Delta Electronics AH500 Manual page 230

API Instruction code
202 SCAL
Device X Y M
S
1
S
2
S
3
D

E xp la nat io n







E xamp le 1

5 - 11 5
Operand
P
S , S
1
S K 16# F
 
 
 
Pulse instruction 16-bit instruction (7 steps) 32-bit instruction
S : Source device; S : Slope (Unit: 0.001); S
1 2
device
The values in S , S , and S
1 2
Equation: D=(S ×S )÷1000+S
1 2
To obtain the value in S
round the result to the nearest integer, and get a 16-bit integer. To obtain
the value in S , the users have to use the offset equation below, round
3
the result to the nearest integer, and get a 16-bit integer.
Slope equation: S =[(Maximum destination value–Minimum destination
2
value)÷(Maximum source value–Minimum source value)]×1,000
Offset equation: S = Minimum destination value–Minimum source
3
value×S ÷1,000
2
Output curve
Minimum source value
Suppose the values in S
When X0.0 is ON, the instruction SCAL is executed, and a scale is
stored in D0.
Equation: D0=(500×168)÷1000+(-4)=80
X0.0
Ch ap te r 5 Ap plie d Instruc tions
, S , D
2 3
KnM KnS D W
 
 
 
 
 
: Offset; D: Destination
3
must be in the range of -32767 to 32767.
3
3
, users have to use the slope equation below,
2
Destinati on value
Maximum destination value
D
S
Maximum sourc e value
1
Minimum des tination value
, S , and S are 500, 168, and -4 respectively.
1 2 3
SCAL
K500 K 168
Function
Scale
T C V Z
–
Sourc e value
K -4 D0