page 27 of 44M.1k2 Hardware Guide - Version 1.3
Appendix B - DSUB-9 Pin assignments
Appendix B - DSUB-9 Pin assignments
RS-232
The RS-232 port handles bitrates of 9600, 19200, 38400 and 115200 bps without
RTS/CTS support.
PIN Signal
2 RX
3 TX
5 GND
RS-4xx
The RS-4xx port can be confi gured to handle RS-422 or RS-485 signals and bitrates
of 9600, 19200, 38400 and 115200 bps.
PIN Signal
1 GND
2 RS-422 RX+
3 RS-422 TX- / RS-485 RX-
4 GND
5
6 GND
7 RS-422 RX-
8 RS-422 TX+ / RS-485 RX+
9
GPO
M.1K2 has four GPOs which can be switched manually or triggered by certain
events. Ground-free switching is performed by Avago ASSR-1411-S optical
MOSFETs, which can switch up to 60 V, 0.6 A AC or DC.
PIN Signal
1/6 GPO 1
2/7 GPO 2
3/8 GPO 3
4/9 GPO 4
jack - male
jack - female
jack - female
12345
9 8 7 6
12345
9 8 7 6
1 2 3 4 5
9876
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