Variable
Reference point shift mode
0
Reference point shift mode OFF
Every time 0 is rewritten to 1, a reference point is adjusted to a
device being connected at the time and renewed to a new one.
Reference point shift mode ON
A reference point is fixed to a point set with the variable 1 and
conversion operation starts.
2
1
0-10V
Input
specifications
7-segment display
LED
indication
0-5V
1-5V
0-20mA
4-20mA
V ON
LINK
V
mA
ALM
V ON
LINK
V
mA
ALM
V ON
LINK
V
mA
ALM
mA ON
LINK
V
mA
ALM
mA ON
LINK
V
mA
ALM
0V
Reference
point
0V
1V
0mA
4mA
LINK
V
mA
ALM
Ex.) When setting to 4-20 mA specification and operating
Displaying setting
specifications
■
When using as is
■
When using the reference point shift mode
■
When releasing the reference point shift mode
Renewing to the offset adjustment value
Operating in the reference point shift mode
Displaying the input
measurement value
(Ex.) During 12 mA
conversion
LINK
V
mA
ALM
LINK
V
mA
ALM
LINK
V
mA
ALM
LINK
V
mA
ALM
LINK
V
mA
ALM
LINK
V
mA
ALM
LINK
V
mA
ALM
Displaying the input
measurement value
(Ex.) During 12 mA
conversion
LINK
V
mA
ALM
LINK
V
mA
ALM
Operating in the reference point shift mode
Releasing the reference point shift mode
Displaying the input
measurement value
(Ex.) During 12 mA
conversion
LINK
V
mA
ALM
LINK
V
mA
ALM
Displaying the input
measurement value
Alternately displaying
"CHG" and "Pr2"
Parameter 2
Changing 0 to 1
LINK
V
mA
ALM
LINK
V
mA
ALM
Parameter 2
When 1 continues
Parameter 2
Changing to 2
About 3 seconds
About 3 seconds
0.6 second interval
LINK
V
mA
ALM
LINK
V
mA
ALM
LINK
V
mA
ALM
LINK
V
mA
ALM
Parameter 2
Changing to 0
LINK
V
mA
ALM
LINK
V
mA
ALM
About 3 seconds
isplaying the input
measurement value
(Ex.) During 12 mA
conversion
LINK
V
mA
ALM
LINK
V
mA
ALM
About 3 seconds
■
Display example during operation
-L*A1AW 8/12-
[Data Structure]
Before shipment: 0
■
Reference point shift mode
14
15
Conversion data (16bit binary data)
Data (one word)
1
2
0
3
4
5
6
7
8
9
10
11
12
13
LSB
MSB
This is a function to adjust an offset error between the connected analog
output device and this analog input unit.
Shift the reference point by a set reference point adjustment value.
When "address/parameter automatic setting" is used, the extension unit
follows only ON/OFF of the reference shift mode.
Renew the reference point for each unit.
When the value of the parameter 2 is rewritten from 0 to 1, the 7-segment
display in the reference point shift mode indicates input specifications set at
the parameter 1.
The average result of 32 times of voltage or current values input at this time
becomes the reference point adjustment value.
For AnyWireLink transmission, "measurement value - reference point
adjustment value" is stored as input data.
When the value of the parameter 2 is renewed to 1, the reference point shift
mode is turned ON.
When receiving the transmission signal and starting, the unit displays set
input specifications for about 3 seconds and then switches them to actual
input value display.
Value of Parameter 2
0
→
1
Displaying the current input specifications
(for about 1 second)
Value of Parameter 2
1 remains
Changing to alternate display of "CHG" and "Pr2"
Value of Parameter 2
1
→
2
Shifting to conversion operation by the reference point
shift and displaying an analog value to be input.
While the value of the parameter 2 is 1, "CHG" and "Pr2" is alternately
displayed for 7-segment display.
- Address writer (ARW-04, ARW-03): Parameter 02
MAX output digital value: -200 to 16200 (FF38Hex* to 3F48Hex)
* The minus values are two's complement notation.
Effective output digital value: 0 to 16000 (0Hex to 3E80Hex)
