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Main Controller: 25x500 Segment Programmable |
Chapter 7
Call
A CALL segment is only available when single programmer mode is configured. CALL
segments may only be selected in instruments offering multiple program storage.
The CALL segment allows programs to be nested within each other.
To prevent re-entrant programs from being specified, only higher number programs may
be called from a lower program.
i.e., program 1 may call programs 2 through 50, but program 49 may only call program
50.
When a CALL segment is selected, the operator may specify how many cycles the called
program will execute. The number of cycles is specified in the calling program. If a called
program has a number of cycles specified locally, they will be ignored.
A CALL segment will not have a duration, a CALL segment will immediately transfer
execution to the called program and execute the first segment of that program.
Called programs do not require any modification, the calling program treats any END
segments as return instructions.
The example shows Prog 50 (Ramp/Dwell/Ramp) inserted in place of segment
3/Program1.
Prog 50 can be made to repeat using the 'Cycles' parameter.
End
A program may contain one End segment. This allows the program to be truncated to the
number of segments required.
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