User manual

Reference PTQ-104S Rev2 ♦ Quantum Platform
User Manual IEC 60870-5-104 Server for Quantum
Page 138 of 195 ProSoft Technology, Inc.
February 22, 2013
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 gateway 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
The Freeze Start Type parameter will define when the gateway starts sending
the M_IT messages.