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Conclusion
In using modems, knowledge of many communication topics is required. This brief and rudimentary
application note covers only a miniscule amount of information needed to successfully attach a 10 Bit
Telephone Modem to an Analog Public Switch Telephone Network.
communication network requires areas of investigation as:
•
Protocol
•
Modem Compatibility With The Protocol
•
RS232 DTE or DCE emulation with the IED and Host.
•
Device Handshaking Requirements
•
Modem AT Command Set Configuration
•
S Register Configuration
•
Modem Save Command Commands
•
Cabling Options
ABB relays have been proven to operate reliably with many manufacturers modems.
configuration is the key to a successful project installation. It is hoped that this rudimentary application
note assists the user in the task of easily and flawlessly attaching a modem to ABB products.
MODEM COMMUNICATION TO ABB RELAYS
Page 47 of 47
Proper engineering of a
Careful system
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