General

Use ACTTERM\ \ \

This parameter concerns only setpoints and commands. If this parameter is checked, an acknowledgement with set ‘actterm’ is generated as reason for transmission at the time at which the receive block is computed and outputs its telecontrol data at its output pins. On transmission side, the data block awaits the reception of this ACTTERM acknowledgement and reacts with its corresponding output (see IEC60870 Library: IEC60870 Library

Application timeout

This time indicates how long an acknowledgement will be awaited on the application level. An acknowledgement is generated only for commands and setpoints on the application level.

Station address

The station address defines which station will be subject to a count query. The values define the 2 bytes for the common telecontrol address (GADU1 and GADU2).

Value	Description
0	The station address is not used.
1…254	The count is queried on the station defined by the station address.
255	The count is queried on all accessible stations.

Timesync

After each new establishment of a link and once per hour, a ‘coarse time synchronisation’ message is generated. This time synchronisation is only supported from AC500 to external systems. Time synchronisation from an external system to AC500 is not provided!

Incoming time synchronisation messages are confirmed by the process station but not executed. Greenwich Mean Time (GMT) is used as the time for the synchronisation.

Send ‘Init end’ after reconnection\ \ \

After each establishment of a link or only in connection with the first establishment of a link and after reconfiguration, an init end message is generated. After the init end message, there is a general inquiry, if configured.