CH6 PLC Programmable controller and air pressure control

中文    Orang indonesia      

Goto Zulie teacher teaching network     Pneumatic hydraulic control practice

　

　

　In 1968 , General Motors Co. of the United States, in order to enable the production line to adapt to various types of vehicles to make flexible changes, put forward the following requirements to the automatic control industry at the time:
n1. Replacing traditional electrical control wiring by writing programs.
n2. Easy to maintain and repair.
n3. It has higher reliability for harsh factory environment.
n4. Small size.
n5. Easy to connect with related peripherals.
n6. Price is competitive.

　

6-1 Comparison of Programmable Controller and Relay Circuit     

　

6-2 Composition of Programmable Controller System   

 

　

The software program scans continuously. The time required for each scan is called the scan time. The shorter the scan time, the faster its execution.

　

　

　

6-3 Special Function Module   

n1. Analog / digital (A / D) , digital / analog (D / A) conversion module

the n-2. High Speed Counter module

n3. Proportional, Integral and differential control module (PID Control Unit)

n-4. Computer link module (Computer Link Unit)

　

6-4 Programmable controller wiring method  

(1)Input terminal wiring method  
　

　　

(2) Wiring method of output terminal

6-5 FX Programmable Controller Instructions   

　

Special relay:

nM8000 operation monitoring ( ON during program RUN )

nM8002 initial pulse ( ON one SCAN during program RUN )

nM8011 0.01 second pulse

nM8012 0.1 second pulse

nM8013 1 second pulse

nM8030 BATTERY.V LED OFF

n WhenM8033 PLC ss, all outputs are maintained

nM8034 full output disabled

nM8039 fixed scan

nM8040 step ladder movement prohibition

　

　

LD instruction   

Address
PLC Code
Number
0
LD
X0
1
OUT
Y0
2
END
  

　

　

LDI instruction   

Address
PLC Code
Number
0
LDI
X0
1
OUT
Y0
2
END
  

　

　

 OUT instruction   

Address
PLC Code
Number
0
LD
X1
1
OUT
Y1
2
END
  

　

　

AND instruction   

Address
PLC Code
Number
0
LD
X0
1
AND
X1
2
OUT
Y0
3
END
  

　

　

ANI instruction    

Address
PLC Code
Number
0
LD
X0
1
ANI
X1
2
OUT
Y0
3
END
  

　

　

OR instruction    

Address
PLC Code
Number
0
LD
X0
1
OR
X1
2
OUT
Y0
3
END
  

　

　

ORI instruction    

Address
PLC Code
Number
0
LD
X0
1
ORI
X1
2
OUT
Y0
3
END
  

　

　

ANB instruction    

　

Address
PLC Code
Number
0
LD
X0
1
OR
X1
2
LD
X2
3
OR
X3
4
ANB
  
5
OUT
Y0
6
END
  

　

　

ORB instruction    

Address
PLC Code
Number
0
LD
X0
1
AND
X1
2
LD
X2
3
AND
X3
4
ORB
  
5
OUT
Y0
6
END
  

　

　

Auxiliary relay M instruction    

Address
PLC Code
Number
0
LDI
M1
1
AND
X0
2
OR
X1
3
OUT
M0
4
LD
M0
5
OUT
Y0
6
LD
X2
7
OUT
M1
8
END
  

　

　

Timer T instruction    

Address
PLC Code
Number
Address
PLC Code
Number
0
LD
X0
9
OR
Y1
1
OR
Y0
10
ANI
X1
2
ANI
X1
11
ANI
T1
3
ANI
T0
12
OUT
Y1
4
OUT
Y0
13
OUT
T1
5
OUT
T0
  
K
100
 
K
50
16
END
  
8
LD
T0
      

　

　

Counter C instruction and RST instruction    

Address
PLC Code
Number
0
LD
X0
1
RST
C0
3
LD
X1
4
OUT
C0
 
K
9
7
LD
C0
8
OUT
Y0
9
END
  

　

　

MC instruction and MCR instruction    

Address
PLC Code
Number
0
LD
X0
1
MC (N) 0
M100
4
LD
X0
5
AND
X1
6
OUT
Y0
7
LD
X2
8
ANI
X3
9
OUT
Y1
10
LD
X4
11
OR
Y2
12
AND
X5
13
OUT
Y2
14
MCR
(N) 0
16
END
  

　

　

CJ instruction    

Address
PLC Code
Number
Address
PLC Code
Number
0
LD
X0
12
OUT
Y1
1
CJ
P1
13
LD
X3
3
LD
X1
14
RST
C0
4
OR
Y0
16
LD
X5
5
ANI
X2
17
OUT
C0
6
OUT
Y0
  
K
8
7
LD
X2
20
LD
C0
8
OUT
T5
twenty one
OUT
Y2
 
K
50
twenty two
P1
  
11
LD
T5
twenty three
END
  

　

　

CALL instruction    

Address
PLC Code
Number
Address
PLC Code
Number
0
LD
X0
11
ANI
Y0
1
CALL
P0
12
OUT
Y1
3
LD
X1
13
FEND
  
