ProSoft Technology 5201-DFNT-104S - Manual (Page 49)

IEC-60870-5-104 (104S) Protocol Implementation 104S v2 ♦ ProLinx Gateway
Protocol Manual (Firmware v2.xx)
ProSoft Technology, Inc.
Page 49 of 157
March 19, 2010
3.3 Using Monitor Points
The following monitor points are supported by the 104S v2 gateway:
Symbol Description Data Size in
Database Addressing
Type
M-SP-NA Monitored Single-Points 1 bit Bit
M-DP-NA Monitored Dual-Points 2 bits Bit
M-ST-NA Monitored Step-Points 1 byte Byte
M-ME-NA Monitored Measured Normalized-Points 1 word Word
M-ME-NB Monitored Measured Scaled-Points 1 word Word
M-ME-NC Monitored Measured Short Floating Points 2 words Double-Word
M-IT-NA Monitored Counter-Points 2 words Double-Word
Each monitor point is identified by its Information Object Address (it should be
unique for each Common ASDU Address in the network). For each monitor point,
configure the following parameters:
Point # - The information object address of the point. It identifies the point in the
network.
DB Address - The database location in the 104S v2 gateway associated with the
point. You must associate each point to a database address in the 104S v2
gateway. The interpretation of this parameter depends on the point type
configured. For example, for an M_SP_NA point, this value represents the bit
address. For a M_ME_NA point, this value represents the Word address.
Group(s) - This is the group definition for the point. It sets how the point will be
polled by the master (cyclic or group interrogation). It can also be used to enable
or disable the event generation for one specific point. The group parameter is
discussed in the Data Communication section.
Deadband - Sets the deadband for each Measured point. If the value changes
from more than the configured deadband , the module gatewayenerate an event
for this point.
IV DB Bit - This feature allows the application to set the invalid (IV) quality bit of
the protocol for all the monitored ASDU types supported. If you enable this
feature, the other gateway protocol can determine the individual IV quality bit
status of each point you configured.