Basic Instructions
2 − 130
Precautions during programming
If the system register is not set to the addition input or subtraction
input for this instruction, an operation error occurs. Set the system
register to the addition or subtraction input in advance. When the
addition/subtraction input setting is specified even if the setting has
been already done, an operation error does not occur.
Executing this instruction does not rewrite the contents of the
system ROM in the control unit. As a result, turning the power
supply off and then on again rewrites the contents of the system
registers specified by the tool software.
We recommend using differential execution with this instruction.
When UP or DOWN has been specified, the contents of the system
registers change in accordance with the specification, so a
verification error may occur in some cases, when the program is
verified. When BOTH has been specified, the contents of the
system registers do not change.
For No. 1 and No. 2 keywords, input 12 letters after “M” aligning to the
right. Separate No.1 and No.2 keywords with a comma ”,” and do not
use spaces. An operation error will occur.
[Example] If inputting (SYS1, M COM1, WAIT2)
Input => M
COM1,WAIT2
Input a space after “M” to be 12 letter aligning to the right.
Flag conditions
・Error flag (R9007): Turns on and stays on when:
・Error flag (R9008): Turns on for an instant when:
− Any character other than a keyword is specified
− There is no comma between No. 1 and No. 2 keywords
− The small letter of the alphabet is used to specify the keyword
− The system register is set to items other than the addition input or
subtraction input.
FPΣ/FP−X/FP0R
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