Delta AH500 - Page 473

Chapter 6 Applied Instructions
6-305
value in D should be within the range described below.
 If the instruction ZONE is executed, the negative deviation in S
1
, the positive deviation in
S
2
, the input value in S
3
, and the output value in D is within the range between -32768
and 32767. Suppose the negative deviation in S
1
is -100 and the input value in S
3
is
-32768. The output value in D is calculated as follows.
Output value in D=(-32768)+(-100)=16#8000+16#FF9C=16#7F9C=32668
 If the instruction DZONE is executed, the negative deviation in S
1
, the positive deviation
in S
2
, the input value in S
3
, and the output value in D is within the range between
-2147483648 and 2147483647. Suppose the negative deviation in (S
1
+1, S
1
) is -1000
and the input value in (S
3
+1, S
3
) is -2147483648. The output value in (D+1, D) is
calculated as follows.
Output value in (D+1, D)
=-2147483648+(-1000)=16#80000000+16#FFFFFC18=16#7FFFFC18=2147482648
Example 1:
When X0.0 is ON, -100 or 100 is added to the binary-coded decimal value in X1, and the sum is
stored in D10.
The execution results:
Negative
deviation
Positive
deviation
Input value in
D0
Function
Output value in
D10
-100 100
-10
D0<0=>D10=(-10)+(-100)
-110
0
D0=0=>D10=0
0
50
D0>0=>D10=50+100
150
Example 2:
When X0.0 is ON, -10000 or 10000 is added to the binary-coded decimal value in (X2, X1), and the
sum is stored in (D11, D10).