B.2.3 Calculating Specifications For The Measuring Reference System - Festo CPX Series Manual

B. Basic controlling principles

B.2.3 Calculating specifications for the measuring reference system

Point of reference
Axis zero point
Project zero point
Lower software end position
Upper software end position
Target/actual position
Tab. B/10: Calculating rules for the dimension reference system with absolute measuring
systems
Reference point
Axis zero point
Project zero point
Lower software end position
Upper software end position
Target/actual position
Tab. B/11: Calculation rules for the measuring reference system with incremental measur
ing systems
B−12
Calculation rule
= SZ + a'
AZ
= AZ + b
PZ
= AZ + d
LSE
= AZ + e
USE
= PZ + c
TP, AP
Note on absolute measuring systems
When calculating for drives with absolute encoding sensor
(only pneumatic), the axis zero point refers to the sensor zero
point (mounting offset a' instead of a) All other derived vari
ables are identical.
Calculation rule
= REF + a
AZ
= AZ + b
PZ
= AZ + d
LSE
= AZ + e
USE
= PZ + c
TP, AP
Note on incremental measuring systems
The "offset axis zero point" must always be specified as a
negative due to the definition of the axis zero point = cylinder
zero point.
= SZ + a' + b
= SZ + a' + d
= SZ + a' + e
= AZ + b + c = SZ + a' + b + c
= REF + a + b
= REF + a + d
= REF + a + e
= AZ + b + c = REF + a + b + c
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH