Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 530

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), excluding the carry
flag (SM700). The carry flag (SM700) is on or off depending on the status prior to the execution of the ROR(P) instruction.
b15 b14 b13 b12 b11 b10 b9
(d) 0 0 0 0 0
b15 b14 b13 b12 b11 b10 b9
1 0 0 0 0
(d)
Value of b0
b15 b14 b13 b12 b11 b10 b9
(d) 0 1 0 0 0
Value of b0
b15 b14 b13 b12 b11 b10 b9
(d)
Value of b((n)-1)
• When (d) is a bit device, bits are rotated to the right within the device range specified by digit 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 INSTRUCTIONS
528
7.1 Rotation Instructions
b8 b7 b6 b5 b4 b3 b2 b1
0 0 0 0 0 0 0 0
Right rotation by 1 bit
b8 b7 b6 b5 b4 b3 b2 b1
0 0 0 0 0 0 0 0
Right rotation by 1 bit
b8 b7 b6 b5 b4 b3 b2 b1
0 0 0 0 0 0 0 0
Right rotation by (n) bits
b8 b7 b6 b5 b4 b3 b2 b1
SM700
b0
1 0 1 0
SM700
b0
0 1 0 1
Value of b0
SM700
b0
0 0 1 0
Value of b0
SM700
b0
Value of b((n)-1)