Alarm And System Messages - Siemens SIMATIC S7-1500 Manual

Alarm and system messages

Pull/plug interrupt
Each pulling and plugging action of a configured module results in a pull/plug interrupt.
OB 83 is started when a configured module is pulled in RUN mode. If OB 83 is not
programmed, the CPU switches to STOP.
When plugging a module into a configured slot in the RUN state, OB 83 is started and the
parameter assignment is made if the module matches.
You can find additional information in the STEP 7 online help.
Firmware update
The firmware update is possible:
• Firmware update of the IM 155-5 PN HF or the active backplane bus leads to a restart of
the station.
Pull/plug interrupts of the plugged modules can be reported during a firmware update of
the active backplane bus.
• Firmware update of a I/O module leads to a restart of this I/O module only. Other I/O
modules are not affected.
• Firmware update of a I/O module in isochronous mode results in a restart of the station.
Active backplane bus ST 1+12 slot, active backplane bus ST 1+8 slot, active backplane bus ST 1+4 slot
Equipment Manual, 07/2020, A5E46240468-AB
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