6F3B0250
6. Programming Information
6.6.5Subroutines
In the program type ‘Subroutine’, The following number of subroutines can be programmed.
T1 | T1S |
Up to 16 subroutines | Up to 256 subroutines |
The subroutine is not a independent program. It is called from other program types (main program,
One subroutine is started with the SUBR instruction, and ended by the RET instruction.
It is necessary to assign a subroutine number to the SUBR instruction. The available subroutine numbers are 0 to 15 for the T1, or 0 to 255 for the T1S.
¾[ SUBR (000) ]¾
Subroutine number
The RET instruction has no subroutine number.
The instruction that calls a registered subroutine is the CALL instruction. The CALL instruction has the subroutine number to be called.
¾[ CALL N.000 ]¾
Subroutine number
Main program
ú¾çú¾[ CALL N.000 ]¾¾ç
Execution
flow
Subroutine
ú¾[ SUBR (000) ]¾¾¾ç
NOTE
ú¾¾¾¾¾¾ [ RET ]¾ç
(1) Multiple subroutines can be programmed in a block. However, one subroutine in one block is recommended.
(2) In case of the T1S, other subroutines can be called from a subroutine (nesting), up to 3 levels. In the T1, nesting is not allowed.
Basic Hardware and Function 115
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