Working Area Limitation In Wcs/Szs (Walcs0 - Siemens SINUMERIK 840Di sl Programming Manual

Note
If transformations are active, then tool data are taken into consideration (tool length and tool
radius) can deviate from the described behavior.
References:
/FB1/Function Manual, Basic Functions; Axis Monitoring, Protection Zones (A3),
Chapter: "Monitoring the working area limitation"
Programmable working area limitation, G25/G26
An upper (G26) and a lower (G25) working area limitation can be defined for each axis.
These values are effective immediately and remain effective for the corresponding MD
setting (→ MD10710 $MN_PROG_SD_RESET_SAVE_TAB) after RESET and after being
powered-up again.
Note
The CALCPOSI subroutine is described in the Job Planning Programming Manual Using this
subroutine before any traversing motion is made, it can be checked as to whether the
predicted path is moved through taking into account the working area limits and/or the
protection zones.
3.9 Working area limitation in WCS/SZS (WALCS0 ... WALCS10)
Function
In addition to the working area limitation with WALIMON (refer to "Working area limitation in
BCS") there is an additional working area limitation that is activated using the G commands
WALCS1 - WALCS10. Contrary to the working area limitation with WALIMON, the working area
here is not in the basis coordinate system, but is limited coordinate system-specific in the
workpiece coordinate system (WCS) or in the settable zero system (SZS).
Using the G commands WALCS1 - WALCS10, a data set (working area limitation group) is
selected under the up to 10 channel-specific data sets for the coordinate system-specific
working area limitations. A data set contains the limit values for all axes in the channel. The
limitations are defined by channel-specific system variables.
Application
The working area limitation with WALCS1 - WALCS10 ("Working area limitation in the
WCS/SZS") is mainly used for working area limitations for conventional lathes. They allow
the programmer, to use the defined "end stops" - when moving the axis "manually" to define
a working area limitation referred to the workpiece.
Fundamentals
Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
3.9 Working area limitation in WCS/SZS (WALCS0 ... WALCS10)
Positional Data
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