Tap lenh PLC delta co ban
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3 Basic Instructions
3.1 Basic Instructions and Step Ladder Instructions
ES includes ES/EX/SS; SA includes SA/SX/SC; EH includes EH2/SV/EH3/SV2.
For EH series MPU, the execution speed in the brackets ( ) refers to the execution speed of designated operand
M1536 ~ M4095.
Basic Instructions
Instruction
Function
Operands
Code
Execution speed (us)
ES
SA
STEP
EH
LD
Loading in A contact
X, Y, M, S, T, C
3.8
3.8
0.24 (0.56) 1~3
LDI
Loading in B contact
X, Y, M, S, T, C
3.88
3.88
0.24 (0.56) 1~3
AND
Series connection- A contact
X, Y, M, S, T, C
2.32
2.32
0.24 (0.56) 1~3
ANI
Series connection- B contact
X, Y, M, S, T, C
2.4
2.4
0.24 (0.56) 1~3
OR
Parallel connection- A contact
X, Y, M, S, T, C
2.32
2.32
0.24 (0.56) 1~3
ORI
Parallel connection- B contact
X, Y, M, S, T, C
2.4
2.4
0.24 (0.56) 1~3
ANB
Series connection- loop blocks
N/A
1.76
1.76
0.24
1~3
ORB
Parallel connection- loop blocks
N/A
1.76
1.76
0.24
1~3
N/A
1.68
1.68
0.24
1~3
N/A
1.6
1.6
0.24
1
N/A
1.6
1.6
0.24
1
MPS
MRD
MPP
Store the current result of the internal
PLC operations
Reads the current result of the
internal PLC operations
Pops (recalls and removes) the
currently stored result
Output instructions
Instruction
Function
Operands
Code
Execution speed (us)
ES
SA
STEP
EH
OUT
Output coil
Y, M, S
5.04
5.04
0.24 (0.56) 1~3
SET
Latched（On）
Y, M, S
3.8
3.8
0.24 (0.56) 1~3
RST
Clear the contacts or the registers
Y, M, S, T, C, D, E, F
7.8
7.8
0.24 (0.56)
3
Timers, Counters
API
Instruction
Function
Operands
Code
Execution speed (us)
ES
SA
EH
STEP
96
TMR
16-bit timer
T-K or T-D
10.6
10.6
9.6
4
97
CNT
16-bit counter
C-K or C-D (16 bits)
9.7
9.7
12.8
4
97
DCNT
32-bit counter
C-K or C-D (32 bits)
10.3
10.3
14.3
6
DVP-PLC Application Manual
3-1
3 Basic Instructions
Main control instructions
Instruction
Function
Operands
Code
Execution speed (us)
ES
SA
EH
STEP
MC
Master control start
N0 ~ N7
5.6
5.6
5.6
3
MCR
Master control reset
N0 ~ N7
5.7
5.7
5.7
3
Instructions for detecting the contacts of rising-/falling-edge
API
Instruction
Code
Function
Operands
Execution speed (us)
ES
SA
EH
STEP
90
LDP
Rising-edge detection operation
X, Y, M, S, T, C
5.1
5.1
0.56 (0.88)
3
91
LDF
Falling-edge detection operation
X, Y, M, S, T, C
5.1
5.1
0.56 (0.88)
3
92
ANDP
Rising-edge series connection
X, Y, M, S, T, C
4.9
4.9
0.56 (0.88)
3
93
ANDF
Falling-edge series connection
X, Y, M, S, T, C
4.9
4.9
0.56 (0.88)
3
94
ORP
Rising-edge parallel connection
X, Y, M, S, T, C
4.9
4.9
0.56 (0.88)
3
95
ORF
Falling-edge parallel connection
X, Y, M, S, T, C
4.9
4.9
0.56 (0.88)
3
Rising-/falling-edge output instructions
API
Instruction
Code
Function
Operands
Execution speed (us)
ES
SA
EH
STEP
89
PLS
Rising-edge output
Y, M
7.8
7.8
9.92
3
99
PLF
Falling-edge output
Y, M
7.8
7.8
10.16
3
End instruction
Instruction
Code
END
Function
Program ends
Operands
N/A
Execution speed (us)
ES
SA
EH
5
5
0.24
STEP
1
Other instructions
API
98
3-2
Instruction
Code
Function
Operands
Execution speed (us)
ES
SA
EH
STEP
NOP
No operation
N/A
0.88
0.88
0.16
1
INV
Inverting operation
N/A
