6 Application Instructions API 00-49
DVP-PLC Application Manual
6-47
API Mnemonic Operands Function
31
D ROL P
Rotation Left
Controllers
ES/EX/SS SA/SX/SC EH/SV
Bit Devices Word Devices Program Steps Type
OP
X Y M S K H KnX KnY KnM KnS T C D E F
D
* * * * * ***
n * *
ROL, ROLP: 5 steps
DROL, DROLP: 9 steps
PULSE 16-bit 32-bit
ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV
Operands:
D: Device to be rotated n: Number of bits to be rotated in 1 rotation
Explanations:
1. If D is used in device F, only 16-bit instruction is applicable.
2. If D is designated as KnY, KnM, and KnS, only K4 (16-bit) and K8 (32-bit) are valid.
3. Range of n: K1 ~ K16 (16-bit); K1 ~ K32 (32-bit)
4. See the specifications of each model for their range of use.
5. Flag: M1022 (carry flag)
6. This instruction rotates the device content designated by D to the left for n bits.
7. This instruction adopts pulse execution instructions (ROLP, DROLP).
Program Example:
When X0 = Off→On, 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
After one rotation
to the left
Carry
flag
Carry
flag
D10
D10
lower bit
lower bit
higher bit
higher bit
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