ProSoft Technology MVI69-101S - Manual (Page 103)

Reference MVI69-101S ♦ CompactLogix or MicroLogix Platform
IEC 60870-5-101 Slave Communication Module
ProSoft Technology, Inc. Page 103 of 149
March 16, 2009
This feature allows you to separate the points into different groups according to
the priority level that these should be reported to the master. In the example
above, points 100 and 101 would be returned with a General Interrogation for
Group 1 and point 102 would be returned with a General Interrogation for Group
2:
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:
Freeze Start Type : D #D=Day, H=Hour, M=Minute, N=Not used
Interval For Freeze : 15 #Number of seconds after start type
#(0 to 65535)
Freeze Start Type
The Freeze Start Type parameter defines when the module starts sending the
M_IT messages.