Rockwell Automation 1746-NI8 SLC 500 Analog Input Modules User Manual - Manual (Page 72)

8–7 Application Examples
Publication 1746Ć6.8 - April 1997
Program Set Up and Operation Summary
1. Set up one configuration word in memory for each channel. The
table below shows the configuration word allocation summary.
Channel Configuration Word Value
0 N10:0 L1 (amps)
1 N10:1 L2 (amps)
2 N10:2 L3 (amps)
3 N10:3 pressure (psi)
4 N10:4 liquid level (inches)
2. When the position of the three-position selector changes, convert
the appropriate scaled data word to BCD and send the data to the
LED display.
Amps
High Level
Display Panel
L1
Selector Switch
L1 - I:6/0
L2 - I:6/1
L3 - I:6/2
Liquid Level PSI
Low Level
L3
L2
3. If the liquid level goes below the low level set point, turn on the
low level warning light, and if the liquid level goes above the
high level set point, turn on the high level warning light.
4. Convert the individual analog scaled data words to BCD and send
the data to the respective LED displays.