From The Power Module - Siemens SIMATIC ET 200S Manual

6.2.6.5 Diagnostics in the case of failure of the load voltage from the
power module
Load voltage failure
If the power module load voltage fails, electronic modules with their own controllers
(i.e. analog and process-related modules) behave as follows:
• If such a module is removed during a load voltage failure, a remove-module
interrupt is triggered.
• If such a module is inserted during a load voltage failure, the associated
insertion interrupt is only triggered when the load voltage is restored and the
module has started.
Restoration of load voltage
After restoration of the load voltage and startup of the electronic modules with their
own controllers, the parameters of the modules are reset with the saved startup
parameters by the IM151-3 PN.
Note
If the parameters of an electronic module with its own controller have been
changed, the data with the new parameters is no longer available after restoration
of the load voltage.
6.2.6.6 Diagnosis after a STOP of the I/O controller or after restart of
the O/O device
If diagnoses are received from the I/O device in STOP status of the I/O controller,
these diagnoses will not cause the corresponding organization blocks to start after
startup of the I/O controller. You must generate an image of the status of the
device yourself in the OB 100.
On restart of an I/O device data record E00C
shows all diagnoses for the slots assigned to an I/O controller in one device.
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Commissioning and Diagnostics
must be read with SFB 52. This
H
6-71