APPENDIX B: ELECTRICAL AND DATA CONNECTORS
UB25 LINEAR DC RESISTANCE WELDING CONTROL
990-665 B-3
RS-232
RS-232 CONNECTOR SPECIFICATIONS
PIN NO. DESCRIPTION PIN TYPE
1 Not Used
2 TX (Transmit Data) RS-232 Driver
3 RX (Receive Data) RS-232 Receiver
4 Not Used
5 Signal Ground Analog Ground (ISOGND1)
6 Not Used
7 Not Used
8 Not Used
9 Not Used
PIN #2 --TX (TRANSMIT DATA)
PIN #3 -- RX (RECEIVE DATA)
PIN #4 -- NOT USED
PIN #5 -- SIGNAL GROUND
PIN #7 --NOT USED
PIN #8 -- NOT USED
PIN #9 -- NOT USED
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