Interrupts - Siemens SIMATIC ET 200SP Manual

Interrupts, diagnostics, error, and system messages

5.2 Interrupts

Error display
The following table shows the possible causes of error that can occur.
Table 5- 5
Error type
(MT)
1
* Slot
Note
A short circuit in the backplane bus supply or the bus connection supply is indicated by the
following LEDs:
• PWR LED: On
• RN-, ER and MT LED: Off
5.2 Interrupts
Introduction
The I/O device generates interrupts as a reaction to specific error events. Interrupts are
evaluated based on the I/O controller used.
Evaluating interrupts with I/O controllers
The ET 200SP distributed I/O system supports the following interrupts:
● Diagnostics interrupts
● Hardware interrupts
● Swapping interrupts
● Maintenance events
In the event of an interrupt, interrupt OBs are automatically called in the CPU of the IO
controller.
Information on the cause and class of the error is already available, based on the OB
number and start information.
Detailed information on the error event can be obtained in the error OB using the instruction
"RALRM" (read additional interrupt information).
38
Error display
Error location Cause of error
(ER/MT)
65*
Missing server module
•
Interruptions at the backplane bus
•
Short circuit of communication on
•
the backplane bus
IM 155-6 PN HS interface module (6ES7155-6AU00-0DN0)
Manual, 09/2016, A5E34928647-AA
Remedy
Check the configuration
of the ET 200SP.