ProSoft Technology 5205-104S-PDPS - Manual (Page 38)

4205/5205-TS-104S-PDPS ♦ ProLinx Standalone Protocol Implementation
IEC-60870-5-104 to PDPS Communication Module with Time Stamp
Page 38 of 128 ProSoft Technology, Inc.
July 12, 2007
The points that are typically transferred from the server to the client are also
known as Monitor Points (or Monitor Information Objects). The points that are
typically transferred from the client to the server are also known as Control
Points
(or Command Information Objects).
The 4205/5205-TS-104S-PDPS module contains an internal database of 4000
words. You must associate the monitor and control points to database addresses
in the 4205/5205-TS-104S-PDPS module. To configure the points for the
4205/5205-TS-104S-PDPS module, follow these steps:
1 Calculate the number of monitor and control points for the application.
2 Calculate the 4205/5205-TS-104S-PDPS module database regions that are
required for the application, based on the number of monitor and control
points. Define two separate regions. Remember that each data type stores a
different quantity of data (for example, M_SP_NA uses one bit, M_ST_NA
uses one byte, and so on).
3 Configure each point within its 4205/5205-TS-104S-PDPS module database
region.
2.1.3 Using Monitor Points
The following monitor points are supported by the 4205/5205-TS-104S-PDPS
module:
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 4205/5205-TS-104S-PDPS module
associated with the point. You must associate each point to a database address
in the 4205/5205-TS-104S-PDPS module. 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.