3. Instruction Set
3-93
API Mnemonic Operands Function
32
D RCR P Rotation Right with Carry
Controllers
ES2/EX2 SS2 SA2
SE SX2
Bit Devices Word devices Program Steps Type
OP X Y M S K H KnXKnY KnM KnS T C D E F
D ** * * * ***
n * *
RCR, RCRP: 5 steps
DRCR, DRCRP: 9 steps
PULSE 16-bit 32-bit
ES2/EX2 SS2 SA2
SE SX2 ES2/EX2 SS2 SA2
SE SX2 ES2/EX2 SS2 SA2
SE SX2
Operands:
D: Device to be rotated n: Number of bits to be rotated in 1 rotation
Explanation:
1. This instruction rotates bit status of the device D together with M1022 to the right for n bits.
2. The status of the last bit rotated (marked with ※) is moved to the carry flag M1022.
3. This instruction is generally used in pulse execution mode (RCRP, DRCRP).
4. If operand D uses index F, only a 16-bit instruction is available.
5. If operand D is specified as KnY, KnM or KnS, only K4 (16-bit) or K8 (32-bit) is valid.
6. Valid range of operand n: 1≤ n ≤16 (16-bit), 1≤ n ≤32 (32-bit)
Program Example:
When X0 goes from OFF to ON, the 16 bits (4 bits as a group) in D10 together with carry flag
M1022 (total 17 bits) will rotate to the right, as shown in the figure below. The bit marked with ※
will be moved to carry flag M1022
00011100 01001 001
10001100111000 0 0
1
X0 D10 K4
Rotate to the right
16 bits
Carry
flag
Carry
flag
After one rotation
to the right Lower bit
Lower bit
Upper bit
Upper bit
1
D10
D10
RCRP
M1022
M1022