Keyence PLC Programming Course 3

2. Analog Control for Visual PLC
NEW
Analog I/O Unit Pressure
PLC KL Series Sensor
Measuring
Instruments
Our Analog I/O Provides
3 Big Advantages
Noise Immunity
Visual Set-up
Simple Wiring Invertor
Visual Analog I/O Modules Eliminate Noise Interface in
Long Distance Transmission
Current Problems
1 Extending an analog signal cable leads to greater interference and
a weaker signal
Analog Cable length: 0 m Cable length: 150 m
Module
Cable length: 50 m
The longer the cable, the weaker A very long analog signal cable is
the analog voltage signal easily affected by other electrical
becomes. signals resulting in a weaker signal.
Analog
signal
Visual Analog Solution
Strong signals are unaffected by noise interference
Cable length:
Cable length: 0 m 50 m
Cable length: 150 m
KL
2

3. Current Problems
2 Viewing analog signals require a specific display device
Conventional
method
HH
HI
GO TIM
ING
LO
LL
SEL
EC
T No.
RD
-5 0
R
Analog sensor
controller
-081
LK
Analog
Module
Visual Analog Solution
The analog unit also serves as a display unit
-081
LK
Analog unit
KL
1200 m
The analog unit also
displays results. By placing
the unit close to the analog
sensor you can quickly and
easily view the current value.
Current Problems
3 Controlling multiple analog devices requires extensive wiring
When the number of analog
devices increases, so does
the wiring.
Analog
Module
Visual Analog Solution
A single cable permits processing of up to 128 channels
KL
KL Only one cable is
needed to connect
the analog units,
allowing up to 128
channels of analog
I/O control.
3

4. 1. How to display measured data in millimeters
or inches
The analog data output from the LK Series displacement sensor can be displayed in either millimeters or inches.
[System configuration]
Display in millimeters
(5.000 mm)
LK Series (Head) Switching
Analog
input Display in inches
KL (19.70 inch)
Note: LK controller is not shown
in the drawing.
[Communication settings for the KL unit]
KL-N 10V KL-4AD KL-2D A
1st address of send dat a 00H – –
N umber of send addresses 00H – –
1st address of receive dat a 00H – –
N umber of receive addresses 08H – –
Address f or KL-4AD – 00H –
Address f or KL-2D A – – –
FIN AL swit ch S et t ing OFF ON –
KL-4AD Range – +/-10V –
[Description of ladder diagram]
2008 KL-N10V Communication setup 2700 2701 2702 2704 2705 2706
( RES) ( SET ) ( SET ) ( SET ) ( RES) ( SET )
$0000 $0000 $0000 $0008
DW DW DW DW
DM1800 DM1801 DM1802 DM1803
2007 2700
( SET )
Calculates the input voltage value from KL-4AD
2002 DM1600 #00025 #00010 DM0000
LDA MUL DIV STA
Display in "mm"
2002 DM0000 DM0001
LDA STA
Display in "inch"
2002 DM0000 #00197 #05000 DM0002
LDA MUL DIV STA
4

5. 2. How to output the status of plant air pressure
in 16 steps
ON/OFF output can be obtained in 16 steps using analog data output from the AP Series pressure sensor.
[System configuration] Output 2
OFF ON
2 output points
Pressure
are provided.
Output 1
OFF ON
time
KL
Pressure
A
AP
-30
Output 1
Output is available
OU
T1
to
in 16 steps.
mm
Hg
OU
T2
Analog input Output 16
* To actually do this, the
time expansion units are required.
[Communication settings for the KL unit]
KL-N 10V KL-4AD KL-2D A
1st address of send dat a 00H – –
N umber of send addresses 00H – –
1st address of receive dat a 00H – –
N umber of receive addresses 08H – –
Address f or KL-4AD – 00H –
Address f or KL-2D A – – –
FIN AL swit ch S et t ing OFF ON –
KL-4AD Range – 1-5V –
[Description of ladder diagram]
2008 KL-N10V Communication setup 2700 2701 2702 2704 2705 2706
( RES) ( SET ) ( SET ) ( SET ) ( RES) ( SET )
$0000 $0000 $0000 $0008
DW DW DW DW
DM1800 DM1801 DM1802 DM1803
2007 2700
( SET )
2002 DM1600 #01000 DM0000 Calculates the input voltage value from KL-4AD
LDA SUB STA
2002 DM0000 #00725 #00725 #00002 DM0010 Calculates the pressure value by unit of 0.1 Psi
LDA MUL SUB DIV STA
2002 DM0010 DM0100 2009 500
Output by 16-step tolerance
LDA CMP
DM0101 2009 501
CMP
DM0102 2009 502
CMP
DM0115 2009 515
CMP
5

