Commissioning and Diagnostics
6-23
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
6.1.5 Evaluating the interrupts o f the ET 200S
Introduction
At specific process states or errors the DP slave saves an interrupt block with the
relevant information in the diagnostic messages (DPV1 interrupt mechanism).
Independent of this the DP slave diagnostic status is executed in the ID-related
diagnostics, in the module status and the channel-related diagnostics.
Interrupts in DPV0 operation
No interrupts are defined for DPV0 operation under the PROFIBUS standard.
Therefore, an interface module in DPV0 operation does not trigger an interrupt.
Interrupts in DPV1 operation
The ET 200S supports the following interrupts:
• Diagnostics Interrupts
• Process Alarms
• Insert/remove-module interrupts
Requirement: Interrupts are only supported if the ET 200S is operated with the
IM151-1 ST ANDARD (as of 6ES7 151-1AA04-0AB0), IM151-1 FO STANDARD
(as of 6ES7 151-1AB03-0AB0) and IM151-1 HIGH FEATURE interface modules in
DPV1 operation.
In the event of an interrupt, interrupt OBs are automatically executed in the CPU of
the DP master (see the programming manual System Software for S7300/ S7400,
Program Design).
Triggering of a diagnostic interrupt
When an incoming or outgoing event (for example wire break) is registered, the
module triggers a diagnostic interrupt if ”Enable: Diagnostic interrupt” is set.
The CPU interrupts the processing of the user program and processes the OB 82
diagnostic block. The result that triggered the interrupt is added to the OB 82 start
information.
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