Function library
7-51
L
EDSVS9332P-D21 EN 3.0
7.5.8.3 Referencing status (POS-REF-OK)
The referencing status is indicated via the function block output “POS-REF-OK” and displayed under
C1284.
The referencing status is displayed as ”Reference known” when the measuring systems have a
defined reference to the machine. Absolute positioning
(E 7-37)
or
(E 7-38)
is only possible after a
defined reference has been created.
The output POS-REF-OK is set by
•
homing is completed,
•
the program function “Set reference” is set,
•
the absolute value encoder is selected as position feedback (C0490 = 4).
•
Set Fb input POS-ABS-SET = 1.
•
C1210 = 2 (absolute positioning with saving)
The output POS-REF-OK is reset by
•
Start of homing
•
Description of the following codes:
– C0011 (Nmax)
– C0490 (feedback system for the position controller)
– C1202 (Gearbox factor, numerator)
– C1203 (Gearbox factor, denominator)
– C1204 (Feed constant)
– C1207/1(Position encoder gearbox factor, numerator)
– C1207/2 (Position encoder gearbox factor, denominator)
– C1210 (Positioning mode)
•
The following errors occur:
– NMAX (limit speed of C0596)
– P12 (encoder limit exceeded)
– SD2 (resolver error) if resolver has been selected as position feedback system (C0490=0),
SD7 (absolute value encoder).
•
In relative positioning mode (C1210=1) if Prg-reset is carried out during a running positioning
process.
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