Industrial Data Systems IDS DT200 - Manual (Page 32)

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6.2 SERIAL CHANNEL 2 WIRING LIST ( 25 PIN 'D' CONNECTOR )
SIGNAL PIN #
#2 RS232 RXD 9 ---- Jumper W1 IN
#2 RS232 TXD 10
#2 RS485 - 11 ---- Jumper W IN
#2 RS485 + 12
#2 CUR LOOP IN + 18 ---- Jumper W16 IN
#2 CUR LOOP IN - 19
#2 RS422 IN + 18 ---- Jumper W IN
#2 RS422 IN - 21
+5R (soft 5V) 23
GND 13