User manual

Publication AG-UM008C-EN-P - February 2005

8-6 Configuring Modems

encased in a rugged steel enclosure with large mounting flanges for

ease of installation.

The DLM4300 connects to the PC/PLC through a DB-9 female

connector. All connections and LEDs are located at the front of the

modem. Line connection is made through the RJ-45 jack, as are the

LEDs for Data Out, Data In, Carrier Detected and Power, providing

visible confirmation of modem operation and diagnosis.

Figure 8.3 DLM4300 Assignments

LLM1000-2 and LLM1000-4

The LLM1000 series modems are 2 and 4 wire Frequency-shift keyed,

half-duplex/simplex, Bell 202/CCITT V.23 compatible, 0 to 1200 baud

modem that interface with Allen-Bradley equipment. They are

designed to be used on private, leased unswitched telephone lines or

any dedicated two conductor wire (twisted or untwisted, shielded or

Table 8.3 DLM4300 DB-9 Assignments

DLM4300 Pin # PLC-5 25-Pin AIC+, Logix5550, PC, or

SLC 500 9-Pin

Assignment

1 8 1 Carrier Detect

2 3 2 Transmit Data

3 2 3 Receive Data

4 20 4 DTR

5 7 5 Signal Ground

6 6 6 DSR

7 4 7 RTS

8 5 8 CTS

9 NC NC Ground