The MMS module offers communication as per IEC 61850 manufacturing messaging specification (MMS) protocol.

The module supports 3 services:

  1. Cyclical reading of individual data attributes

  2. Cyclical reading of data sets Data sets are groups of data attributes that can be read together using a single command.

  3. Receiving of reports when changing the value within a data set This is the most efficient method of data transmission, since no cyclical data transmission occurs.

Basic settings

See General Module Settings

IEC 61850

Report Control Block

  • None: No report control block is used. The data is queried cyclically (see above service 1 and 2).

  • Preconfigured report control block (only visible with server connection): The server transmits data changes using the report control block. There is no need to poll the data. This is more efficient.

Data Set

Selection of the data sets to be used:

  • None: In this case, no data set is used and the data attributes to which the signals refer are read individually (see above service 1), relatively slow.

  • Dynamic: A new data set will be created, which contains all the data attributes referenced by the signals.

  • Configured data set (only visible with server connection): The preconfigured data set will be read and the data attributes referenced by the signals will be extracted from it.

Logical Device for the Data Set

Select the logical device you want to create the dynamic data set in. Can only be selected with data set = dynamic.

Update time

The update time determines how fast ibaPDA tries to read data from the IEC 61850 device. The actual resulting update time can be higher depending on the load of the device. Please check the diagnostic overview for measured update rates as overload will result in lost samples.

Use external timestamp

By default the data is resampled by ibaPDA. This way equidistant data is generated that is synchronized to data coming from other sources. Alternatively you can use the external timestamp from the IEC 61850 device. In this case you will have to select the "As is" profile in the data storage to store the data as non-equidistant data with the external timestamp. When calculations are done with the data then it will be resampled.