Configuration Options with the ET 200M
3-19
Distributed I/O Device ET 200M
EWA-4NEB780600602-06
3. Settings at the DP slave:
”Object Properties” of the DP slave> ”Clock Synchronization” tab
– Activate ”Synchronize DP slave with equidistant DP cycle”.
– Enter the times Ti and To (if not set at the master system under ”Times Ti
and To identical for all DP slaves”). Recommendation: Accept the default
settings for Ti and To.
– Select the modules to be synchronized and, in the ”Addresses” tab, assign
them to the subprocess image defined in the CPU.
General Time Stamping Clock Synchroniz.
Time Ti (read in process values):
(min = 0.5000 ms; max =3.8750 ms)
3.5000 Graduation:ms ms
Time To (output process values):
(min = 0.9375 ms; max = 3.8750 ms)
3.5000 Graduation:ms ms
Synchronize DP slave with equidistant DP cycle (Ti / To identical for all slaves)
DP Slave Properties
Identification Special Time Synchronization
Equidistant DP cycle:
(min = 3.402 ms; max = 32.000 ms)
8.000 ms
Ļ
Figure 3-9 ”DP Slave Properties” dialog box
Note
If you click ”Clock Synchronization” in the ”Edit” menu, a configuration overview of
the clock-synchronized modules is displayed.
4. Create the user program:
– Create the OB 61.
– At the beginning of the OB 61, the SFC 126 must be called to update the
subprocess image of the inputs.
– At the end of the OB 61, the SFC 127 must be called to update the
subprocess image of the outputs.
– The subprocess image parameterized in the CPU (”Clock-Synchronized
Interrupts” tab) must be used as the subprocess image.
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