Non-CE Mark)
Com
RES
RX+
RX-
RES
TX+
TX-
SH
Earth GND
Com
RES
RX+
RX-
RES
TX+
TX-
SH
Earth GND
Remote Shield Grounding
Local Shield Grounding
Base Unit Terminal Block
Base Unit Terminal Block
Third Party Device
Third Party Device
Add jumper if parallel
termination resistor is desired.
Add jumper if parallel
termination resistor is desired.
Com
TX+
TX-
RX+
RX-
Com
TX+
TX-
RX+
RX-