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Spectrum Controls 1746sc-NI8u User Manual

Page 72

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60

SLC 500

Universal Analog Input Module

Rung 2:1

This rung tests to see if T4:0.ACC is at a value between 800 and 950
counts. If so, the channel configuration words are defined (through the
Fill File command) to send status information.

FLL
FILL FILE
Source

151

Dest

#O:2.0

Length 8

LIM
LIMIT TEST
Low Lim

800

Test

T4:0.ACC
0

High Lim

950

Rung 2:2

This rung executes a Copy File command to move the channel status
word (as enabled in the previous rung) into registers N7:10 through
N7:17 for all channels.

Though the module is quick about switching from sensor data to status
information, it is a good idea to give the module a little time to switch
modes. That is why this example uses a half second period in time
between when the channel is set-up to send the status word and when
the status word is read into the N7 table.

COP
COPY FILE
Source #I:2.0
Dest

#N7:10

Length 8

LIM
LIMIT TEST
Low Lim

950

Test

T4:0.ACC
0

High Lim

1000