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3 . I n s t r u c t i o n S e t
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The figure below is an example wiring diagram for the operation of the MTR instruction. The
external 2 rows consist of 2 sets of inputs wired to X40~47 and Y40~41. A total of 16 addresses
are used to store the states of the two rows of inputs: M10~M17, M20~M27. For a general
precaution to aid in successful operation, diodes should be placed after each input devices. These
diodes should have a rating of 0.1A, 50V.
S/S
X40
X41 X42
X43 X44 X45
X47
X46
C
Y40
Y41 Y42
Y43 Y44 Y45
Y47
Y46
M10
X41
M20
M11 M12 M13 M14 M15 M16 M17
X42 X43 X44 X45
X46 X47
M21 M22 M23 M24 M25 M26 M27
0.1A/50V
Input devices
Diode
+24V
24G
When output Y40 is ON, only those inputs in the first row are read. These results are stored in
addresses M10~M17. The second step involves Y40 going OFF and Y41 coming ON. Then only
inputs in the second row are read. These results are stored in M20~M27.
2
4
Y41
Y40
25ms
1
3
Read input signal in the first row
Read input signal in the second row
Processing time of each row is about 25ms
Содержание ELC-PB
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