BayTech MRP units 2012 User Manual
Page 10
Page
10
CABLING
RJ45 Cable
Control Module RJ-45 pin Signals
Pin
EIA
232
Signal
Signal
Directio
n
Description
1
DTR
Out
+10V when activated by DCD. Toggles on logout for modem disconnect.
2 GND
Signal
Ground
3
RTS
Out
+10 V when power is applied. Not used as a handshake line.
4
TX
Out
Transmit (Data Out)
5
RX
In
Receive (Data In)
6 N/C
In
No
Connection.
7 GND
Signal
Ground
8
DCD
In
DCD into the MRP.
Adapter signals
Listed are the pin specifications for the BayTech cable and adapters and the terminal COM ports:
Serial 1: Port Pin out Table
Signal RS-232
Port (DS)
RS-232
Port
(MRP)
COM Port
DE-9 Pin
COM Port
DB-25 Pin
Signal
DTR 1
1
4
20 DSR
GND 2
2
1 GND
RTS 3
3
7
5 CTS
TXD 4
4
3
2 RXD
RXD 5
5
2
3 TXD
DSR 6
N/C
6
6 DTR
GND 7
7
5
7 GND
CTS 8
8
4 RTS
DTR
4
DCD
DCD
8
1
8 DTR
RI 9
22