
Reference PTQ-104S Rev2 ♦ Quantum Platform
User Manual IEC 60870-5-104 Server for Quantum
Page 174 of 195 ProSoft Technology, Inc.
February 22, 2013
9.5 Group Codes
One aspect of the point configuration database that leads to confusion is the
group definition field, which assigns each point to one or more interrogation
groups. Use of interrogation groups permits the controlling unit to interface with a
specific set of data. Refer to the IEC 60870-5-104 standard for a full discussion
of interrogation groups. A specific group, Periodic data group, reports data points
on a set frequency. The frequency is set in the Cyclic Data Transmission
parameter in the configuration file. Remember that a point can be assigned to
more than one group.
Interrogated by general interrogation (station or global)
Interrogated by group 1 interrogation
Interrogated by group 2 interrogation
Interrogated by group 3 interrogation (See Note 1, below)
Interrogated by group 4 interrogation
Interrogated by group 5 interrogation
Interrogated by group 6 interrogation
Interrogated by group 7 interrogation
Interrogated by group 8 interrogation
Interrogated by group 9 interrogation
Interrogated by group 10 interrogation
Interrogated by group 11 interrogation
Interrogated by group 12 interrogation
Interrogated by group 13 interrogation
Interrogated by group 14 interrogation
Interrogated by group 15 interrogation
Interrogated by group 16 interrogation
Interrogated by general counter request
Interrogated by group 1 counter request
Interrogated by group 2 counter request
Interrogated by group 3 counter request
Interrogated by group 4 counter request
Disable event scanning of this point
Periodic/cyclic data returned from unit
Note 1: Group 3 interrogation also returns the parameter data (ASDU 110 – threshold, low limit
and high limit) for all monitored measured points.
If the highest bit (bit 31) is set, data will be produced by the driver for the
specified point at the rate set for periodic data generation. Bit 30 (0x40000000)
enables scanning of this point for event generation. If the bit is clear and the data
type is set for scanning, events will be generated for the point. If the bit is set,
events will not be generated for the point. This feature can be used to select
which points will generate events for the controlling station and can get rid of
event data that is not important to the application.
Kommentare zu diesen Handbüchern