When using IEC 60870-5 slave outstations, you need to create one or more IEC 60870-5 Slave Direct Outstation Sets. Geo SCADA Expert uses the IEC 60870-5 Slave Direct Outstation Sets as a way of determining which IEC 60870-5 outstations communicate via a specific direct channel. The Slave Direct Outstation Set ‘groups’ the outstations that use a defined channel (specified in the configuration of the outstation set).
However, with certain IEC 60870-5 protocols, an outstation set can only contain one slave outstation. For this reason, the number of IEC 60870-5 Slave Direct Outstation Sets you need to configure is dependent on the number of slave outstations on your system and the IEC 60870-5 protocols they use for communicating with the SCADA master:
You need to configure one IEC 60870-5 Slave Direct Outstation Set for each IEC 60870-5 slave outstation that:
- Communicates with the SCADA master using the IEC 60870-5-104 protocol
or
- Uses the IEC 60870-5-101protocol for Balanced transmissions.
This is because slave outstations that use these protocols cannot be grouped with other outstations (and so each slave outstation requires its own slave direct outstation set).
If you have IEC 60870-5 slave outstations that communicate with the SCADA master using the IEC 60870-5-101 protocol with Unbalanced transmissions:
- Configure one IEC 60870-5 Slave Direct Outstation Set for each serial port (to which the IEC 60870-5 slave outstations connect)
When you have created an IEC 60870-5 Slave Direct Outstation Set, you will need to configure it using the fields on the IEC 60870-5 Slave Direct Outstation Set Form (see Configuring an Outstation Set in the Geo SCADA Expert Guide to Advanced Drivers).
There are no driver-specific properties on IEC 60870-5 Slave Outstation Sets.
Further Information
For information on specifying the Transmission Procedure on channels that communicate using the IEC 60870-5-101 protocol, see Configure IEC 60870-5-101 Protocol Properties.