ProSoft Technology PTQ-101M - Manual (Page 141)

Reference PTQ-101M ♦ Quantum Platform
IEC 60870-5-101 Master Communication Module
ProSoft Technology, Inc. Page 141 of 181
May 14, 2008
The following diagram shows the functionality of the master driver:
Register
Data
Storage
Register
Data
Status
from
Module
Status
Master
Mode
Driver
0
4999
Database
Addresses
Processor Memory IEC 60870-5-101 Module Backplane Interface
Configuration
Status
3
4
5
6
1
2
1 The master driver is configured as specified by the IEC101M.CFG file
2 The master will construct control commands using the data in the database
3 The master will send these commands and class polls out on the serial
network
4 Response messages or spontaneous messages generated by controlled
devices on the serial network are received by the master driver
5 Monitor data (static and event) received by the master is passed to the
module's database and passed to the processor
6 Additionally, status data for the module is passed to the processor
7.3 IEC-60870-5-101 Protocol Implementation
This section presents an overview of how the PTQ-101M works, while skipping
the complex details of the protocol specification. If you require more information
about the implementation of the protocol, refer to the protocol specification (IEC
60870-5-101 2003). For more information on the configuring and modifying the
backplane implementation of the protocol with the PTQ-101M, refer to
Customizing the Sample Configuration File.
The IEC-60870-5-101 protocol applies to telecontrol equipment and systems with
coded bit serial data transmission for monitoring and controlling geographically
widespread processes.
Any application using the IEC-60870-5-101 protocol will have a master
(controlling station) and one or more slaves (controlled stations). The master will
constantly monitor and control the data from each slave in the network.