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
cyclically, at a predefined
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
manually through a general
The rules for connection
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
The communication accepts
both "balanced" and "unbalanced" transmission modes.
This protocol stack can be used with following products
Universal protocol converter for small and distributed applications
Please note that the configurator is temporarily unavailable due to maintenance reasons.