Interrupt, error, and system messages
4.2 Diagnostic messages of the electronic modules
IM151-1 HIGH FEATURE interface module (6ES7151-1BA02-0AB0)
Manual, 03/2008, A5E01075975-02
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4.2 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
● Several diagnostic messages can be output simultaneously.
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 diagnostics buffer of the CPU
● The SF LED of the interface module lights up.
● OB 82 is called. If OB 82 is not available, the CPU goes into STOP.
● Acknowledgment of the diagnostic interrupt (thereafter a new interrupt is possible).
4.3 Diagnostics with STEP 7
4.3.1 Reading out diagnostics
Introduction
The slave diagnostics comply with IEC 61784-1:2002 Ed1 CP 3/1. Depending on the DP
master, slave diagnostics can be read out with
STEP 7
for all DP slaves that comply with the
standard.
Length of the diagnostics frame
● The maximum frame length for the ET 200S is as follows:
– IM151-1 HIGH FEATURE (DPV0 mode): 64 bytes
– IM151-1 HIGH FEATURE (DPV1 mode): 128 bytes
● The minimum frame length is
– 6 bytes (identifier-related diagnostics, module status, and channel-specific diagnostics
disabled via parameter assignment).
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