ProSoft Technology MVI56-104S - Manual (Page 129)

Reference MVI56-104S ♦ ControlLogix Platform
User Manual IEC 60870-5-104 Server Communication Module
ProSoft Technology, Inc.
Page 129 of 188
November 18, 2009
If this parameter is set to 1, the module will ignore the STARTDT and STOPDT
requests by the client unit.
TESTFR Requests
Connections that are unused (but opened) may be periodically tested in both
directions by sending test messages (TESTFR=act) which are confirmed by the
receiving station sending TESTFR=con messages. The MVI56-104S module can
be configured to periodically send this message using the following parameter:
In the example above, the module would send a TESTFR.ACT message 30
seconds after receiving the last message: