Plant changes in RUN - CiR
11.9 Reconfigure existing modules in ET200M / ET200iSP stations
CPU 410 Process Automation/CPU 410 SMART
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System Manual, 05/2017, A5E31622160-AC
11.9.2
Module Response During a Reconfiguration
Principle
During reconfiguration the input modules can respond in one of the three following ways:
●
Channels not affected will continue to return the actual process value.
●
Channels not affected will return the process value which was valid prior to the
reconfiguration.
●
All channels will return the value "0" (applies to digital modules and FMs) or W#16#7FFF
(applies to analog modules).
Please refer to the technical data of the specific modules for information on their response.
Output modules respond as follows during reconfiguration:
The respective channels output the initial value which was valid before the parameter
assignment.
11.9.3
CPU response during reconfiguration
Re-configuration sequence
Once you have made the parameter changes in HW Config and have downloaded them to
the CPU in RUN mode, the CPU runs the tests described in "Behavior of the CPU after
download of the configuration in RUN". The input and output values have the status "OK"
after successful re-configuration.
You may only access those values in the process image that belong to the process image
partition of the OB currently being processed.
The DP master marks the modules as available in the module status data if data record
transfer was successful and as unavailable if data record transfer was not successful. In the
latter case, access to the module triggers an I/O access error (in the event of input process
image updates, transmission of the output process image to the module or direct access to
the module. Depending on the type of access, OB 85 or OB 122 is started).
The input or output data of the modules behaves in the same way as after a remove module
interrupt, which means it may not yet be correct (because the module may not yet have
evaluated its data records). However, the restriction that data record SFCs for the modules
can no longer be active no longer applies.
Note
If the re-configuration of a module involves disabling the diagnostic interrupt, for example,
the module may still subsequently send an interrupt that it has already prepared.