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E L C P r o g r a m m i n g M a n u a l
F o r m o r e i nf o r m a t i o n v i sit :
w w w. e a t o n . c o m
MN05003003E
3-208
a) After terminals 1, 2, 4, 8 for the first 7-segment display are decoded, the result will be written to
Y20~Y23 for this display. As terminals Y24-Y27 cycle ON and OFF, these values will be driven
and latched on the display..
b) When X20=ON, the contents of D10 will be transmitted to the 7-segment display to display in
sequential order the data to outputs Y24~Y27 cycling ON/OFF in sequence.
4.
4 digits of two groups,
n
=4~7
a) After the terminal of 1, 2, 4, 8 for the first 7-segment display are decoded and displayed, , the
terminals for the second 7-segment displayY30~Y33 will be decoded. Terminals Y24~Y27 are
used to latch the display values for both sets of displays by continually cycling On and OFF.
b) The contents of D10 will be decoded and written to the first group of outputs for the first
7-segment display and the contents of D11 will be decoded and written to the second group of
outputs for the second 7-segment display to display. If D10=K1234 and D11=K4321, the first
group will display 1 2 3 4 and the second group will display 4 3 2 1.
7-segment display output wiring
C
Y20
Y21
Y22
Y23
Y24
Y25
Y26
Y27
Y30
Y31
Y32
Y33
C
C
1
2
4
8
10
0
10
1
10
2
10
3
10
3
10
2
10
1
10
0
V+
10
3
10
2
10
1
10
0
V+
1
2
4
8
1
2
4
8
The first group
The second group
Points to note:
1.
ELC-PB, ELCB-PB series only provides a group of 4 digits for a 7-segment display and use 8
output points. The SEGL instruction only can be used once in the program and the usage
range of operand
n
is 0 to 3.
2.
The scan time must be longer than 10ms for this instruction to execute properly. If the scan
time is shorter than 10ms, use the fixed scan time function to fix the scan time to 10ms.
3.
n
is used to set the polarity of transistor output loop. It can be set to positive polarity or
negative polarity. The type of 7-segment display it connects to (a group of 4 digits or two
groups of 4 digits) determines the value of
n
.
4.
ELC transistor output is NPN type and it is open collect output. When wiring, connect the
output to a pull-up resistor to VCC (less than 30VDC). When the output point Y is ON, the
Содержание ELC-PB
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