User manual

Reference PTQ-104S Rev2 ♦ Quantum Platform
User Manual IEC 60870-5-104 Server for Quantum
Page 154 of 195 ProSoft Technology, Inc.
February 22, 2013
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 PTQ-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: