7 I/O Allocations and Program
7.1
I/O No.
-
I/O No.
Note: *
Install the thermocouple unit on the right side of other expansion unit. If it is installed on the
left side, the total precision will deteriorate.
*
In case of 3 expansion unit (1 of which is the Thermocouple Unit): Mount the Thermocouple
Unit in the place of Expansion Unit, 3.
*In case of 3 expansion unit (2 of which is the Thermocouple Unit): Mount the Thermocouple
Unit in the places of Expansion Units, 2 and 3.
- The data from each channel is assigned as the I/O data to the data registers below when the A/D Converter
Unit is installed in the above unit configuration;
Thermocouple Unit
input channel
Expansion Unit, 1
Expansion Unit, 2
Expansion Unit, 3
CH0, 2, 4, 6
WX2
WX4
WX6
CH1, 3, 5, 7
WX3
WX5
WX7
- Example of the I/O allocations
The converted data for channels when the Thermocouple Unit is installed in the Expansion Unit, 1 and its
assignment to WX2 and WX3
A1 A0
WX3
WX2
0
0
CH1 data
CH0 data
0
1
CH3 data
CH2 data
1
0
CH5 data
CH4 data
1
1
CH7 data
CH6 data
X
3
F
X
3
E
X
3
D
X
3
C
X
3
B
X
3
A
X
3
9
X
3
8
X
3
7
X
3
6
X
3
5
X
3
4
X
3
3
X
3
2
X
3
1
X
3
0
WX3 WX2
X
2
F
X
2
E
X
2
D
X
2
C
X
2
B
X
2
A
X
2
9
X
2
8
X
2
7
X
2
6
X
2
5
X
2
4
X
2
3
X
2
2
X
2
1
X
2
0
bit F
bit 0
bit F
bit 0
A
1
A
0
Conversion data switch flag
Converted data for CH 0, 2, 4 and 6
(signed 16-bit data)
Converted data for CH1, 3 ,5 and 7
(signed 14-bit data)
9