1.6
1.6
0.24
1
P
Pointer
P0 ~ P255
0.88
0.88
-
1
I
Interruption program marker
I□□□
0.88
0.88
-
1
DVP-PLC Application Manual
3 Basic Instructions
Step ladder instructions
Instruction
Function
Execution speed (us)
Operands
Code
ES
SA
EH
STEP
STL
Step transition ladder start instruction
S
11.6
10.6
0.56
1
RET
Step transition ladder return instruction
N/A
7.04
6.04
0.24
1
Note 1: ES includes ES/EX/SS; SA includes SA/SX/SC; EH includes EH/EH2/SV.
Note 2: For EH series MPU, the execution speed in the brackets ( ) refers to the execution speed of designated
operand M1536 ~ M4095.
3.2
Explanations on Basic Instructions
Mnemonic
Function
Program steps
LD
Loading in A contact
1
X0 ~ X377
Y0 ~ Y377
Operand
Controllers
ES
EX
M0 ~ M4095 S0 ~ S1023
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
The LD instruction is used on the A contact that has its start from the left BUS or the A contact that is the start of a
contact circuit. The functions are to save the present contents and store the acquired contact status into the
accumulative register.
Program Example:
Ladder diagram:
X0
X1
Y1
Instruction code:
Operation:
LD
X0
Loading in contact A of X0
AND
X1
Connecting to contact A of X1 in series
OUT
Y1
Driving Y1 coil
Note: DVP-EH3 series PLCs whose version is 1.40 and DVP-SV2 series PLCs whose version is 1.20 support the
operands X, Y, M, and S. These operands can be qualified by E or F, e.g. LD X0E1.
Mnemonic
LDI
Function
Program steps
Loading in B contact
X0 ~ X377
Y0 ~ Y377
Operand
Controllers
ES
1
M0 ~ M4095 S0 ~ S1023
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
The LDI instruction is used on the B contact that has its start from the left BUS or the B contact that is the start of a
contact circuit. The functions are to save the present contents and store the acquired contact status into the
accumulative register.
DVP-PLC Application Manual
3-3
3 Basic Instructions
Program Example:
Ladder diagram:
X0
X1
Y1
Instruction code:
Operation:
LDI
X0
Loading in contact B of X0
AND
X1
Connecting to contact A of X1 in series
OUT
Y1
Driving Y1 coil
Note: DVP-EH3 series PLCs whose version is 1.40 and DVP-SV2 series PLCs whose version is 1.20 support the
operands X, Y, M, and S. These operands can be qualified by E or F, e.g. LDI X0E1.
Mnemonic
Function
Program steps
AND
Series connection- A contact
1
Operand
X0 ~ X377
Y0 ~ Y377
Controllers
ES
M0 ~ M4095 S0 ~ S1023
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
The AND instruction is used in the series connection of A contact. The functions are to read out the status of present d
series connection contacts and perform the “AND” operation with the logical operation result obtained. The final result
will be store in the accumulative register.
Program Example:
Ladder diagram:
X1
X0
Y1
Instruction code:
Operation:
LDI
X1
Loading in contact B of X1
AND
X0
Connecting to contact A of X0 in series
OUT
Y1
Driving Y1 coil
Note: DVP-EH3 series PLCs whose version is 1.40 and DVP-SV2 series PLCs whose version is 1.20 support the
operands X, Y, M, and S. These operands can be qualified by E or F, e.g. AND X0E1.
