Industrial Data Systems IDS 160 - Manual (Page 38)

APPENDIX I. SERIAL COMMUNICATIONS PORT. ( 25 PIN 'D' CONNECTOR )
LIST BY PIN NUMBER LIST BY SIGNAL NAME
PIN SIGNAL SIGNAL PIN #
1 CHASSIS GND RS232 RXD 3
2 RS232 TXD RS232 TXD 2
3 RS232 RXD RS232 CTS 5
4 RS232 RTS (Print Request) RS232 RTS 4
5 RS232 CTS (Busy) CUR LOOP IN + 8
6 +5 R CUR LOOP IN - 22
7 GND CUR LOOP OUT 24
8 CUR LOOP IN + TTL RTS OUT 25
9 #2 RS232 RXD
10 #2 RS232 TXD
11 RS485 + #2 RS232 RXD 9
12 RS485 - #2 RS232 TXD 10
13 GND RS485 + 11
14 RS485 - 12
15 PULSE INPUT +
16 TTL INPUT (Remote Print Switch) RTS (+5R) 6
17 TTL INPUT (Remote Aux Switch) DTR (+8R) 20
18 TTL OUTPUT (Print Request +)
19
20 DTR (+8V)
21 TTL OUTPUT +5V 23
22 CUR LOOP IN - / PULSE IN - GND 7,13
23 +5 V TTL INPUTS 16,17
24 TTL OUTPUTS 18,21,25
25 TTL OUTPUT (open collector) PULSE INPUT+ 15
(Print Request -) PULSE INPUT- 22
NOTE: When using RS232 set dip switch 1 on, 2 off.
When using current loop set switch 2 off, 1 on.
Use pin 4 (RTS) for RS232 print request signal.
Use pin 18 for ttl positive true print request.
Use pin 25 for ttl negative true print request.