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RJ-45
Pin No.
1
2
3
4
5
6
7
8
CTS
DCD
RXD
TXD
GND
DTR
RTS Request to Send
Ready Out
Data Out
Ground
Data In
Carrier Detect
Clear to Send
Pin 8
Pin 1
Control Module
RS232 Serial Port
FigureA.1:SerialPortInterface
Appendix A. Interface Description
A.1. Serial Port (RS232)
DCD and DTR hardware lines function as follows:
1. Whenconnected:
a) If either port is set for Modem Mode, the DTR output at either port reflects the
DCD input at the other end.
b) If neither port is set for Modem Mode, DTR output is held high (active).
2. Whennotconnected:
a) If the port is set for Modem Mode, upon disconnect DTR output is pulsed for
0.5 seconds and then held high.
b) If the port is not set for Modem Mode, DTR output is controlled by the DTR
Output option (Serial Port Parameters Menu, Option 23). Upon disconnect,
Option 23 allows DTR output to be held low, held high, or pulsed for 0.5
seconds and then held high.