How Option Handling Works - Siemens SIMATIC ET 200S Manual

How it works
At option handling, the configuration of slots 2 to 63 of the ET 200S is checked. If
the check is enabled for a slot, the RESERVE module (option) or the configured
electronic module can take up this slot without a diagnosis being reported. If the
check is disabled, only a configured electronic module can be located in this slot.
Any other module will trigger a diagnosis. You can also control the configuration of
slots 2 to 63 and monitor the configuration of slots 1 to 63 using the control and
feedback interface in the process input/output image (PII) and (PIQ).
Figure 3-9
ET 200S Distributed I/O System
EWA-4NEB780602402-09
The setting of the "Operation at Preset <> Actual configuration"
parameter is not relevant for the process illustrated.
Is the configured
electronic module inserted?
No
Bit in PII = 0
Slot
enabled (configuration in
HWCONFIG)
?
Yes
Slot
enabled in PII
(bit in PII**=0)
?
Yes
Is the
RESERVE module
inserted, or is there an empty
slot at the right-hand end of the
ET 200S
station
?
Yes
No error
No diagnosis

How option handling works

Configuration Options
Yes
No error
Bit in PII* = 1
No
Preset <> actual configuration
Diagnosis is reported
No
No
Incorrect module
Removed module
* PII = process input image
** PIQ = process output image
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