Reference Guide
IMACS System Release 5.1.9
C-3
Using the COM2 Port
The COM2 jack provides an RJ48 DTE connection to an external DTE device. Figure C-2
shows the COM2 jack pin locations, and Table C-1 lists the signal pinouts.
Figure C-2. RJ48 (COM2) Jack
Table C-1. RJ48 (COM2) Jack Signal Pinouts
RJ48 Pin
Designation
Function
1
RI
Ring Indicator (from DTE)
2
RLSD
Received Line Signal Detect (to DTE)
3
DTR
DTE Ready (from DTE)
4
GND
Signal Ground
5
RD
Receive Data (to DTE)
6
TD
Transmit Data (from DTE)
7
CTS
Clear to Send (to DTE)
8
RTS
Request to Send (from DTE)
Pin 1
Pin 8