Advantech Note The RS-232 cable does not have to be, RS-485, RS-232 Connector ADAM-4550

P C

2RX

3TX

7RTS

8CTS

4DTR

6DSR

5GND

RS-232

2 RX/TX	RF
3 TX/RX	Module
7 CTS/RTS
8 TRS/CTS
4 DSR/DTR
6 DTR/DSR	DATA+
	DATA-
5 GND	RS-485
ADAM-4550

RF	DATA+
Module	DATA-
	RS-485

RS-232 Connector

ADAM-4550

DATA+

DATA-

RS-485

ADAM-4011

Note: The RS-232 cable does not have to be

anull-modem cable. The ADAM-4550 will automatically detect and set itself as a DCE.

Figure 1: Basic Connection Diagram

ADAM-4550 User's Manual

9