Siemens A01321

What the Fault Means

Alarm: Topology: Drive object number does not exist in configuration

Likely causes

• p0978 contains a drive object number that does not exist
• Alarm value (r2124, interpret decimal): Index of p0978 under which the drive object number can be determined.

Solution and Safe First Checks

1. p0978 must include all of the drive object numbers (p0101).
2. it is not permissible for a drive object number to be repeated.
3. by entering a 0, the drive objects with PZD are separated from those without PZD.
4. only 2 partial lists are permitted. After the second 0, all values must be 0.
5. dummy drive object numbers (255) are only permitted in the first partial list.

Safety: do not work inside the panel without isolating the power; if unsure, consult a qualified technician.

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