# ID 20442

Channel parameters: Recursive master-slave assignment is not permitted.
Description | During start-up, the check of the channel parameters detects that, in the default coupling group 0 (zero), an axis is defined both as a master axis P-CHAN-00037 and as a slave axis P-CHAN-00038 in different coupling pairs.
Response | Class | 1 | Start-up of the control is continued.
Solution | Class | 1 | During start-up in case of conflict the master-/slave axes pair with the recursive master-/slave axes linking is skipped and the start-up is continued. A master axis P-CHAN-00037 must always remain the master axis within a coupling group in different coupling pairs.

Note:

Possibly not the complete number of configured master-/slave axes pairs of the channel parameter list is available after start-up in the channel!

Parameter | %1: | Current value [-]
Index of the first master-/slave axes pair
%2: | Current value [-]
Index of the second master-/slave axes pair
%3: | Logical axis number [-]
Axis number of the invalid configured master axis
Error type | 2, Error message by data transfer from parameter list into control device.