Table 19: Timeouts At The S7 Bus - Siemens SIMATIC NET CP 243-1 Technical Manual

Timeouts
At the S7 bus:
Meaning
Maximum time for a communication
cycle between CP 243-1 and S7-200
CPU via the S7 bus
Note:
Per read/write command, generally 3
cycle times are required on the client
side and 1 cycle time on the server
side. Execution times of the
read/write commands can be ex-
pected to be long if the user pro-
grams are extremely long and com-
munication takes place over many
channels simultaneously.
Timeout for the successful transmis-
sion of the CDB / NDB during boot-
ing of the CP
Time after which the S7 CPU should
have physically recognized the
CP 243-1 as it boots.

Table 19: Timeouts at the S7 bus

74
Action at timeout
Command is discarded, CP 243-1
performs a warm start
CP 243-1 performs a warm start.
CP 243-1 performs a warm start.
09/02
Fixed time in seconds
10 (per cycle)
120
1
CP 243-1
J31069-D0428-U001-A1-7618