GSK 980TC3 Series, Руководство пользователя

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Chapter 5 PLC Functional Code
51
Ⅰ
Programming
Data length
specification
Format
specification
0 0
0
：
Constant
1
：
Address
1
：
1 byte length data
2
：
2 bytes length data
Fig. 5-30-2
S1
：
Address containing the augend
S2
：
Length specification determines the format of the addend.
S3
：
Specify the address to contain the result of output operation.
Output:
W=0
：
Operation correct.
W=1
：
Operation incorrect.
When W=1, the result of addition exceeds the specified data length.
5.31 SUB
（
Binary Subtraction
）
Function:
This instruction executes the subtraction operation in the binary format of 1 or 2 bytes. In the
operation result register, operation data is set besides the numerical data representing the operation.
A required number of bytes is necessary to store the subtrahend, and the result.
Format:
SUB
RST
ACT
Length1
Format
specification
S1
Menuemd
address
S2
subtrahend
(address or
constant )
S3
Operation
result
output
address
（
W
）
Fig. 5-31-1
Control conditions:
Reset (RST) ：
RST=0
：
Release reset.
RST=1
：
Reset. W=0.
Activation instruction (ACT)
：
ACT ＝ 0 ： Do not execute SUB. W does not change.
ACT
＝
1
：
Execute SUB.
Parameter: