8. MICROCOMPUTER MODE
8 − 3
MELSEC-A
(2) Calling the utility program
Call the utility program from the sequence program as described below:
For further information, see the corresponding utility program operating manual.
Call the head address o
the utility program using
the SUB instruction.
Specify input data in an
word device (D, W, R)
Specify the data required for program run, device number fo
storing the operation result, etc. in any word device.
……
Specify the head device
number storing the in-
put data in D9090.
The head device number storing the input data should be
specified in D9090 before calling the utility program be-
cause D9090 is read to check the input data location when
the utility program is executed.
……
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