Omron SYSMAC CS Series Instruction & Reference Manual page 639

Function
SBS(091) calls the subroutine with the
specified subroutine
subroutine is
between SBN(092) and RET(093). When
the subroutine is completed, program
execution continues
instruction after SBS(091).
A subroutine can be called more than
once in a program.
Subroutines can be nested up to 16
levels. Nesting
subroutine is
subroutine program, such as shown in the
following example, which is nested to 3
levels.
SBN 10
to
SBN 11
to
RET
CS/CJ/NSJ Series Instructions Reference Manual (W474)
number. The
the program section
with the next
is when another
called from within a
SBN 11 SBN 12
to
to
SBS 12
to
RET
RET
3. Instructions
Execution condition ON
Main program
Subroutine
program
(SBN(092) to
RET(093))
Program end
Execution condition ON
Main program
Subroutine
Execution condition ON
program n
Two-level
nesting
Subroutine
program m
Program end
3
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