Diagnostics And Reaction To Interrupts On The Cp 142-2; Diagnostics And Reaction To Interrupts With The Bm141/Bm142; Interrupt Events - Siemens SIMATIC NET CP 142-2 Manual

B8976111/02

3.3 Diagnostics and Reaction to Interrupts on the CP 142-2

If the CP 142-2 detects an error during operation (AS-i slave failed, EEPROM fault on the CP, ...), it
indicates this by triggering a diagnostic interrupt. The reaction to this diagnostic interrupt depends on
the basic module being used.

3.3.1 Diagnostics and Reaction to Interrupts with the BM141/BM142

The basic module BM141/ BM 142 signals this diagnostic interrupt in PROFIBUS-DP with slave
diagnostics complying with the standard EN 50170 Part 2. The diagnostic frame sent by the ET 200X
distributed I/O system is described in /4/. In particular, the ET 200X signals the "data record 1"
supplied by the CP 142-2 in "device-specific diagnostics". The CP 142-2 indicates the cause of the
diagnostic interrupt, for example the failure of an AS-i slave in data record 1.
When using the CP 142-2 in the basic module of the ET 200X, remember that the diagnostic
interrupts must be enabled (refer to the configuration tool you are using).
The reaction to the ET 200X diagnostic information depends on the PROFIBUS-DP master you are
using and how you react in the application program. For more detailed information about
programming, refer to the documentation of your PROFIBUS-DP master.

3.3.1.1 Interrupt Events

The following events can lead to a diagnostic interrupt being triggered by the CP 142-2:
All changes to the AS-i slave configuration in the protected mode
±
AS-i Power Fail in the protected mode
±
EEPROM Error
±
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AS-i Master Module CP 142-2