Mnemonic
Function
Program steps
ANI
Series connection- B contact
1
Operand
X0 ~ X377
Y0 ~ Y377
Controllers
ES
M0 ~ M4095 S0 ~ S1023
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
The ANI instruction is used in the series connection of B contact. The functions are to read out the status of present
designated series connection contacts and perform the “AND” operation with the logical operation result obtained.
The final result will be store in the accumulative register.
3-4
DVP-PLC Application Manual
3 Basic Instructions
Program Example:
Ladder diagram:
X1
X0
Y1
Instruction code:
Operation:
LD
X1
Loading in contact A of X1
ANI
X0
Connecting to contact B of X0 in series
OUT
Y1
Driving Y1 coil
Note: DVP-EH3 series PLCs whose version is 1.40 and DVP-SV2 series PLCs whose version is 1.20 support the
operands X, Y, M, and S. These operands can be qualified by E or F, e.g. ANI X0E1.
Mnemonic
Function
Program steps
Parallel connection- A contact
OR
Operand
X0 ~ X377
Y0 ~ Y377
Controllers
ES
1
EX
M0 ~ M4095 S0 ~ S1023
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
The OR instruction is used in the parallel connection of A contact. The functions are to read out the status of present
designated parallel connection contacts and perform the “OR” operation with the logical operation result obtained.
The final result will be store in the accumulative register.
Program Example:
Ladder diagram:
X0
Y1
X1
Instruction code:
Operation:
LD
X0
Loading in contact A of X0
OR
X1
Connecting to contact A of X1 in parallel
OUT
Y1
Driving Y1 coil
Note: DVP-EH3 series PLCs whose version is 1.40 and DVP-SV2 series PLCs whose version is 1.20 support the
operands X, Y, M, and S. These operands can be qualified by E or F, e.g. OR X1E1.
Mnemonic
Function
Program steps
ORI
Parallel connection- B contact
1
Operand
Controllers
ES
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
X0 ~ X377
Y0 ~ Y377
M0 ~ M4095
S0 ~ S1023
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
The OR instruction is used in the parallel connection of B contact. The functions are to read out the status of present
designated parallel connection contacts and perform the “OR” operation with the logical operation result obtained.
The final result will be store in the accumulative register.
DVP-PLC Application Manual
3-5
3 Basic Instructions
Program Example:
Ladder diagram:
X0
Y1
X1
Instruction code:
Operation:
LD
X0
Loading in contact A of X0
ORI
X1
Connecting to contact B of X1 in parallel
OUT
Y1
Driving Y1 coil
Note: DVP-EH3 series PLCs whose version is 1.40 and DVP-SV2 series PLCs whose version is 1.20 support the
operands X, Y, M, and S. These operands can be qualified by E or F, e.g. ORI X1E1.
Mnemonic
Function
Program steps
Series connection- loop blocks
ANB
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
N/A
Operand
Explanations:
To perform the “AND” operation of the preserved logic results and content in the accumulative register.
Program Example:
Ladder diagram:
X0 ANB X1
Y1
X2
X3
Block A Block B
Instruction code:
Operation:
LD
X0
Loading in contact A of X0
ORI
X2
Connecting to contact B of X2 in parallel
LDI
X1
Loading in contact B of X1
OR
X3
Connecting to contact A of X3 in parallel
ANB
OUT
Mnemonic
ORB
Function
Connecting circuit block in series
Y1
Driving Y1 coil
Program steps
Parallel connection- loop
blocks
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
N/A
Operand
Explanations:
To perform the “OR” operation of the preserved logic results and content in the accumulative register.
