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Siemens CP 243-1 Operating Instructions Manual Page 130

S7-200 industrial ethernet.
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Timeouts
On the S7 bus
Meaning
Maximum time for one communication
cycle between the CP 243-1 and the
S7-200 CPU via the S7 bus
Note:
Three cycle times are usually required
per read/write request in the client use
case, one cycle time is required in the
server use case. Long execution times
of the read/write requests must be
expected with user programs which
require an extreme amount of time and
simultaneous communication via a lot
of channels.
Timeout for the successful transfer of
CDB/NDB when CP starts up
Time after which S7 CPU must detect
the CP 243-1 physically during a CPU
restart
Maximum time by which the configured
e-mail server must have accepted a
connection establishment request.
Maximum time by which a configured
FTP server must have accepted a
connection establishment request.
Timeouts on the S7 bus
On the user interface
Meaning
Latest time after which an error or
message code is returned by the
ETHx_CTRL subroutine with the Error
return parameter, must be reset by the
CP 243-1.
This code is also always located in the
SM memory area used by the CP 243-
1 in the two bytes with the offset 20 and
21
130
Action if timeout occurs
Request rejected, CP 243-1 restarts
CP 243-1 restarts
CP 243-1 restarts
Connection is not established, the CP
243-1 reports an error
Connection is not established, the CP
243-1 reports an error
Action if timeout occurs
Error or message code is set to 0
Fixed set time in seconds
10 (per cycle)
120
1
20
20
Fixed set time in seconds
60
Operating Instructions, 03/2012, C79000-G8976-C244-02
CP 243-1

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