Maintenance
12.1 Removing and inserting I/O modules/motor starters
Distributed I/O system
238
System Manual, 12/2016, A5E03576849-AG
Operating principle with CPU/interface module HF, HS
You can remove and insert any number of I/O modules during operation. The CPU/interface
module and the inserted I/O modules remain in operation.
NOTICE
Reaction of the CPU when removing and inserting the ET 200SP server module
Please note that the backplane bus is deactivated when you remove the server module,
regardless of the CPU operating state. Also note that the outputs do not adopt their
configured substitute value behavior when you remove the server module.
This means you should not remove the server module in the CPU operating states
STARTUP, RUN and STOP. If you have nevertheless removed the server module, perform
a POWER OFF/POWER ON after you have inserted the server module once again.
Operating principle with BusAdapter/CM DP module
It is not permitted to remove or insert the BusAdapter/CM DP module when the supply
voltage is switched on. If you remove the BusAdapter/CM DP module unintentionally after
startup of the CPU, the supply voltage of the BusAdapter/CM DP module is switched off
automatically. To switch on the supply voltage again, you need to perform a
POWER OFF/POWER ON after inserting the BusAdapter/CM DP module.
Operating principle with ST, BA interface module
1.
You can remove one I/O module during operation. If you remove another I/O module, this
results in a station stop of the ET 200SP distributed I/O system:
–
All I/O modules of the ET 200SP distributed I/O system fail
→ substitute value
behavior.
–
The interface module continues to exchange data with the IO controller and report
diagnostics.
Note
If you want to replace several I/O modules during operation, you must replace them
one after the other.
2.
If you insert all but one of the I/O modules withdrawn during operation, all I/O modules will
start up again.
Note
I/O modules inserted in empty slots and then removed are also regarded as withdrawn
during operation.
3.
After a POWER OFF/POWER ON of the supply voltage 1L+ of the interface module, all
available I/O modules start up again in keeping with the configuration. The evaluation of
the I/O modules removed during operation starts again (see 1).
Summary of Contents for Simantic ET200SP
Page 1: ......