Pro-face GP-3500L - Signals of Com Ports; Signals of Com1

4.3 Signals of COM ports
4.3.1 Signals of COM1
For GP-3500S/L
RS-232C (plug)
*1: RI and VICC of Pin 9 are switched on the software.
VCC Output is not protected from overcurrent.
Please follow the current rating to avoid false operation or breakdown.
RS-422/485 (plug)
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