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04.97
2.2.2
Feed axes in the traversing program
If the axis is used as a feed axis, the traversing block must contain exclusively the information
of this one feed axis. Furthermore, the traversing program must be started in this axis.
If two or three feed axes are operated, these must be supplied in separate channels, i.e. with
their own traversing programs, with the exception of permanent synchronism (see channel
structure, example a).
2.2.3
Synchronism in the traversing program
Axes as well as feed axes can be operated in permanent synchronism. The coupling of the
axes is not effected by the traversing program, but through machine data. The machine data
determine which axis is the master axis and which is the slave axis for the synchronism. Only
the master axis has to be programmed in the traversing program. The slave axes "follow"
automatically.
2.2.4
Coordination of the control signals in the traversing program
As the master axis is the coordinating axis, program preselection and start are effected in this
axis. In addition, the operating mode "automatic" or "single block" must be preset in the
master axis. To operate the slave axes contained in the traversing program as slave axes, they
must be switched to the "slave" operating mode, otherwise the WF 723 C will not start
program execution.
For further details on the operation of the control signals, see the
description of functions, chapter "control and acknowledgment signals"
and the operating mode "automatic, single block and slave".
2.2.5
Memory capacity
Up to 200 programs or subroutines can be stored at the same time in the program memory.
The sum of traversing blocks must not exceed 1000 for S5 format. One traversing block in DIN
format may consist of several traversing blocks in S5 format.
2.2.6
Program number / Subroutine number
The figures 1 to 200 are possible program or subroutine numbers.
©
Siemens AG 1997 All Rights Reserved
WF 723 C (Programming Guide)
6ZB5 440-0VU02
Basic Definitions
2 – 3
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