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Reference MVI56-101S ControlLogix Platform
User Manual IEC 60870-5-101 Slave Communication Module
Page 118 of 193 ProSoft Technology, Inc.
August 2, 2011
5.3.2 Module Initialization
After the module powers up, a specific initialization procedure occurs, depending
on the communication mode you selected (Balanced or Unbalanced).
Balanced and Unbalanced Modes
The module supports balanced and unbalanced modes. In balanced mode, each
station may initiate message transfers. If the links from the Master unit to several
slaves share a common physical channel, then these links must be operated in
an unbalanced mode to avoid the possibility of more than one device attempting
to transmit on the channel at the same time.
Select the communication mode with the following parameter:
To use balanced mode, configure the following parameters:
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