Eliminated as of:
ECS Application OPERATING SYSTEM as of V8.3
Behaviour of the new version?
The actual position is always initialised correctly after mains connection and the Set home function using C0098 now functions correctly even in the case of multiple executions.
In particular, the actual position read in from an absolute value encoder is accepted correctly.
Which products are affected?
ECS Application OPERATING SYSTEM <= V8.0
What happens?
During initialisation after mains connection, an incorrect position is accepted under MCTRL_dnPosSet_p. As a result, the reference for the target positions no longer matches the mechanics (home position).
When does the problem occur?
During initialisation after mains connection, if the 'Set home' function has been executed at least twice in the preceding operating phase (mains ON) by writing a value to code C0098.
Diagnostics options?
Check the actual position after mains switching if the Set home function has been executed at least twice previously.
Short-term measures/recommendations?
Following mains connection, only execute the Set home function once or reinitialise by performing mains switching before executing the function for a second time.
Evaluation:
The incorrect initialisation of the actual position on mains connection causes incorrect destinations to be approached when positioning is carried out subsequently. This affects the machine accordingly, e.g. mechanical limit switches are approached.
Under normal operating conditions, the Set home function is mostly only executed once after the machine has been switched on. Therefore, in practice, the problem described will not be relevant or will at most occur during testing or commissioning.
CR Id: LDS00024711, Failure Report Id: 8722
CR Id: LDS00021867, Failure Report Id: 8007
Published with Service Message No. 2010/32
