Instruction 31- addition with carry – Maple Systems MAPware-7000 User Manual
Page 65
57
MAPware-7000 Ladder Logic Guide
1010-1041 rev. 00
Instruction 31- Addition with carry
Expression:
Space Requirement: 1 line x 6 column Location Requirement: Middle, Right rail
Function:
When the input is ON, the data of A, B and the carry flag (CF = S976) are added, and the result is
stored in C. If the carry occurs in the operation, the carry flag is set to ON. If the result is greater
than 32767 or smaller than -32768, the output is turned ON.
This instruction is used to perform unsigned addition or double-length addition.
Execution Condition:
Input
Operation
Output
ERF
OFF
No execution
OFF
---
Normal
No Carry
OFF
Reset
ON
Execution
Carry Occurred
OFF
Set
Overflow/
No Carry
ON
Reset
Underflow Carry Occurred
ON
Set
Operand:
Coil or Bit
Register
Constant
Index
Name
X
Y B
S
T.
C.
M
X
W
Y
W
B
W
S
W
T C
D
I
J
K
M
W
A
Augend
√
√
√
√
√ √
√
√
√
√
√
√
B
Addend
√
√
√
√
√ √
√
√
√
√
√
√
C
Sum
√
√
√
√ √
√
√
√
√
Example: