Maple Systems MAPware-7000 - Manual (Page 111)

103 MAPware-7000 Ladder Logic Guide
1010-1041 rev. 00
Instruction 63- 1 bit rotate left
Expression:
Space Requirement: 1 line x 3 column Location Requirement: Middle, Right rail
Function:
When the input is ON, the data of register A is rotated 1 bit to the left (MSB direction). The
pushed out bit state is stored in the right most bit (LSB) and in the carry flag (CF = S976). After
the operation, if the left most bit (MSB) is ON, the output is turned ON.
Execution Condition:
Input Operation Output CF
OFF No execution OFF ---
ON Execution When MSB = 1 ON Set or Reset
When MSB = 0 OFF Set or Reset
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
Operation
Data
√ √ √ √ √ √ √ √ √ √
Example:
When X008 is changed from OFF to ON, the data of BW15 is rotated 1 bit to the left.
The figure below shows an operation example.