Homing Sequence And Parametrisation - Festo CPX Series Manual

3. Drive functions

3.2.3 Homing sequence and parametrisation

Overview of parameters involved (see also section 5.4.12)
Parameters involved
Start (FHPP)
Acknowledgement
(FHPP)
Tab. 3/13: Parameters involved in homing
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
The drive references with respect to a stop (or the current
actual position).
Sequence (does not apply to referencing at the actual
position):
1. Reset the homing status to Homing not executed".
2. Search for the reference point (mechanical stop).
3. Wait for standstill for 500 ms. Afterwards, the pressurized
cylinder chamber must have a chamber pressure measur
ing at least 2/3 of the set operating pressure.
4. Determine the axis zero point/cylinder zero point by
setting the corresponding offset to the reference point
(current position = 0 + project zero point offset).
5. After reaching the stop, the CMAX sets the status
SPOS.REF = 1. The end of homing is signalised afterwards
with SPOS.MC.
Description
Axis zero point offset
Homing method (permissible: −18, −17, 35)
Homing speed
CPOS.HOME = positive edge: Start homing
SPOS.ACK = positive edge: Acknowledge Start
SPOS.MC = 1: Movement completed
SPOS.REF = 1: Drive referenced
PNU
1130
1131
1132
3−37