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Endcaps 45
E-EQ-MX3RG-J-ARC MX3 Reference Guide
Dual Serial Port
1. DC Power Connector
2. Dual Serial Port
(COM 1 and COM 2)
Figure 2-20 Dual Serial Port
RS-232 connection is made through an RS-232 Serial Port if installed. The connector is an
industry-standard RS-232. The connector includes a PC/AT standard 9-pin ā€œDā€ male connector.
6
12
3
4
5
7
89
Figure 2-21 RS-232 Pinouts
PIN SIGNAL DESCRIPTION
1 DCD Not Connected
2 RXD Receive Data - Input
3 TXD Transmit Data - Output
4 DTR Not Connected
5 GND Signal/Power Ground
6 DSR Not Connected
7 RTS Ready To Send - Not Connected
8 CTS Clear To Send - Not Connected
9 RI
or
+5V DC
Ring Indicator - Input (Available for computer
wakeup. See Power Management)
Figure 2-22 9-Pin RS-232 Description