Omron CP1H-CPU - 05-2006, Руководство по эксплуатации

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436
Temperature Sensor Units
Section 7-5
Example 4
Temperature: Open circuit (
°
F)
Temperature Data: 7FFFFFFF
Note (1) Leftmost digits are stored in the lower memory addresses. Treat the data
in the lower memory address as the leftmost digits when programming.
(2) Be sure that the data is read at least once every 125 ms to allow for the
CPU Unit’s cycle time and communications time. Correct data may not be
obtained if the read cycle is greater than 125 ms.
Programming Example The following programming example shows how to use 2-decimal-place Mode
for the following PC configuration.
In this example, 100 times the temperature data for temperature input 0 is
stored in binary form in D100 to D102.
Leftmost 3 Digits and Flags
Flags
Bits
Data
15
0
14
1
13
1
12
0
11 to 08
7
07 to 04
F
03 to 00
F
6 7 F F
Flags
Rightmost 3 Digits and Flags
Flags
Bits
Data
15
1
14
1
13
1
12
0
11 to 08
F
07 to 04
F
03 to 00
F
E F F F
Flags
Error
°
F
Leftmost
Error
°
F
Rightmost
×
16
5
×
16
4
×
16
3
×
16
2
×
16
1
×
16
0
Temperature
data
Temperature
data
CPU Unit
Inputs
CIO 000
CIO 001
Outputs
CIO 100
CIO 101
Inputs
CIO 002
CIO 003
Outputs
None
CPM1A-TS001
Temperature Sensor Unit
Temperature unit setting:
0 (
°
C)
Two-decimal-place Mode:
1 (2 digits after decimal point stored)
Temperature Unit Flag (0:
°
C, 1:
°
F)
Open-circuit Flag (0: Normal, 1: Error)
Bit
D100
D101
D102
15 14 13 12
Always 0
11 10 8 7 5 3 1
Always 0 Always 0 0 0
Temperature input 0
CIO 2 Leftmost data
Rightmost data
CIO 200
9 6
4
2 0
×
16
5
×
16
4
×
16
3
×
16
2
×
16
1
×
16
0
×
16
7
×
16
6