13 | Diagnostics
STOBER
198
02/2019 | ID 442728.05
13.3.18 Event 51: Virtual master limit switch
The possible effects depend on the configured level (U24).
§
0: Inactive
§
1: Message
§
3: Fault
The drive controller is interrupted if:
§
A29 = 0: Inactive for STOBER device controller
or
§
A540 = 0: disable drive, motor is free to rotate for CiA device controller
Response:
§
The power unit is disabled and axis movement is no longer controlled by the drive controller
§
The brakes are no longer controlled by the drive controller and engage in the event of an
inactive release override (F06)
The drive controller is interrupted with a quick stop if:
§
A29 = 1: Active for STOBER device controller
or
§
A540 = 2: slow down on quick stop ramp for CiA device controller
Response:
§
The axis is stopped by a quick stop; meanwhile, the brakes are controlled by the drive
controller and remain released
§
At the end of the quick stop, the power unit is disabled and axis movement is no longer
controlled by the drive controller; the brakes are no longer controlled by the drive controller
and engage in the event of an inactive release override (F06)
Number
Cause
Check and action
1: SW-limit switch positive
–
2: SW-limit switch negative
End of the travel range
reached
Move in the travel range in the direction
opposite the limit switch
Travel range too small
Check the positions of the software limit
switch and correct them if necessary
(G146, G147)
3: +/- 31 bit computing limit
reached
Computing limit of the data
type reached
Check the command sequences for
multiple successive commands without
a breakpoint 3: MC_MoveAdditive and
the number of decimal places of the axis
model and reduce them if necessary
(G46)
Tab. 201: Event 51 – Causes and actions
