VIPA 313-6CF03, Руководство пользователя, Страница: 60 / 152

Chapter 4 Deployment CPU 313SC/DPM
Manual VIPA System 300S SPEED7
4-20 HB140E - CPU SC - RE_313-6CF03 - Rev. 07/45
In
Profibus-DP SyncInOut
mode CPU and DP-Master-System are waiting
on each other and form thereby a cycle. Here the whole cycle is the sum of
the longest DP master cycle and CPU cycle.
By this synchronization mode you receive global consistent in-/ output data,
since within the total cycle the same input and output data are handled
successively by CPU and DP master system.
If necessary the time of the
Watchdog
of the bus parameters should be
increased at this mode.
RUN
...
SPEED7 CPU:
SPEED-Bus
DP master system:
Cycle
Cycle
...
... ...
Cycle
whole cycle
In this operating mode the cycle time of the SPEED-Bus DP master system
depends on the CPU cycle time. After CPU start-up the DP master gets
synchronized. As soon as their cycle is passed they wait for the next
synchronization impulse with output data of the CPU. So the response time
of your system can be improved because output data were directly
transmitted to the DP master system. If necessary the time of the
Watchdog
of the bus parameters should be increased at this mode.
RUN
... ... ... ...
SPEED7 CPU:
SPEED-Bus
DP master system:
Cycle
RUN
SPEED7 CPU:
SPEED-Bus
DP master system:
... ... ...
Cycle
Cycle CPU > DPM
"1-tier CPU cycle"
Cycle CPU < DPM
"n-tier CPU cycle"
Cycle
In the operating mode
Profibus-DP SyncIn
the CPU cycle is synchronized
to the cycle of the SPEED-Bus Profibus DP master system.
Here the CPU cycle depends on the speed bus DP master with the longest
cycle time. If the CPU gets into RUN it is synchronized with all speed bus
DP master. As soon as the CPU cycle is passed it waits for the next
synchronization impulse with input data of the DP master system.
If necessary the
Scan Cycle Monitoring Time
of the CPU should be in-
creased.
RUN
...
... SPEED7 CPU:
SPEED-Bus
DP master system:
Cycle
Cycle
RUN
SPEED7 CPU:
SPEED-Bus
DP master system:
... ...
... ...
Cycle
Cycle
Cycle CPU > DPM
"n-tier longest DP master cycle"
Cycle CPU < DPM
"1-tier longest DP master cycle"
Profibus-DP
SyncInOut
Profibus-DP
SyncOut
Profibus-DP
SyncIn