Mitsubishi MELSEC iQ-F FX5 series Programming Manual page 320

Processing details
■ROR(P)
• These instructions rotate the 16-bit binary data in the device specified by (d) to the right by (n) bit(s) (not including the carry
flag). The carry flag is on or off depending on the status prior to the execution of the instruction.
b15 b14 b13
(d) 0 0 0
b15 b14 b13
(d)
1 0 0
Value of b0
b15 b14 b13
(d)
0 1 0
Value of b0
b15 b14 b13
(d)
Value of b(n-1)
• When (d) is a bit device, bits are rotated to the right 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 15 and the specified
number of bits is 12, 3 bits are rotated because 15 divided by 12 equals 1 with a remainder of 3.
• Specify any value between 0 and 15 for (n). If a value 16 or bigger is specified, bits are rotated by the remainder value of
n16. For example, when (n) is 18, 2 bits are rotated because 18 divided by 16 equals 1 with a remainder of 2.
7 APPLICATION INSTRUCTION
318
7.1 Rotation Instruction
b12 b11 b10 b9 b8
0 0 0 0 0
Rotating 1-bit data
to the right
b12 b11 b10 b9 b8
0 0 0 0 0
Rotating 1-bit data to the right
b12 b11 b10 b9 b8
0 0 0 0 0
Rotating n-bit data to the right
b12 b11 b10 b9 b8
b7 b6 b5 b4 b3
0 0 0
0 0
b7 b6 b5 b4 b3
0 0 0 0 0
b7 b6 b5 b4 b3
0 0 0 0 0
b6 b4 b3
b7 b5
Carry flag (SM700, SM8022)
b2 b1 b0
1 0 1
0
Carry flag (SM700, SM8022)
b2 b1 b0
1
0 1 0
Value of b0
Carry flag (SM700, SM8022)
b2 b1 b0
0
0 0 1
Value of b0
Carry flag (SM700, SM8022)
b2 b1 b0
Value of b(n-1)