Rockwell Automation 1395 Digital Reference Adapter Board - Manual (Page 54)

Chapter 6
StartĆUp
6-8
Figure 6.4
Analog Input Example: Potentiometer 0 to10V range to control - 100% to +100% Base
Speed
Digital Scale
P552 = 4
Multiply Input
by 4
A
D
Multiplexer
Potentiometer
0 to +10V DC
+ 2048
Programmable
Analog
Gain
P556 = 0
Multiply Input
by 1
To Torque
Reference
Digital Offset
P553 = -5
Analog Offset
P557 = 0VDC
+10V
0
+10V
0
- 1024
0
+ 1024
- 4096
0
+ 4096
Analog Input - 10V + 10V 0
0 +5V + 10V Potentiometer
0 0 0
0
+ 10V +5V
Analog Offset P557
Result
Analog Gain P556
x 1 x 1 x 1
+ 2048
0
0 + 10V +5V
Result
0 + 2048 +1024
Digital Value
Digital Offset P553 = -5V
-1024 -1024 -1024
0
Result -1024 1024
Digital Offset P552 = 4 x 4 x 4 x 4
-4096 + 4096 0
Final Result
0V