4-8
Section
Offset and Gain Adjustment
98
CHG
PRES VAL?
c100 0000 ????
0
A
0
A
1
B
1
B
WRITE
c100
0011
The IR word n+1 bits shown in the following diagram are used for adjusting offset
and gain.
15
14
13
12
11
10
09
08
07
06
05
04
03
02
01
00
Bit
Word n+1
Clear bit
Set bit
Gain bit
Of
fset bit
Up bit
Down bit
The procedure for adjusting the analog output offset is explained below. As
shown in the following diagram, the set value is adjusted so that the analog out-
put reaches the standard value (0V/1V/4mA).
10 V
0
0FA0
Offset adjustment output range
Output signal range:
–10 to 10 V
The following example uses output number 1 adjustment for illustration. (The
unit number is 0.)
1, 2, 3...
1. Turn ON bit 00 (the Offset Bit) of IR word n+1. (Hold the ON status.)
CLR
00000
SHIFT
CONT
#
1
B
0
A
1
B
0
A
0
A
MONTR
10100
^OFF
PLAY
SET
10100
ON
Bits Used for Adjusting
Offset and Gain
Offset Adjustment
