KEYENCE KV-D20 - Manual (Page 61)

3. Examples of Ladder Programs
3
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1. Turn on Bits 0, 5, and 6 of DM1676 ($0061) to enable changing the screen between the
operator, switch comment, and lamp comment screens.
2. With the MEMSW instruction, turn on SW3-3 of the memory switch ($0800) to set the
24-bit high-speed counter.
3. Set the high-speed counter in double multiplication mode and reset high-speed counter
0.
4. High-speed counter 0 starts when relay 1000 is turned on. Customized lamp 1 illumi-
nates while the high-speed counter is operating.
5. The ON/OFF status of relay 1000 is switched every time customized switch F1 is
pressed. (Alternating circuit)
6. The current value of high-speed counter 0 and the outputs of comparators 0 and 1 are
reset when customized switch F2 is pressed.
7. Customized lamp 2 illuminates when comparator 0 turns on.
8. Customized lamp 3 illuminates when comparator 1 turns on.
9. A flicker circuit is used to flash the titles.
When relay 1000 is turned on, assign relay 15000 to the device displayed on the first
line (specify "#55000" in DM1580), and set the attributes so that only the comment is
displayed (Bit 8: ON) (DM1680 = $0100). Continue this operation for 500 ms.
After 500 ms, assign relay 15001 to the device displayed on the first line (specify
"#55001" in DM1580), and set the attributes so that only the comment is displayed (Bit
8: ON) (DM1680 = $0100). Continue this operation for 1 second.
Repeat the operations above to flash the title.
10. Assign CTH0 to the device displayed on the second line (specify "#23000" in DM1581).
Set the attributes so that the decimal point position is "2" ($0002), the number of
spaces at the right end is "2" ($0020), a sign is used (Bit 9: ON), and changing the
value is disabled (Bit 15: ON) (DM1681 = $8222).
0011
0012
0013
0014
0015
0016
0017
0018
0019
0020
0021
0022
0023
0024
0025
0026
0027
ENDH
END
1000
2500
2003
2501
CTC0
CTC1
1000 T001
T000
2008 #23000
DM1581
DW
$8222
DM1681
DW
#22000
DM1582
DW
$0222
DM1682
DW
#22001
DM1583
DW
$0222
DM1683
DW
#55000
DM1580
DW
$0100
DM1680
DW T000
#00005
#55001
DM1580
DW
$0100
DM1680
DW T001
#00010
2505
2506
CTH0
RES
CTC1
RES
CTC0
RES
SFT
1000
D
1000
CLK
RES
5
6
7
8
9
10
ON for
1 scan
Always OFF
Alternating switch
Reset
High-speed counter comparator setting
Flashing title display
Use the comments of internal utility relays 15000 and 15001 as titles.
Display the current and preset values of high-speed counter 0
(2-words with a sign and two decimal places)
kv_d20_manual.p65 08.3.10, 6:09 PM 61