Siemens SIMATIC ET 200AL System Manual page 1067

System diagnostics by means of the user program
5.1 Options of system diagnostics in the user program
Introduction
You can configure responses to diagnostics alarms in the user program. You can, for
example, specify that your plant is stopped in case of specific diagnostics alarms.
Instructions
A vendor-independent structure of data records with diagnostics information applies. The
following instructions are available for determining the system diagnostics of a device:
Table 5- 1 Instructions for determining the system diagnostics
Instruction Description
RDREC
Reads data records of a component (module or submodule) of a DP slave/IO device that may
•
contain error information
Works asynchronously, which means processing takes place across several calls
•
RALRM
Reads the start information of the OB when calling the diagnostics interrupt OB (OB 82)
•
Provides information on cause and location of error
•
DPNRM_DG
Reads the current diagnostics data of a DP slave (DP standard diagnostics)
•
GEN_DIAG
Generates diagnostics information
•
To generate diagnostics information, the module or submodule is identified with its logical address
•
Gen_UsrMsg
Generates an alarm that is entered in the diagnostics buffer
•
GET_DIAG
Provides diagnostics information
•
To provide diagnostics information, the module or submodule is selected
•
GET_Name
Reads the name of an IO device
•
T_DIAG
Provides diagnostics and status information on a connection
•
Works asynchronously, which means processing takes place across several calls
•
RD_SINFO
Reads the start information of the OB called last that has not been processed completely and the
•
startup OB started last
Provides general error information
•
LED
Reads the status of the module LED
•
Get_IM_Data
Reads the Information&Maintenance data of the CPU
•
Works asynchronously, which means processing takes place across several calls
•
DeviceStates
Outputs the state of all devices of an IO system
•
ModuleStates
Outputs the state of all modules of a device
•
Diagnostics
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