4
OR
Y0
14
P0
  
5
ANI
X2
15
LD
X2
6
ANI
Y1
16
OUT
T5
7
OUT
Y0
  
K
50
8
LD
X3
19
LD
T5
9
OR
Y1
20
OUT
Y2
10
ANI
X2
twenty one
SRET
  

　

　

PLS / PLF instruction    

　

　

　

Address
PLC Code
Number
0
LD
X0
1
OR
Y0
2
ANI
X1
3
OUT
Y0
4
END
  

　

0
LDI
X0
1
SET
Y0
2
LDF
X1
3
RST
Y0
4
END
  

　

SET instruction and RST instruction    

Address
PLC Code
Number
0
LDI
X1
1
SET
Y0
2
SET
M0
3
LDI
X2
4
RST
Y0
5
RST
M0
6
LD
M0
7
OUT
Y1
8
END
  

　　

6-6 Programmable Controller Program Design   

nUsingA programmable controller to design a software circuit, follow these steps:

n1. List and number all input and output contacts.

n2. Draw the overall control circuit diagram of the control system.

n3. Change the control circuit to a programmable controller circuit.

n4. Transform the circuit into a logic instruction program.

n5. Write the instruction program into the programmable controller.

n6. Analog control action, if there is deviation, correct it.

　

　

6-7 Programmable Controller Application Example      

Example 6-1 Pneumatic Cylinder Reciprocating    
　

　

Examples 6-2 pneumatic cylinder continuously reciprocated 

   

　

Example 6-3 Automatic counting circuit reciprocating motion of pneumatic cylinder    

PLC circuit diagram

　

Address
PLC Code
Number
Address
PLC Code
Number
0
LD
X0
13
OUT
Y1
1
ANI
X1
14
LD
M2
2
ANI
M2
15
RST
C0
3
MC (N) 0
M100
17
LD
X2
6
LDI
M1
18
OUT
C0
7
OUT
Y0
  
K
8
8
LD
X3
twenty one
LD
C0
9
OR
M1
twenty two
OUT
M2
10
ANI
X2
twenty three
MCR
(N) 0
11
OUT
M1
25
END
  
12
LD
M1
      

　

　

Example 6-4 Press Print processing control    

　

　

Examples 6-5 The displacement steps of the pneumatic system are shown in the figure. Try to design the circuit.       

Address
PLC Code
Number
Address
PLC Code
Number
0
LD
X0
11
ORI
X4
1
OR
M0
12
AND
M0
2
ANI
X1
13
LD
X5
3
OUT
M0
14
OR
M1
4
LD
M0
15
ANB
  
5
ANI
M1
16
OUT
M1
6
OUT
Y0
17
LD
M1
7
LDI
M1
18
OUT
Y1
8
AND
X3
19
OUT
Y3
9
OUT
Y2
20
END
  
10
LDI
X2
      

　

　

Example 6-6 Trial Design Pneumatic Circuit    

　

Address
PLC Code
Number
Address
PLC Code
Number
0
LD
X0
13
OUT
M1
1
ANI
X1
14
LD
M1
2
MC (N) 0
M100
15
OUT
Y1
5
LDI
M1
16
LD
M1
6
OUT
Y0
17
AND
X2
7
LD
X3
18
OUT
Y3
8
ANI
M1
19
LD
M1
9
OUT
Y2
20
AND
X4
10
LD
X5
twenty one
OUT
M2
11
OR
M1
twenty two
MCR
(N) 0
12
ANI
M2
twenty four
END
  

　

　

Example 6-7 Pneumatic Electrical Circuit    

Address
PLC Code
Number
Address
PLC Code
Number
0
LD
X0
16
LD
X4
1
OR
M0
17
AND
M1
2
ANI
X1
18
OUT
Y4
3
OUT
M0
19
LD
X7
4
LD
M0
20
OUT
T0
5
ANI
M2
  
K
5
6
OUT
Y0
twenty three
LD
T0
7
LD
X3
twenty four
OR
M2
8
ANI
M2
25
ANI
X2
9
ANI
M1
26
OUT
M2
10
OUT
Y2
27
OUT
Y5
11
LD
X5
28
LD
X6
12
OR
M1
29
AND
M2
13
ANI
M2
30
OUT
Y1
14
OUT
M1
31
END
  
15
OUT
Y3
      

　

　

Example 6-8 Pneumatic Electrical Circuit    

Address
PLC Code
Number
Address
PLC Code
Number
0
LD
X0
16
LDI
X5
1
OR
X1
17
AND
M1
2
ANI
M0
18
LD
X6
3
AND
M1
19
ANI
M0
4
OUT
Y0
20
ORB
  
5
LD
X3
twenty one
OUT
M1
6
LDI
X7
twenty two
LDI
M1
7
AND
M0
twenty three
OUT
Y3
8
ORB
  
twenty four
LD
X4
9
OUT
M0
25
AND
M0
10
LD
M0
26
ANI
M1
11
OUT
Y1
27
OUT
Y4
12
LD
X2
28
LDI
M0
13
AND
M0
29
OUT
Y5
14
AND
M1
30
END
  
15
OUT
Y2
      

　Goto Zulie teacher teaching networ    Pneumatic hydraulic control practice

GOTO Hydraulics: Chapter 1 Introduction to Hydraulics   

FIN