Beckhoff TwinCAT 3 (XAR/XAE) with EtherCAT fault AL 0x001D: Invalid output configuration
Beckhoff: the SyncManager configuration for output process data is invalid. Raised on P→S (and in SAFEOP/OP), resulting state SAFEOP + error; the slave does not reach OP.
Diagnose this with AI
Try Free PLC Fault Diagnostic Upload a keypad photo, the fault history or a parameter export from your Beckhoff TwinCAT 3 (XAR/XAE) with EtherCAT. InduQT compares the evidence and suggests the next useful checks.
When it happens
- At EtherCAT startup on the transition PREOP to SAFEOP
- After a device was replaced or its process data were edited
Likely causes and checks
1Configured device revision or ESI differs from the installed device
- Points to it
- Fault after a device swap or firmware update; online scan shows a different revision.
- Check
- Compare the configured and found device (vendor, product code, revision) with an online scan.
2Output process data edited to a combination the device does not support
- Points to it
- Fault after changes on the Process Data tab.
- Check
- Restore the default PDO selection from the ESI and re-apply only documented options.
Telling it apart
- 0x001D is the output side (SM2), 0x001E the input side (SM3); 0x0025/0x0024 are the PDO mapping for outputs/inputs rather than the SyncManager setting.
Evidence to collect
- Logger export with the AL status code
- Process Data tab screenshot (SM and PDO assignment)
- Online scan result: vendor, product code, revision of the device
- ESI file version used in the project
Work on fuel trains, burners, pressure vessels and electrical equipment must be done by qualified personnel following the manufacturer’s documentation and local codes. Never bypass a safety device or interlock.
Related
- Beckhoff TwinCAT 3 (XAR/XAE) with EtherCAT AL 0x001E: Invalid input configuration
- Beckhoff TwinCAT 3 (XAR/XAE) with EtherCAT AL 0x0024: Invalid input mapping
- Beckhoff TwinCAT 3 (XAR/XAE) with EtherCAT Slave not in OP: EtherCAT slave stuck in INIT, PREOP or SAFEOP
- All Beckhoff TwinCAT 3 (XAR/XAE) with EtherCAT fault codes