Resu Asub (Cc_Resu_Asup.spf); Retrace Support - Siemens sinumerik 840D sl Function Manual

Detailed description

2.5 Retrace support

2.4.5

RESU ASUB (CC_RESU_ASUP.SPF)

The RESU-specific ASUB CC_RESU_ASUP.SPF is required internally by the function. The
ASUB is initiated if the following RESU interface signal is switched over in the NC STOP
state:
DB21, ... DBX0.1 (Forward/Reverse)
CC_RESU_ASUP.SPF has the following content:
PROC CC_RESU_ASUP
M17
Note
CC_RESU_ASUP.SPF must not be changed.
2.5 Retrace support
Meaning
Retrace support refers to the entire operation: from initiation of retracing to the subsequent
interface signal and to the continuation of the part program processing of the programmed
contour:
DB21, ... DBX0.2 = 1 (start retrace support)
Requirements
In order for retrace support to function, the retrace mode, launched by means of the request
for reverse travel, must be active in the channel:
• DB21, ... DBX32.1 == 1 (retrace mode active)
See Figure "Signal chart" in Subsection "Functional sequence", signal characteristics
between points 1 to 3.
26
; siemens system asub - do not change
G4 F0.001
M0
REPOSA
Special functions: Retrace Support (TE7)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0