Siemens SIMATIC IM151-1 STANDARD User Manual

Interrupt, error, and system messages
4.2 Process interrupt lost
Interface module IM151-1 STANDARD (6ES7151-1AA06-0AB0)
38 Manual, 07/2015, A5E01075950-AD
4.2
Process interrupt lost
"Process interrupt lost" Diagnostics
Modules with a controller use the "Process interrupt lost" diagnostics.
The "Process interrupt lost" diagnostics are not currently available for the 2DI 24 V DC High
Feature and 4DI 24 V DC High Feature modules.
Note
Process interrupts should not be used for technological purposes (e.g. cyclical generation of
process
interrupts).
If more than approximately 90 process interrupts are generated per second, process
interrupts may be lost.
4.3
Diagnostic messages of the electronic modules
Actions following a diagnostic message in DPV0 mode
The error is entered in the diagnostics frame in the channel-specific diagnostics:
● The SF LED on the interface module lights up.
● Several diagnostic messages can be output simultaneously.
● OB 82 is called. If OB 82 is not available, the CPU goes into STOP.
Actions Following a Diagnostic Message in DPV1 mode
Each diagnostic message triggers the following actions:
● Diagnostics can be reported as diagnostic interrupts in DPV1 mode.
● After a diagnostic message is signaled, the message is:
– Entered in the diagnostic frame as a diagnostic interrupt block (always limited to one
interrupt)
– Written to the diagnostic buffer of the CPU
● The SF LED on the interface module lights up.
● OB 82 is called. If OB 82 is not available, the CPU goes into STOP mode.
● Acknowledgment of the diagnostic interrupt (thereafter a new interrupt is possible).

Siemens SIMATIC IM151-1 STANDARD Specifications

General

Brand	Siemens
Model	SIMATIC IM151-1 STANDARD
Category	Control Unit
Language	English