Delta DVP-10PM, Applications Manual

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5
Categories and Use of Basic Application Instructions
DVP-PM Application Manual 5-49
API Mnemonic Operands Function
31 D ROL P Rotate Left
Controllers
20PM 10PM
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
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 M1970.
3. This instruction is generally used in pulse execution mode (ROLP, DROLP).
4. When BMOV is used as 16-bit instruction, Z device cannot be adopted; when BMOV is used as 32-bit
instruction, V device cannot be adopted.
5. When specifying the bit device of KnX(Y/M/S), the starting No. should be a multiple of 16 in octal or decimal
format. For example, K1X0, K4Y20 (octal); K1M0, K4S16 (decimal).
6. If operand
D
is specified as KnY, KnM or KnS, only K4 (16-bit) or K8 (32-bit) is valid.
7. 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 M1970.
X0
D10 K4
1 1 1 1 1 1 0 0 0 0 0 1 1 0 0 0
1 1 0 0 0 0 0 1 1 0 0 1 1 0 1 1 1
16 bits
Rotate to the left
After one rotation
to the left
Carry
flag
Carry
flag
D10
D10
Upper bit
Upper bit
Lower bit
Lower bit
ROLP
M1022
M1022