DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
3-92
API Mnemonic Operands Function
31
D ROL P Rotate Left
Controllers
ES2/EX2 SS2 SA2
SE SX2
Bit Devices Word devices Program Steps Type
OP X Y M S K H KnX KnYKnM KnS T C D E F
D * * * * * ***
n * *
ROL, ROLP: 5 steps
DROL, DROLP: 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 to the left for n bits
2. The status of the last bit rotated (marked with ※) is copied to the carry flag M1022.
3. This instruction is generally used in pulse execution mode (ROLP, DROLP).
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, all the 16 bits (4 bits as a group) in D10 will rotate to the left, as
shown in the figure below. The bit marked with ※ will be sent to carry flag M1022.
X0 D10 K4
111 11 100 0 0011 000
11000001100110111
16 bits
Rotate to the left
A
fter one rotation
to the left
Carry
flag
Carry
flag
D10
D10
Upper bit
Upper bit Lower bit
Lower bit
ROLP
M1022
M1022