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Physical Controls 41
E-EQ-MX3CERG-G-ARC MX3-CE Reference Guide
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.
Figure 2-3 RS-232 Pinouts
PIN SIGNAL DESCRIPTION
1 DCD Carrier Detect
2 RXD Receive Data - Input
3 TXD Transmit Data - Output
4 DTR Data Terminal Ready
5 GND Signal/Power Ground
6 DSR Data Set Ready
7 RTS Ready To Send
8 CTS Clear To Send
9 RI
or
+5V DC
Ring Indicator - Input
Figure 2-4 9-Pin RS-232 Description