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4.15 Telnet Function
4
FUNCTIONS
(3) Precautions on the Telnet function
(a) Precautions on Telnet connection
If the line is disconnected during use of Telnet, it cannot be reconnected until TCP
connection including the Telnet on the C Controller module side times out.
If line disconnection occurs during Telnet connection, reconnect it after timeout.
The timeout time for the C Controller module side Telnet (TCP) connection can be
changed by setting the values in the calculation formula and using one of the
setting methods introduced for each model.
[Calculation for the Q12DCCPU-V]
The timeout time is determined by the following calculation formula.
* 1 The number of retries cannot be changed.
Timeout time = net.inet.tcp.keepidle
+ ( net.inet.tcp.keepintvl 8 (number of retries)
*1
) [ms]
Initial value for C Controller module: 30000 (30 seconds)
Initial value for VxWorks: 7800000 (2 hours and 10 minutes)
net.inet.tcp.keepidle: Time elapsed from line disconnection to the first retry (ms)
Initial value for C Controller module: 22000
Initial value for VxWorks: 7200000
net.inet.tcp.keepintvl: Retry interval (ms)
Initial value for C Controller module: 1000
Initial value for VxWorks: 75000
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