ProSoft Technology 5205-104S-PDPS - Manual (Page 53)

Protocol Implementation 4205/5205-TS-104S-PDPS ♦ ProLinx Standalone
IEC-60870-5-104 to PDPS Communication Module with Time Stamp
ProSoft Technology, Inc. Page 53 of 128
July 12, 2007
2.1.6 Events
In order to improve communication efficiency, most applications will require the
client to periodically poll for data changes with a higher priority than polling for
monitor data. Every time a data changes, the server sends this information,
typically with the date and time information on when it has occurred.
Deadbands
The monitored measured points (M_ME_NA and M_ME_NB) will only generate
events if the data changes from a value greater than the configured deadband
value.
For example, with the following point configured:
[M_ME_NB_1 104]
# Default
# Point # DB Address Group(s) Deadband
# ------- ---------- -------- --------
START
500 105 80000000 100
END
So, if the current value for this point is 130, it would only generate events if:
NEW VALUE is less or equal than 30
OR
NEW VALUE is greater or equal than 230.
You can set the deadband for each monitored measured point through the
configuration file.
The client may also dynamically change the deadband for each monitored point.
The client may send one of the following commands:
Type Command
110 Parameter of Measured Normalized Data (M_ME_NA)
111 Parameter of Measured Scaled Data (M_ME_NB)
112 Parameter of Measured Short Floating Point (M_ME_NC)