Delta DVP-10PM, Руководство по применению

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5
Categories and Use of Basic Application Instructions
DVP-PM Application Manual 5-133
API Mnemonic Operands Function
154 D RAND P Random number
Controllers
20PM 10PM
Bit Devices Word devices Program Steps
Type
OP
X Y M S K H KnX KnY KnM KnS T C D V Z
S
1
* * * * * * * * * * *
S
2
* * * * * * * * * * *
D * * * * * * * *
RAND, RANDP: 7 steps
DRAND, DRANDP: 13 steps
Operands:
S
1
: Lower bound of the random number
S
2
: Upper bound of the random number
D
: Operation result
Explanations:
1. The range of 16-bit operands
S
1
,
S
2
: K0
≦
S
1
,
S
2
≦
K32,767; the range of 32-bit operands
S
1
,
S
2
: K0
≦
S
1
,
S
2
≦
K2,147,483,647.
2. Entering
S
1
>
S
2
will result in operation error. The instruction will not be executed at this time, M1067, M1068 =
ON and D1067 records the error code 0E1A (HEX)
3. When RAND is used as 16-bit instruction, Z device cannot be adopted; when RAND is used as 32-bit
instruction, V device cannot be adopted.
4. 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)
Program Example:
When X10 = ON, RAND will produce the random number between the lower bound D0 and upper bound D10 and
store the result in D20.
X0
RAND D0 D10 D20