Program Example:
Ladder diagram:
X0
X1 Block A
Y1
X2
X3
ORB
Block B
Instruction code:
Operation:
LD
X0
Loading in contact A of X0
ANI
X1
Connecting to contact B of X1 in series
LDI
X2
Loading in contact B of X2
AND
X3
Connecting to contact A of X3 in series
ORB
OUT
3-6
Connecting circuit block in parallel
Y1
Driving Y1 coil
DVP-PLC Application Manual
3 Basic Instructions
Mnemonic
Function
MPS
Store the current result of
the internal PLC operations
Program steps
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
N/A
Operand
Explanations:
To save the content in the accumulative register into the operational result (the pointer of operational result will plus
1).
Mnemonic
Function
MRD
Reads the current result of
the internal PLC operations
Program steps
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
N/A
Operand
Explanations:
To read the operational result and store it into the accumulative register (the pointer of operational result stays intact).
Mnemonic
Function
MPP
Pops (recalls and removes)
the currently stored result
Program steps
1
Controllers
ES
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
N/A
Operand
Explanations:
To retrieve the previous preserved logical operation result and store it into the accumulative register (the pointer of
operational result will minus 1).
Program Example:
Ladder diagram:
MPS
X0
X1
Y1
Operation:
LD
Loading in contact A of X0
X0
Saving into stack
MPS
AND
X1
Connecting to contact A of X1 in series
M0
OUT
Y1
Driving Y1 coil
Y2
MRD
X2
MRD
Instruction code:
MPP
END
Reading from stack
AND
X2
Connecting to contact A of X2 in series
OUT
M0
Driving M0 coil
Reading from stack and pop pointer
MPP
OUT
END
DVP-PLC Application Manual
Y2
Driving Y2 coil
Program ends
3-7
3 Basic Instructions
Mnemonic
Function
Program steps
Output coil
OUT
Operand
Controllers
ES
1
X0 ~ X377
Y0 ~ Y377
-
EX
M0 ~ M4095 S0 ~ S1023
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
-
-
Explanations:
1. To output the logical operation result before OUT instruction into a designated device.
2. Actions of coil contact:
OUT instruction
Operational result
Contact
Coil
A contact (normally open)
B contact (normally closed)
FALSE
Off
Off
On
TRUE
On
On
Off
Program Example:
Ladder diagram:
X0
X1
Y1
Instruction code:
Operation:
LDI
X0
Loading in contact B of X0
AND
X1
Connecting to contact A of X1 in series
OUT
Y1
Driving Y1 coil
Note: DVP-EH3 series PLCs whose version is 1.40 and DVP-SV2 series PLCs whose version is 1.20 support the
operands Y, M, and S. These operands can be qualified by E or F, e.g. OUT Y1E2.
Mnemonic
SET
Operand
Function
Program Steps
Latched (On)
Controllers
ES
1
X0 ~ X377
Y0 ~ Y377
-
M0 ~ M4095 S0 ~ S1023
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
-
-
Explanations:
When the SET instruction is driven, its designated device will be “On” and keep being On both when SET instruction
is still being driven or not driven. Use RST instruction to set “Off” the device.
Program Example:
Ladder diagram:
X0
Y0
SET
Y1
Instruction code:
Operation:
LD
X0
Loading in contact A of X0
ANI
Y0
Connecting to contact B of Y0 in series
SET
Y1
Y1 latched (On)
Note: DVP-EH3 series PLCs whose version is 1.40 and DVP-SV2 series PLCs whose version is 1.20 support the
operands Y, M, and S. These operands can be qualified by E or F, e.g. SET Y1E2.
3-8
DVP-PLC Application Manual
3 Basic Instructions
Mnemonic
Function
Program steps
Clear the contacts or
the registers
RST
X0 ~ X377 Y0 ~ Y377
Operand
-
Controllers
ES
1
M0 ~
M4095
EX
SS
SA
SX
SC
S0 ~ S1023 T0 ~ T255 C0 ~ C255
EH2
EH3 SV2
D0 ~
D9999
E0 ~ E7
F0 ~ F7
SV
Explanations:
1. When the RST instruction is driven, the actions of the designated devices are:
Device
Status
Y, M, S,
Coil and contact will be set to “Off”
Present values of the timer or counter will be set to “0”, and the coil and contact will be set to
T, C
“Off”
D, E, F
The content will be set to “0”.
