Yaskawa Ladder Works Programming Manual - Manual (Page 26)

2.5 EXTENDED SUBTRACTION Instruction (SUBX)
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2.5 EXTENDED SUBTRACTION Instruction (SUBX)
[Outline]
The SUBX instruction subtracts integer values. No operation error occurs, even if the operation
results in an underflow.
[Format]
Symbol : SUBX
Full Name : Expanded Subtract
Category : MATH
Icon :
[Parameter]
Parameter Name Setting
Source A · Any integer type and double-length integer type register
· Any integer type and double-length integer type register with subscript
· Subscript register
· Constant
Source B · Any integer type and double-length integer type register
· Any integer type and double-length integer type register with subscript
· Subscript register
· Constant
Dest · Any integer type and double-length integer type register (except for # and
C registers)
· Any integer type and double-length integer type register with subscript
(except for # and C registers)
· Subscript register
[Program Example]
This instruction is used in cases where it is desirable that operation errors do not occur in the
subtraction of integer type values.
Notes: In the case of double-length integer type values, an operation using addition and
subtraction instructions (+, –, ++, --) will be a 32-bit operation. However, when an
addition or subtraction instruction is used in a remainder correction operation (where a
multiplication instruction (×) is the immediately preceding instruction and a division
instruction (÷) is the immediately subsequent instruction), the operation will be a 64-bit
operation.