DiagnosisΒΆ
In addition to the user data transportation, ETHERCAT provides a wide range of diagnostic functions, which can be useful for system activating. The upcoming diagnostic events from the ETHERCAT slaves are centralized in the master and can be displayed by using several function blocks. Localization of failures is greatly simplified with this function.
ETHERCAT Function Block Library
The function block library EtherCAT_AC500_V13.lib (since firmware version 1.3.0) EtherCAT_Library: ETHERCAT LibraryETHERCAT Communication Module and connected ETHERCAT slaves. These function blocks can be embedded additionally, especially for the initial operation.
ETHERCAT Status and Diagnosis via Function Blocks
The ETHERCAT status messages can be requested by the following function blocks:
| Function Block Name | Function |
|---|---|
| ECAT_STATE: ECAT_STATE | Common information about the status of the ETHERCAT bus |
| ECAT_BUS_DIAG: ECAT_BUS_DIAG | Information about the status of all bus participants |
| ECAT_GET_DCLK_DEVI: ECAT_GET_DCLK_DEVI | Information about the distributed clock of every slave |
A detailed function block description is in the document The ETHERCAT Library.
ETHERCAT Slave Diagnosis via Function Blocks
Status and error messages, which describe the slave state, are requested via the ECAT_SLV_DIAG function block:
| Function Block Name | Function |
|---|---|
| ECAT_SLV_DIAG: ECAT_SLV_DIAG | Representation of diagnosis messages of connected slaves |
Device Revision
Hardware and firmware revision can be queried using the ECAT_SOE_READ: ECAT_SOE_READ
- HW-Revision (WORD) is stored in the first 2 bytes,
- SW-Revision (1 CHAR plus 3 x BYTE, e. g. V.1.2.3)
Online Diagnosis
The online diagnosis in Automation_Builder software is only available by using special function blocks Diagnosis.