2. If RST instruction is not being executed, the status of the designated device will stay intact.
Program Example:
Ladder diagram:
X0
RST
Y5
Instruction code:
Operation:
LD
X0
Loading in contact A of X0
RST
Y5
Resetting contact Y5
Note: DVP-EH3 series PLCs whose version is 1.40 and DVP-SV2 series PLCs whose version is 1.20 support the
operands Y, M, and S. These operands can be qualified by E or F, e.g. RST Y5E2.
Mnemonic
Function
Program steps
16-bit timer
TMR
Controllers
ES
4
T-K
T0 ~ T255, K0 ~ K32,767
T-D
T0 ~ T255, D0 ~ D9999
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
Operand
Explanations:
When TMR instruction is executed, the designated coil of the timer will be On and the timer will start to time. When the
set value in the timer is reached (present ≥ set value), the contact will be:
NO (Normally Open) contact
Open collector
NC (Normally Closed) contact
Close collector
Program Example:
Ladder diagram:
X0
TMR
T5
K1000
Instruction code:
Operation:
LD
X0
Loading in contact A of X0 T5 timer
TMR
T5 K1000
Set value in timer T5 as K1,000
Remarks:
See the specification of each model for the range of operand T.
DVP-PLC Application Manual
3-9
3 Basic Instructions
Mnemonic
Function
Program steps
ATMR
16-bit contact type
timer counter
5
T-K
T0 ~ T255,K0 ~ K32,767
T-D
T0 ~ T255, D0 ~ D11999
Controllers
ES
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
Operand
Explanations:
1.
The instruction ATMR corresponds to the combination of AND and TMR. If the contact preceding ATMR is ON,
the timer specified will begin to count. When the count value is greater than or equal to the setting value, the
AND contact is ON. If the contact preceding ATMR is not ON, ATMR will automatically clear the count value.
Program Example:
Ladder diagram:
X0
ATMR
T5
Y0
K1000
Instruction code:
Operation:
LD
X0
Loading in contact A of X0
ATMR
T5 K100
The setting value of T5 is K100.
OUT
Y0
When the count value is greater than or equal
to the setting value, Y0 is ON.
Remarks:
1.
Please refer to specifications for the model used for more information about the timers which can be used.
2.
EH3 series PLCs whose version is 1.40 and SV2 series PLCs whose version is 1.20 support ATMR.
Mnemonic
Function
Program steps
16-bit counter
CNT
Controllers
ES
1
C-K
C0 ~ C199, K0~K32,767
C-D
C0 ~ C199, D0 ~ D9999
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
Operand
Explanations:
3.
When the CNT instruction goes from Off to On, the designated counter coil will be driven, and the present value
in the counter will plus 1. When the counting reaches the set value (present value = set value), the contact will
be:
4.
NO (Normally Open) contact
Open collector
NC (Normally Closed) contact
Close collector
If there are other counting pulse inputs after the counting reaches its target, the contact and present value will
stay intact. Use RST instruction to restart or reset the counting.
Program Example:
Ladder diagram:
X0
CNT
3-10
C20
K100
Instruction code:
Operation:
LD
X0
Loading in contact A of X0
CNT
C20 K100 Set value in counter C20 as K100
DVP-PLC Application Manual
3 Basic Instructions
Mnemonic
Function
Program steps
32-bit counter
DCNT
Controllers
ES
1
EX
SS
SA
SX
C-K
C200 ~ C255, K-2,147,483,648 ~ K2,147,483,647
C-D
C200 ~ C255, D0 ~ D9999
SC
EH2
SV
EH3 SV2
Operand
Explanations:
1.
DCNT is the instruction for enabling the 32-bit high-speed counters C200 ~ C255.
2.
