Delta AH500 - 8.2 Dimensions and Profile; 8.2.1 Dimensions

AH500 Programming Manual
6-98
API Instruction code Operand Function
0216 SCAL P
S
1
, S
2
, S
3
, D
Scale value operation
Device
X Y M S T C HC D L SM SR E PR K 16# “$” DF
S
1
          
S
2
          
S
3
          
D
        
Pulse instruction
16-bit instruction (9 steps)
32-bit instruction
AH500 AH500
－
Symbol:
S
1
：
Data source Word
S
2
：
Slope Word
S
3
：
Offset Word
D
：
Destination device Word
Explanation:
1. The operation equation in the instruction: D=(S
1
×S
2
)÷1,000+S
3
2. To obtain the values in S
2
and S
3
, users have to use the slope equation and the offset equation
below first, and then round off the results to the nearest whole digit. The final 16-bit values are
entered into S
2
and S
3
.
The slope equation: S
2
=[(Maximum destination value–Minimum destination value)÷(Maximum
source value–Minimum source value)]×1,000
The offset equation: S
3
=Minimum destination value–Minimum source value×S
2
÷1,000
The output curve is as shown below:
Example 1:
1. Suppose the values in S
1
, S
2
, and S
3
are 500, 168, and -4 respectively. When X0.0 is ON, the
instruction SCAL is executed, and the scale value is stored in D0.