2-6
Section
Offset and Gain Adjustment
31
2. Check whether the input devices are connected.
A0
A1
A2
A3
A0
A1
A2
A3
+
–
+
–
Voltage input
Input 1
Current input
Input 1
3. Input the voltage or current so that the conversion value is maximized (0FA0
or 07D0). The following table shows the the gain adjustment voltages and
currents to be input according to the input signal range.
Input signal range
Input voltage/current
Input range
0 to 10 V
10 V
9.5 to 10.5 V
–10 to 10 V
10 V
9.0 to 11.0 V
1 to 5 V
5 V
4.8 to 5.2 V
4 to 20 mA
20 mA
19.2 to 20.8 mA
4. With the voltage or current having been input so that the conversion value
for the Analog Input Unit is maximized (0FA0 or 07D0), turn bit 04 (the Set
Bit) of IR word n+1 ON and then OFF again.
SHIFT
CONT
#
1
B
0
A
1
B
0
A
4
E
MONTR
10104 10101
^OFF ^ ON
PLAY
SET
10104 10101
ON ^ ON
REC
RESET
10104 10101
OFF ^ ON
While the Gain Bit is ON, the gain value will be saved to the Unit’s EEPROM
when the Set Bit turns ON.
5. To finish the gain adjustment, turn OFF bit 01 (the Gain Bit) of IR word n+1.
SHIFT
CONT
#
1
B
0
A
1
B
0
A
1
B
MONTR
10101 10104
^ ON ^OFF
REC
RESET
10101 10104
OFF ^OFF
