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IEC 60870-5-101, Dialup Master

see also protocol(s)IEC 60870-5-101
DOWNAdditional Information
DOWNThis protocol stack can be used with following products

The IEC 60870-5-101, Dialup Master protocol stack implements the IEC 60870-5-101 protocol in combination with integrated automatic calling (ACU Automatic Calling Unit) specifically for operation based on a variety of dialup connections, such as PSTN (Public Switched Telephone Network), GSM, ISDN and others.

IEC 60870-5-101, Dialup Master supports virtually all types of Hayes compatible modems. It features automatic recognition of the connected modem type. Configuration of additional initial modem strings is possible. The system performs cyclic operation checks on all modems during runtime, any modem failure is signalled to the super ordinate system.

IEC 60870-5-101, Dialup Master is capable of managing any number of  stations and modems. There is rule-based connection setup to a specified station:

  • cyclically, at a predefined interval
  • spontaneously following a switching command transmitted to a station
  • spontaneously with the connection setup initiated by the slave station
  • manually through the explicit command to dial up
  • manually through a general poll
  • The rules for connection teardown:

  • the configured timeout for the maximum connect time was exceeded
  • no ASDUs (Application Service Data Unit) were transmitted within a defined time interval
  • The associations between modems and the stations to be dialled up can be freely configured. In a typical configuration, several modems can be used at the same time to dial to several stations. The assignment between modems and stations can be made as required during operation rather than using a fixed definition. However, such a fixed assignment (one modem, one substation) can be easily configured.

    The stati of modems, connections and substations can be monitored through internal indications and reported to the super ordinate system. If a station does not respond within a predefined timeout or connection setup fails, all associated data points are dispatched to the super ordinate system with the quality identifier "invalid"/"not topical".

    The communication accepts both "balanced" and "unbalanced" transmission modes.

    IEC 60870-5-101, Dialup Master can be combined with ipRouteDialup.

    Additional Information

    Interoperablity pstack/IEC101DialupMaster/iec101master-interoperability.pdf

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