For general purpose addition/subtraction counters C200 ~ C234, when DCNT goes from Off to On, the present
value in the counter will pulse 1 (counting up) or minus 1 (counting down) according to the modes set in special
M1200 ~ M1235.
3.
For high-speed addition/subtraction counters C235 ~ C255, when the high-speed counting pulse input goes
from Off to On, the counting will start its execution. For the input terminals (X0 ~ X17) and counting methods
(counting up/down) of the high-speed counter, see Chapter 2.7 Numbering and Function of Counter [C] for more
details.
4.
When DCNT is Off, the counting will stop, but the existing present value in the counter will not be cleared. To
clear the present value and the contact, you have to use the instruction RST C2XX. Use externally designated
input points to clear the present values and contacts of high-speed addition/subtraction counters C235 ~ C255.
Program Example:
Ladder diagram:
M0
DCNT
C254
Mnemonic
K1000
Instruction code:
Operation:
LD
M0
Loading in contact A of M0
DCNT
C254 K1000 Set value of counter C254 as K1,000
Function
MC / MCR
Master control
Start/Reset
Operand
N0 ~ N7
Program steps
1
Controllers
ES
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
Explanations:
1.
MC is the main-control start instruction. When MC instruction is executed, the execution of instructions between
MC and MCR will not be interrupted. When MC instruction is Off, the actions of the instructions between MC and
MCR are:
Explanation
Instruction type
General purpose timer
Present value = 0
Coil is Off, No action for the contact
Accumulative timer
Coil is Off, present value and contact stay intact
Subroutine timer
Present value = 0
Coil is Off, No action for the contact
Counter
Coil is Off, present value and contact stay intact
Coils driven by OUT instruction
All Off
DVP-PLC Application Manual
3-11
3 Basic Instructions
Explanation
Instruction type
Devices driven by SET and RST
instructions
Stay intact
All disabled.
The FOR-NEXT nested loop will still execute back and forth for N times.
Application instructions
Instructions between FOR-NEXT will act as the instructions between MC
and MCR.
2.
MCR is the main-control end instruction that is placed in the end of the main-control program. There should not
be any contact instructions prior to MCR instruction.
3.
MC-MCR main-control program instructions support the nested program structure (max. 8 layers) and please
use the instruction in the order N0 ~ N7.
Program Example:
Ladder diagram:
X0
MC
N0
X1
Y0
X2
MC
N1
X3
Y1
MCR
N1
MCR
N0
MC
N0
X10
X11
Y10
MCR
Mnemonic
Operation:
LD
MC
LD
OUT
:
LD
MC
LD
OUT
:
MCR
:
MCR
:
LD
MC
LD
OUT
:
MCR
X0
N0
X1
Y0
Loading in A contact of X0
Enabling N0 common series connection contact
Loading in A contact of X1
Driving Y0 coil
X2
N1
X3
Y1
Loading in A contact of X2
Enabling N1 common series connection contact
Loading in A contact of X3
Driving Y1 coil
N1
Disabling N1 common series connection contact
N0
Disabling N0 common series connection contact
X10
N0
X11
Y10
Loading in A contact of X10
Enabling N0 common series connection contact
Loading in A contact of X11
Driving Y10 coil
N0
Disabling N0 common series connection contact
Function
Program steps
Rising-edge detection
operation
LDP
Operand
N0
Instruction code:
X0 ~ X377 Y0 ~ Y377 M0 ~ M4095 S0 ~ S1023
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
The method of using LDP is the same as using LD, but the actions of the two instructions differ. LDP saves the current
content and store the detected status of rising-edge to the accumulative register.
3-12
DVP-PLC Application Manual
3 Basic Instructions
Program Example:
Ladder diagram:
X0
X1
Y1
Instruction code:
Operation:
LDP
X0
Starting X0 rising-edge detection
AND
X1
Series connecting A contact of X1
OUT
Y1
Driving Y1 coil
Remarks:
1.
