Mitsubishi Electric FX3G SERIES Programming Manual page 672

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
2. 32-bit operation (DZONE and DZONEP)
The bias value specified by [
], and output to the device specified by [
S
3
The bias value is added as shown below:
Command
input
In the case of "Input value < 0" ..................................Input value
In the case of "Input value = 0" ...........................................................................................0 → Output value
In the case of "Input value > 0" ..................................Input value
Caution
• When the output value overflows, it is handled as follows:
- In the 16-bit operation
The operation result is a 16-bit binary value with sign. Accordingly, if the output value is outside the range from
-32768 to +32767, it is handled as follows:
Negative bias value
Input value
- In the 32-bit operation
The output value is a 32-bit binary value with sign. Accordingly, if the operation result is outside the range from
-2,147,483,648 to +2,147,483,647, it is handled as follows:
Negative bias value [
Input value [
670
S +1, S
1 1
FNC258
S S
1
2
DZONE
S S
+1,
3 3
S +1, S
3 3
S S
+1,
3 3
Output
value
Input
value
S
1 = -100
S
3 = -32768
S S
1 +1, 1 ] = -1000
S S
3 +1, 3 ] = -2,147,483,648
29 Data Table Operation – FNC250 to FNC269
] or [ S +1, S ] is added to the input value specified by [
2 2
+1, ].
D D
S
D
3
S S
+1, S
3 3
1
Negative bias value → Output value
+
S S
+1, S
3 3
2
Positive bias value → Output value
+
Output value
Positive bias value
[ ]
+1,
S S
2 2
Output value = -32768+(-100)
= 8000H+FF9CH
= 7F9CH
= 32668
Output value = -2,147,483,648+(-1000)
29.3 FNC258 – ZONE / Zone Control
+1, S D +1,
1
D
+1,
+1, S D +1,
2
[ +1, ]
D D
0
Input value
[
S
3
Negative bias value
[ ]
S +1, S
1 1
= 80000000H+FFFFFC18H
= 7FFFFC18H
= 2,147,482,648
S +1,
3
D
D
D
]
+1, S
3