Rockwell Automation DAG6.5.8 APPLICATION GUIDE SCADA SYSTEM - Manual (Page 275)

Publication AG-UM008C-EN-P - February 2005
Configuring Modems 8-9
DLM4000
The DLM4000 is a stand-alone industrial use modem that
communicates with Allen-Bradley equipment as either a dial-up or
leased line device. It is capable of communication at speeds up to
28.8K baud, and responds to standard AT commands. The DLM4000
has a rugged steel housing with large mounting flanges for ease of
installation.
Table 8.7 DLM 4000 Pin Assignment
DLM4000
Pin #
Assignment Assignment PLC-5 25-Pin AIC+,
Logix5550,
PC, or
SLC 500 9-Pin
1 PROTECT.GND SHIELD 1 CASE
2 RXD.IN TXD.OUT 2 3
3 TXD.OUT RXD.IN 3 2
4 RTS RTS.OUT 4 7
5 CTS CTS.IN 5 8
6 DSR DSR.IN 6 6
7 SIGNAL
GROUND SIGNAL
GROUND 7 5
8 CD DCD.IN 8 1
20 DTR DTR.OUT 20 4