See the specification of each model for the range of operands.
2.
If the status of a designated rising-edge is On before the PLC is powered, the contact of the rising-edge will be
TRUE after PLC is powered.
Mnemonic
Function
Program steps
Falling-edge detection
operation
LDF
Operand
X0 ~ X377
Y0 ~ Y377 M0 ~ M4095 S0 ~ S1023
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
The method of using LDF is the same as using LD, but the actions of the two instructions differ. LDF saves the current
content and store the detected status of falling-edge to the accumulative register.
Program Example:
Ladder diagram:
X0
X1
Y1
Mnemonic
Operation:
LDF
X0
Starting X0 falling-edge detection
AND
X1
Series connecting A contact of X1
OUT
Y1
Driving Y1 coil
Function
Program steps
Rising-edge series
connection
ANDP
Operand
Instruction code:
X0 ~ X377 Y0 ~ Y377
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
M0 ~
M4095
S0 ~ S1023
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
ANDP instruction is used in the series connection of the contacts’ rising-edge detection.
Program Example:
Ladder diagram:
X0
X1
Y1
DVP-PLC Application Manual
Instruction code:
Operation:
LD
X0
Loading in A contact of X0
ANDP
X1
X1 rising-edge detection in series connection
OUT
Y1
Driving Y1 coil
3-13
3 Basic Instructions
Mnemonic
Function
Falling-edge series
connection
ANDF
Operand
Program steps
X0 ~ X377 Y0 ~ Y377
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
M0 ~
M4095
S0 ~ S1023
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
ANDF instruction is used in the series connection of the contacts’ falling-edge detection.
Program Example:
Ladder diagram:
X0
X1
Y1
Mnemonic
Function
ORP
Rising-edge parallel
connection
Operand
Instruction code:
Operation:
LD
X0
Loading in A contact of X0
ANDF
X1
X1 falling-edge detection in series connection
OUT
Y1
Drive Y1 coil
Program steps
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
X0 ~ X377
Y0 ~ Y377
M0 ~
M4095
S0 ~
S1023
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
The ORP instructions are used in the parallel connection of the contact’s rising-edge detection.
Program Example:
Ladder diagram:
X0
Y1
X1
Instruction code:
Operation:
LD
X0
Loading in A contact of X0
ORP
X1
X1 rising-edge detection in parallel connection
OUT
Y1
Driving Y1 coil
Mnemonic
Function
Program steps
ORF
Falling-edge parallel connection
1
Operand
X0 ~ X377
Y0 ~ Y377
Controllers
ES
M0 ~ M4095 S0 ~ S1023
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
Explanations:
The ORP instructions are used in the parallel connection of the contact’s falling-edge detection.
3-14
DVP-PLC Application Manual
3 Basic Instructions
Program Example:
Ladder diagram:
X0
Y1
X1
Mnemonic
Function
Instruction code:
Operation:
LD
X0
Loading in A contact of X0
ORF
X1
X1 falling-edge detection in parallel connection
OUT
Y1
Driving Y1 coil
Program steps
Rising-edge output
PLS
Operand
Controllers
ES
1
X0 ~ X377
Y0 ~ Y377
-
EX
M0 ~ M4095 S0 ~ S1023
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
-
-
-
Explanations:
When X0 goes from Off to On (rising-edge trigger), PLS instruction will be executed and S will send out pulses for
once of 1 scan time.
Program Example:
Ladder diagram:
X0
PLS
M0
SET
Y0
M0
Instruction code:
LD
X0
Operation:
PLS
M0
M0 rising-edge output
LD
M0
Loading in contact A of M0
SET
Y0
Y0 latched (On)
Loading in A contact of X0
Timing Diagram:
X0
1 scan time
M0
Y0
Mnemonic
PLF
Operand
Function
Program steps
Falling-edge output
X0 ~ X377
Y0 ~ Y377
-
Controllers
ES
1
M0 ~ M4095 S0 ~ S1023
-
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
T0 ~ T255
C0 ~ C255
D0 ~ D9999
-
-
-
Explanations:
When X0 goes from On to Off (falling-edge trigger), PLF instruction will be executed and S will send out pulses for
once of 1 scan time.
