Omron CJ1W-AD041-V1, Operation Manual

Page: 86 / 427

63
Adjusting Offset and Gain Section 2-7
Bits Used for Adjusting
Offset and Gain The CIO word (n+1) bits shown in the following diagram are used for adjusting
offset and gain.
Offset Adjustment The procedure for adjusting the analog input offset is explained below. As
shown in the following diagram, the offset is adjusted by sampling inputs so
that the conversion value becomes 0.
The following example uses input number 1 adjustment for illustration. (The
unit number is 0.)
1,2,3... 1. Turn ON bit 00 (the Offset Bit) of CIO word n+1. (Hold the ON status.)
For CS1W-AD041-V1 and CS1W-AD081-V1, the analog input’s digital
conversion values while the Offset Bit is ON will be monitored in CIO word
n+8. For CS1W-AD161, the values will be monitored in CIO word n+17.
2. Check whether the input devices are connected.
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
Offset Bit
10 V 0
0FA0
Offset adjustment input range
Input signal range:
0 to 10 V
CLR
000000 CT00
SHIFT
CONT
#
2
C
0
A
0
A
1
B
0
A
0
A
MON
200100 ^ OFF
SET
200100 ^ ON