Diagnostics Options; Dp Slave Diagnostics - Siemens PROFIBUS CP 1542-5 Manual

6.2

Diagnostics options

Diagnostics options
You have the following diagnostics options available for the module:
● The LEDs of the module
For information on the LED displays, refer to the section Status and error display of the
CP (Page 23).
● STEP 7: The "Diagnostics" tab in the Inspector window
Here, you can obtain the following information on the selected module:
– Entries in the diagnostics buffer of the CPU
– Information on the online status of the module
● STEP 7: Diagnostics functions in the "Online > Online and diagnostics" menu
Here, you can obtain static information on the selected module:
– General information on the module
– Diagnostics status
– Information on the PROFIBUS interface
You can obtain further information on the diagnostics functions of STEP 7 in the STEP 7
online help.
● DP diagnostics
The DP diagnostics of the CP is described below.
The evaluation of diagnostics data records requested by the DP master and the
diagnostics interrupts or diagnostics alarms of the DP slaves is handled in the user
program of the DP master station.
6.3

DP slave diagnostics

DP-V1 slave: Diagnostics interrupt
The diagnostics data is transferred as a diagnostics interrupt. Diagnostics interrupts must be
acknowledged by the DP master.
Supported diagnostics functions
The CP 1542-5 supports the following blocks of DP diagnostics:
● Standard diagnostics (6 bytes)
● Identifier-related diagnostics (2 to 17 bytes), depending on the number of configured
transfer areas
● Module status (5 to 35 bytes), depending on the number of configured transfer areas
● If it exists: Diagnostics interrupt (8 bytes)
CP 1542-5
Manual, 11/2014, C79000-G8976-C326-03
Interrupts, diagnostics messages, error and system alarms
6.2 Diagnostics options
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