DVP-PLC Application Manual
3-15
3 Basic Instructions
Program Example:
Ladder diagram:
X0
PLF
M0
SET
Y0
M0
Instruction code:
Operation:
LD
X0
Loading in A contact of X0
PLF
M0
M0 falling-edge output
LD
M0
Loading in contact A of M0
SET
Y0
Y0 latched (On)
Timing Diagram:
X0
1 scan time
M0
Y0
Mnemonic
Function
Program steps
Program End
END
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
N/A
Operand
Explanations:
END instruction has to be placed in the end of a ladder diagram or instruction program. PLC will start to scan from
address 0 to END instruction and return to address 0 to restart the scan.
Mnemonic
Function
Program steps
No operation
NOP
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
N/A
Operand
Explanations:
NOP instruction does not conduct any operations in the program; therefore, after the execution of NOP, the existing
logical operation result will be kept. If you want to delete a certain instruction without altering the length of the program,
you can use NOP instruction.
Program Example:
Ladder diagram:
NOP instruction will be
omitted in the ladder diagram
Operation:
LD
Loading in B contact of X0
NOP
X0
NOP
OUT
X0
3-16
Instruction code:
No operation
Y1
Driving Y1 coil
Y1
DVP-PLC Application Manual
3 Basic Instructions
Mnemonic
INV
Function
Program steps
Inverting Operation
Controllers
ES
1
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
N/A
Operand
Explanations:
The logical operation result before INV instruction will be inverted and stored in the accumulative register.
Program Example:
Ladder diagram:
X0
Y1
Instruction code:
Operation:
LD
Loading in A contact of X0
X0
INV
Inverting the operation result
OUT
Mnemonic
P
Operand
Function
Y1
Driving Y1 coil
Program steps
Pointer
1
Controllers
ES
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
P0 ~ P255
Explanations:
Pointer P is used in API 00 CJ and API 01 CALL instructions. The use of P does not need to start from No. 0, and the
No. of P cannot be repeated; otherwise, unexpected errors may occur.
Program Example:
Ladder diagram:
X0
CJ
P10
Y1
Mnemonic
I
Operation:
LD
X0
Loading in A contact of X0
CJ
P10
From instruction CJ to P10
:
X1
P10
Instruction code:
P10
Pointer P10
LD
X1
Loading in A contact of X1
OUT
Y1
Driving Y1 coil
Function
Interruption program marker (I)
Program steps
1
Controllers
ES
EX
SS
SA
SX
SC
EH2
SV
EH3 SV2
I00□, I10□, I20□, I30□, I40□, I50□, I6□□, I7□□, I8□□
Operand
I010, I020, I030, I040, I050, I060, I110, I120, I130, I140, I150, I160, I170, I180
Explanations:
A interruption program has to start with a interruption pointer (I□□□) and ends with API 03 IRET. I instruction has to
be used with API 03 IRET, API 04 EI, and API 05 DI. See Chapter 2.9 for pointers of all DVP series PLCs.
DVP-PLC Application Manual
3-17
3 Basic Instructions
Program Example:
Ladder diagram:
Instruction code: Operation:
EI
X1
EI
Allowable range
for interruption
Y1
Enabling interruption
LD
X1
Loading A contact of X1
OUT
Y1
Driving Y1 coil
:
DI
DI
Pointer of
interruption
program
:
FEND
X2
I 001
Y2
Interruption
subroutine
IRET
FEND
Main program ends
I001
Interruption pointer
LD
X2
Loading in A contact of X2
OUT
Y2
Driving Y2 coil
:
IRET
3-18
Disabling interruption
Interruption return
DVP-PLC Application Manual
