DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
3-192
192. When X20 = ON, Y24~Y27 will be scanned in circles automatically. Each circle requires 12
scan cycles. M1029 = ON for a scan cycle whenever a circle is completed.
193. When there is 1 set of 4-digit 7-segment display, n = 0 ~ 3
Connect the 7-segment display terminals 1, 2, 4, 8 in parallel then connect them to Y20 ~ Y23 on
PLC. After this, connect the latch terminals of each digit to Y24 ~ Y27 on PLC.
1. When X20 = ON, the content of D10 will be decoded through Y20 ~ Y23 and sent to
7-segment display in sequence by the circulation of Y24 ~ Y27
194. When there are 2 sets of 4-digit 7-segment display, n = 4 ~ 7
Connect the 7-segment display terminals 1, 2, 4, 8 in parallel then connect them to Y30 ~ Y33 on
PLC. After this, connect the latch terminals of each digit to Y24 ~ Y27 on PLC.
2. The content in D10 is sent to the 1
st
set of 7-segment display. The content in D11 is sent to
the 2
nd
set of 7-segment display. If D10 = K1234 and D11 = K4321, the 1
st
set will display 1 2
3 4, and the 2
nd
set will display 4 3 2 1.
Wiring of the 7-segment display scan output:
C Y20 Y21 Y22 Y23 Y24 Y25 Y26 Y27 Y30 Y31 Y32 Y33CC
1248
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 set
The second set
Points to note:
195. For executing this instruction, scan time must be longer than 10ms. If scan time is shorter
than 10ms, please fix the scan time at 10ms.
196. If the output points of PLC is transistor output, please apply proper 7-segment display.
197. Operand n is used for setting up the polarity of the transistor output and the number of sets of
the 4-digit 7-segment display.
198. The output point must be a transistor module of NPN output type with open collector outputs.
The output has to connect to a pull-up resistor to VCC (less than 30VDC). When wiring,
output should connect a pull-high resistor to VCC (less than 30VDC). Therefore, when output
point Y is ON, the output signal will be LOW.
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