In the operating mode PROFIBUS DP SyncIn the CPU cycle is synchronized to the cycle
of the VIPA PROFIBUS DP master system. Here the CPU cycle depends on the VIPA DP
master with the longest cycle time. If the CPU gets into RUN it is synchronized with each
PROFIBUS DP master. As soon as the CPU cycle is passed, it waits for the next synchro-
nization impulse with input data of the DP master system. If necessary the Scan Cycle
Monitoring Time of the CPU should be increased.
5.9.2.2
Token Watch
By presetting the PROFIBUS bus parameters within the hardware configuration a token
time for the PROFIBUS results. The token time defines the duration until the token rea-
ches the DP master again. Per default this time is supervised. Due to this monitoring dis-
turbances on the bus can affect a reboot of the DP master. Here with the parameter
Token Watch the monitoring of the token time can be switched off respectively on.
Default: On
5.9.2.3
Number remanence flag
Here the number of flag bytes may be set. With 0 the value Retentive memory > Number
of memory bytes starting with MB0 set at the parameters of the Siemens CPU is used.
Otherwise the adjusted value (1 ... 8192) is used. Default: 0
5.9.2.4
Phase offset and execution of OB 33 and OB 34
The CPU offers additional cyclic interrupts, which interrupt the cyclic processing in certain
distances. Point of start of the time interval is the change of operating mode from STOP
to RUN. To avoid that the cyclic interrupts of different cyclic interrupt OBs receive a start
request at the same time and so a time out may occur, there is the possibility to set a
phase offset respectively a time of execution.
n
The
phase offset
(0 ... 60000ms) serves for distribution processing times for cyclic
interrupts across the cycle. Default: 0
n
The time intervals, in which the cyclic interrupt OB should be processed may be
entered with
execution
(1 ... 60000ms). Default: OB 33: 500ms, OB 34: 200ms
5.9.2.5
Priority of OB 28, OB 29, OB 33 and OB 34
The priority fixes the order of interrupts of the corresponding interrupt OB. Here the fol-
lowing priorities are supported: 0 (Interrupt-OB is deactivated), 2, 3, 4, 9, 12, 16, 17, 24.
Default: 24
PROFIBUS-DP SyncIn
VIPA System 300S
+
Deployment CPU 314-6CF23
Setting VIPA specific CPU parameters > VIPA specific parameters
HB140 | CPU | 314-6CF23 | en | 19-01
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