ProSoft Technology MVI56-104S - Manual (Page 110)

MVI56-104S ♦ ControlLogix Platform Reference
IEC 60870-5-104 Server Communication Module User Manual
Page 110 of 188
ProSoft Technology, Inc.
November 18, 2009
Counter Points
There are four modes of acquisition of integrated totals (M_IT_NA points) defined
by the protocol specification. The actual values may be memorized (copied)
periodically to frozen values by a freeze command received from the master or
initiated locally within the module.
The module supports the following modes:
Mode A - Local freeze with spontaneous transmission
Mode D - Counter interrogation commands from the master initiate the freeze
operation and the frozen values are reported spontaneously.
Example - Mode A
To use Mode A, configure the following parameters: