Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual page 382

■DRCL(P)
• These instructions rotate the 32-bit binary data in the device specified by (d) to the left by (n) bit(s) (including the carry flag).
The carry flag is on or off depending on the status prior to the execution of the instruction.
(SM700, SM8022)
b31
• When (d) is a bit device, bits are rotated to the left within the device range specified by nibble specification. The number of
bits actually to be rotated is the remainder of (n)(specified number of bits). For example, when (n) is 31 and the specified
number of bits is 24, 7 bits are rotated because 31 divided by 24 equals 1 with a remainder of 7.
• Specify any value between 0 and 31 for (n). If a value 32 or bigger is specified, bits are rotated by the remainder value of
n32. For example, when (n) is 34, 2 bits are rotated because 34 divided by 32 equals 1 with a remainder of 2.
Precautions
• Do not set a negative value to the number of bits to be rotated (n).
• In the case of continuous operation type instructions (DROL and DRCL), note that shift and rotation are executed in every
scan time (operation cycle).
Operation error
There is no operation error.
8 APPLICATION INSTRUCTION
380
8.1 Rotation Instruction
(d)+1
b30 b29 b28 b27 b18 b17 b16
Rotating n-bit data to the left
(d)
b15 b14 b5 b4 b3 b2 b1 b0