Preface
MicroLogix 1000 Programmable Controllers User Manual
11–12
Applications of the SQC instruction include machine diagnostics. The following
figure explains how the SQC instruction works.
(DN)
(FD)
0010
0100
1001
1101
1111
1111
1111
0000
0010
0100
1001
1010
0
1
2
3
4
Step
B3:8
9
10
11
12
Word
Input Word I:0
Mask Value FFF0
Sequencer Ref File #B3:8
The SQC FD bit is set when the instruction detects that an input
word matches (thru mask) its corresponding reference word.
The FD bit R6:3/FD is set in this example, since the input word
matches the sequencer reference value using the mask value.
(EN)
SQC
SEQUENCER COMPARE
File
#B3:8
Mask
FFF0
Source
I:0
Control
R6:3
Length
4
Position
2
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