Rockwell-automation 1746-NI8 SLC 500 Analog Input Modules User Manual Uživatelský manuál stáhnout pdf (Strana 72)

8–7

Application Examples

Publication

17466.8 - 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

Selector Switch

L1 - I:6/0

L2 - I:6/1

L3 - I:6/2

Liquid LevelPSI

Low Level

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.

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Rockwell-automation 1746-NI8 SLC 500 Analog Input Modules User Manual Uživatelský manuál Strana 72