Siemens CP 1243-7 LTE Operating Instructions Manual page 55

Advanced options > Transmission settings
● Connection establishment delay
The settings made here apply to the connection to the telecontrol server.
The reconnection delay is the waiting time between repeated attempts to establish the
connection by the CP when the telecontrol server is not reachable or the connection has
aborted.
This waiting time avoids continuous connection establishment attempts at short intervals
if there are connection problems.
A basic value is configured for the waiting time before the next connection establishment
attempt. Starting at the basic value, the current waiting time is doubled after every 3
unsuccessful retries up to a maximum value of 900 s.
Default setting: 10 s. Permitted range of values for the basic value: 10...300 s
Example:
A configured basic value 20 results in the following intervals (waiting times) between the
attempts to re-establish a connection:
– three times 20 s
– three times 40 s
– three times 80 s
– etc. up to max. 900 s
Note
If the partner cannot be reached, connection establishment via the mobile wireless
network can take several minutes. This may depend on the particular network and current
network load.
Depending on your contract, costs may result from each connection establishment
attempt.
● Send monitoring time
Time for the arrival of the acknowledgment from the partner (Telecontrol server) after
sending unsolicited frames. The time is started after sending an unsolicited frame. If no
acknowledgement has been received from the partner when the connection monitoring
time elapses, the frame is repeated up to three times. After three unsuccessful attempts,
the connection is terminated and re-established.
Default setting: 60 s. Permitted range: 1...65535 s.
CP 1243-7 LTE
Operating Instructions, 04/2017, C79000-G8976-C381-03
Configuration
4.7 Ethernet interface (X1)
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