A7470 alarm in siemens sinamics V90 drive indicates the EPOS Traversing block target position is outside the positive software limit. This means the commanded block would drive the axis past its safe positive boundary.
Cause: In the traversing block the specified absolute target position lies outside the range limited by the software limit switch plus.
Remedy:
- Correct the traversing block.
- Change software limit switch plus (p2581).
