Configuration
4.7 Partner stations
CP 1243-1
44 Operating Instructions, 12/2016, C79000-G8976-C365-02
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TCP keepalive monitoring time
If the value configured here differs from the value configured in the Ethernet interface
parameter group, the monitoring time of the "Partner stations" parameter group is used.
After sending a keepalive, the CP expects a reply from the communications partner within
the keepalive monitoring time. If the CP does not receive a reply within the configured
time, it terminates the connection.
Default setting: 10 s. Permitted range: 1...65535 s.
–
The parameter below the Ethernet interface
The monitoring time is configured for the Ethernet interface as a global setting for all
TCP connections.
–
The parameter below "Partner stations"
As with the TCP connection monitoring time, the value of "Partner stations" can be
adapted for each partner individually.
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In the "Permanent" connection mode, there is a permanent connection to the
communications partner.
The CP only supports this connection mode.
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Specifies the communications partner that establishes the connection (always the CP).
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Number of the listener port of the telecontrol server.
Partner stations > "Telecontrol server" > "Advanced settings"
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If the "Report partner status" function is enabled, the CP signals the status of the
communication to the remote partner.
– Bit 0 of "PLC tag for partner status" (data type WORD) is set to 1 if the partner can be
reached.
– Bit 1 is set to 1 if all the paths to the remote partner are OK (useful with redundant
paths).
– Bits 2-3 indicate the status of the send buffer (frame memory).
The following values are possible:
- 0: Send buffer OK
- 1: Send buffer threatening to overflow (more than 80 % full).
- 3: Send buffer has overflowed (fill level 100 % reached).
As soon as the fill level drops below 50%, bits 2 and 3 are reset to 0.
Bits 4 to 15 of the PLC tags are not used and do not need to be evaluated in the program.
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