6. 3. How to change motor speed using a digital
switch
Analog voltage is output according to the digital switch number when changing the rotating speed of an inverter motor.
[System configuration] When using a 1-digit digital switch
Speed
time
KL
When using a 2-digit digital switch
Analog output
Speed
Adjustment can be
performed in finer steps.
Invertor
[Communication settings for the KL unit] time
KL-N 10V KL-4AD KL-2D A
1st address of send dat a 00H – –
N umber of send addresses 08H – –
1st address of receive dat a 00H – –
N umber of receive addresses 00H – –
Address f or KL-4AD – – –
Address f or KL-2D A – – 00H
FIN AL swit ch S et t ing ON – –
KL-4AD Range – – 0-5V
[Description of ladder diagram]
2008 KL-N10V Communication setup 2700 2701 2702 2704 2705 2706
( RES) ( SET ) ( SET ) ( SET ) ( SET ) ( SET )
$0000 $0008 $0000 $0000
DW DW DW DW
DM1800 DM1801 DM1802 DM1803
2007 2700
( SET )
Input by Digital Switch (0000 to 0007)
2002 0000 $00FF DM0020
LDA ANDA TBIN STA
Converts the Digital Switch input value to voltage.
2002 DM0020 #05000 #00006 DM1000
LDA MUL DIV STA
Controls speed of the inverter
2002 DM1000 #00100 #00125 DM1700
LDA MUL DIV STA
6

7. 4. How to change air pressure using a digital switch
Analog voltage is output according to the digital switch number when changing air pressure with electropneumatic
regulator.
Usually
[System configuration]
Pressure
The regulator is manually
adjusted.
time
Electro- When using this system
pneumatic IN KL
Regulator
The regulator is
Pressure
Analog output automatically adjusted
through the digital switch.
OUT time
[Communication settings for the KL unit]
KL-N 10V KL-4AD KL-2D A
1st address of send dat a 00H – –
N umber of send addresses 08H – –
1st address of receive dat a 00H – –
N umber of receive addresses 00H – –
Address f or KL-4AD – – –
Address f or KL-2D A – – 00H
FIN AL swit ch S et t ing ON – –
KL-4AD Range – – 0-5V
[Description of ladder diagram]
2008 KL-N10V Communication setup 2700 2701 2702 2704 2705 2706
( RES) ( SET ) ( SET ) ( SET ) ( SET ) ( SET )
$0000 $0008 $0000 $0000
DW DW DW DW
DM1800 DM1801 DM1802 DM1803
2007 2700
( SET )
Input by Digital Switch (0000 to 0015)
2002 0000 DM0020
LDA TBIN STA
Converts the Digital Switch input value to voltage.
2002 DM0020 #05000 #01450 DM1000
LDA MUL DIV STA
Controls speed of the inverter
2002 DM1000 #00100 #00125 DM1700
LDA MUL DIV STA
7

8. 5. How to transmit analog data to a distant point
without data deterioration
Analog data is amplified, inverted and output to a recorder located 1,200 m away.
When directly transmitting analog data
[System configuration]
Noise Actual data
AP
A
AP-3
0
OUT1
mmH
g
1 to 5 V
OUT2
Voltage
KL Deteriorated
KV Resultant data
1200 mm
When using this system
Voltage
Data deterioration can be prevented
and noise can be eliminated.
10 through 0 V
Inverted data
Recorder * The KV Series can also be used to amplify analog data
[Communication settings for the KL unit]
KL-N 10V KL-4AD KL-2D A
1st address of send dat a 08H – –
N umber of send addresses 08H – –
1st address of receive dat a 00H – –
N umber of receive addresses 08H – –
Address f or KL-4AD – 00H –
Address f or KL-2D A – – 08H
FIN AL swit ch S et t ing ON OFF –
KL-4AD Range – 0-5V 0-10V
[Description of ladder diagram]
2008 KL-N10V Communication setup 2700 2701 2702 2704 2705 2706
( RES) ( SET ) ( SET ) ( SET ) ( SET ) ( SET )
$0008 $0008 $0000 $0008
DW DW DW DW
DM1800 DM1801 DM1802 DM1803
2007 2700
( SET )
Calculates the input voltage value from KL-4AD
2002 DM1600 #00125 #00100 DM0000
LDA MUL DIV STA
Converts the 0-5V range to 10-0V range.
2002 DM0000 #00002 TM10
LDA MUL STA
#10000 TM10 DM1000
LDA SUB STA
Calculates the output voltage through KL-2DA
2002 DM1000 #00010 #00025 DM1700
LDA MUL DIV STA
8

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10. 10