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Rockwell Automation 1747-KE,D17476.12 DH-485/RS-232C Interface Module User Manual

Page 38

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Publication 1747-UM005B-EN-P - March 2006

3-12 Communicate with the Interface Module

For successful modem communication be sure that:

• RSLinx software and the interface module agree on

communication rate and error checking.

• both modems have the echo disabled.
• both modems have Carrier Detect set to normal (unforced).
• both modems have DTR Dialing disabled.
• the modem to receive the call has auto answer enabled.