GMBHR168 Datasheet, PDF (24/70 Pages) List of Unclassifed Manufacturers – Mini BLOCK Housing 16 opto inputs, 8 Relay outputs

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5 RX RS232 o RX TTL
3 TX RS232 o RX TTL
7 _GND
ITALIAN TECHNOLOGY
TX
RX
GND
FIGURE 8: RS 232 AND TTL POINT TO POINT CONNECTION EXAMPLE
RX- RS422
6
RX+ RS422
5
TX- RS422
3
TX+ RS422
4
GND
7
TX-
TX+
RX-
RX+
GND
FIGURE 9: RS 422 POINT TO POINT CONNECTION EXAMPLE
Page 16
RXTX- RS485
6
TX-,RX-
RXTX+ RS485
5
TX+,RX+
GND
7
GND
FIGURE 10: RS 485 POINT TO POINT CONNECTION EXAMPLE
GMB HR168 Rel. 5.00