ProSoft Technology 5105-103M-PDPS - Manual (Page 92)

Reference 5105-103M-PDPS ♦ ProLinx Gateway
User Manual IEC 60870-5-103 Master to PROFIBUS Slave Gateway
Page 92 of 144 ProSoft Technology, Inc.
November 24, 2010
Initialization
According to the IEC 60870-5-103 protocol, the Master should send a Reset FCB
(or Reset CU) request to all slaves on the network. The ProLinx 103M module
will only send the initialization requests to the Data Link Addresses that are
configured as sessions. Once the slave responds to the FCB request with an
ACK response, the master starts polling the slave. The master will continuously
send the Reset FCB request until it receives the ACK response.
The user may also configure the module to send time synchronization and
general interrogation requests once the slave has responded to the reset FGD
request. Refer to the configuration file for the initialization parameters.
If the slave is not responding to the initialization request, the user should verify
the following items in order to troubleshoot the configuration:
Verify that the slave address (Data Link Address) is configured as a session
(slave) in the module. For example, if the module has two sessions correctly
configured (Data Link Addresses 1 and 2), and the slave is configured with a
Data Link address of 3, the slave will not respond to the initialization request.
Verify that the communication port parameter matches the network
parameters.
Check cables
Verify that the communication mode jumpers (RS-232 or RS-485) are set
correctly.
Data Transfer in Monitor Direction
The master driver cyclically polls data from the slaves. The data is classified into
two classes; Class 1 and Class 2. Events belong to Class 1 and analog data to
Class 2. The user may configure the module to set how frequently the master will
poll with both classes.
The slave will respond to a Class 2 poll with specific data points. The user can
configure these points in the ProLinx module in order to periodically update the
database with the point values. The other protocol can access these points using
the same database.
Data Transfer in Control Direction
The ProLinx 103M module can be configured to issue commands to the
configured slaves (sessions). The General Command can be used to transfer
data from the module to each slave. The user may associate a control data point
with a register in the internal database using the configuration file. The module
may also send a time synchronization request to the device.
The module supports up to 500 commands. Each command is associated with a
configured session and server. It is essential that the slave is correctly configured
in order to have successful command communication.