Offset between drive position and CNC position for absolute encoders (P-AXIS-00403)

P-AXIS-00403

Offset between drive position and CNC position for absolute encoders

Description

For drives with absolute encoder, this parameter can introduce an offset between the position supplied by the drive and the internal CNC position. The position of the CNC then results from:

As soon as the drive delivers valid positions, the CNC position is set according to the equation above and the axis is marked as referenced.

When occasionally, due to external influences such as phase switching by the operator, the field bus or drive does not deliver valid actual positions, the CNC position is reinitialised as soon as the drive delivers valid positions.

Parameter

antr.abs_pos_offset

Data type

SGN64

Data range

MIN_SGN32 ≤ abs_pos_offset ≤ MAX_SGN32

Axis types

T, R, S

Dimension

T: 0.1µm

R,S: 0.0001 °

Default value

0

Drive types

Simulation, SERCOS, Lightbus, Profidrive, CANopen, Terminal *

Remarks

Using this parameter is only reasonable if the drive has an absolute encoder.

This parameter is only effective when P-AXIS-00014 is assigned the value 1.

When the used drive type does not support this parameter, a warning with number 110532 is output and P-AXIS-00403 is corrected to 0.

If an offset is changed by updating a parameter list or by the #MACHINE DATA command, the changed offset only becomes effective at the next reinitialisation of the CNC position.

*The parameter can only be used with terminal drives if the signal WC_STATE is configured in the cyclic process data. If this is not the case, warning ERR 110690 is output and P-AXIS-00403 is set to 0.