Delta DVP40ES00R2, DVP32ES00R2, DVP24ES00T2, DVP14ES00T2, DVP32ES00T2 Instruction Sheet

http://www.delta.com .tw/industrialautomation/

2006-07-04

5011634301-YIE1

DVP-ES/EX

Programmable Logic

Controller

Instruction Sheet

1 WARNING

This Installation Sheet only provides descriptions for electrical specifications, function specificati ons,

installation & wiring, troubleshooting and peripherals. Other detail infromation about programming and

instructions, please see PLC Application Manual. For more information about the optional peripherals,

please refer to their individual instruction sheet or user manuals.

This is an OPEN TYPE PLC. The PLC should be kept in an enclosure away from airborne dust, high

humidity, electric shock risk and vibration. Also, it should be equipped with protective methods such as

some special tools or keys to open the enclosure, so as to avoid the hazard to users and the damage to

the PLC. The power must be OFF before any maintenance.

Never connect the AC main circuit power supply to any of the input/output terminals, as it will damage the

PLC. Check all the wiring prior to power up. To avoid any electromagnetic noise, make sure the PLC is

properly grounded

. Do NOT touch terminals when power on.

2 INTRODUCTION

2.1. Model Name Explanation and Peripherals

Thank you very much for purchasing Delta’s DVP-ES/EX Series PLC. DVP-ES/EX Series provide the main

processing units and extension units. The processing units offer 14~60 points and the extension units offer 8~32

points. The maximum input and output can be extended up to 128 points respectively. Also, it can be used on

various applications according to input and output points, power supply, digital input and output modules.

 Nameplate Explanation

PLC Model

Input Power Su pply Spec.

Output Module Spec.

Barcode and Serial Number

MCU Version

100~240Vac 50/60Hz 35VA MAX

2.0A 240Vac 50/60Hz RES LOAD

32ES00R2T5140004

VX.XX

32ES00R 2 T 5 14 0004

Production series

Production week

Production year (2005)

Production plant (Taoyuan)

Serial number of version

Production Model

 Model/Serial Number Explanation

DVP

2

E

: Main Processing Unit (MPU)

X

: Exten sion Un it

S

: Standa rd

X

: A/D, D/A Functions

M

: Digital Input

N

: Digital Output

P

: Digital Input/Output

2

: Advan ced Type

R

: Rela y

T

: Transi stor

N

: No Output Module

00 :

H TYPE

01

:

L TYPE

11

:

H TYPE

C

: Non-extended

Product Series

Points (Input + Output)

Models

Model Type

AC Input DC Input DC Input

 Peripherals

◎ DVP-HPP Series: Handheld Programmable Panel
◎ WPLSoft: DVP-PLC Programming Software Tool (Windows based software)
◎ DVPACAB115: 1.5M Cable (HPP  PLC, provided in DVP-HPP Series)
◎ DVPACAB215: 1.5M Cable (PC  PLC)
◎ DVPACAB230: 3.0M Cable (PC  PLC)
◎ DVPACAB315: 1.5M Cable (HPP  PC)
◎ DVPACAB403: 30cm Cable (Main processing unit  Extension unit, or Extension unit  Extension I/O

signal extension cable)

2.2. Product Profile and Outline

1. DIN rail clip 9. Input / Output

2. DIN rail (35mm)

10. Status indicators: POWER, RUN, and
ERROR

3. Direct mounting holes 11. Input / Output terminal cover

4. Communication Ports Cover (RS-232C) 12. Input / Output terminal cover

5. Extension Port indicators

13. Input / Output terminal nameplate
panel

6. Input / Output terminals

14. Input / Output terminal nameplate
panel

7. Input / Output terminals 15. RS-485 communication port

8. Input / Output indicators

2.3. DVP-ES/EX Series Models

◎ ES Standard Main Processing Units (MPU-00)

Input Unit Output Unit

Model Name Power

Point Type Point Typ e

Profile Profile Reference

DVP14ES00R2 8 6


DVP24ES00R2 16 8
DVP32ES00R2 16 16
DVP40ES00R2 24 16



DVP60ES00R2 36 24

Relay


DVP14ES00T2 8 6 
DVP24ES00T2 16 8

DVP32ES00T2 16 16

DVP40ES00T2 24 16



DVP60ES00T2

100~

240

VAC

36

DC Sink

or

Source

24

Transistor



◎ ES Standard Main Processing Units (MPU-01,11)

Input Unit Output Unit

Model Name Power

Point Type Point Type

Profile

DVP14ES01R2 8 6


DVP24ES01R2 16 8


DVP24ES11R2 16 8


DVP32ES01R2 16 16

Relay


DVP14ES01T2 8 6


DVP24ES01T2 16 8
DVP32ES01T2

24

VDC

16

DC Sink

or

Source

16

Transistor



 

 



◎ EX Special Function Main Processing Units (MPU-00, MPU-11)

Input Unit Output Unit

Point Type Point Type

Model Name Power

DI AI DI AI DO AO DO AO

Profile Reference

DVP20EX00R2 8 4 6 2 Re lay

DVP20EX00T2

100~

240

VAC

8 4 6 2 Transistor

DVP20EX11R2

24

VDC

84

DC Sink

or

Source

-20mA~20
mA

or

-10V ~ +10

V

6 2 Rela y

0~20mA

or

0～10V

◎ Digital I/O Extension Unit for DVP-ES/EX Series- 00

Input Unit Output Unit

Model Name Power

Point Ty pe Point Type

Profile Reference

DVP24XN00R 0 24

DVP24XP00R 16 8

DVP32XP00R 16 16

Relay

DVP24XN00T 0 24

DVP24XP00T 16 8

DVP32XP00T

100~

240

VAC

16

DC

Sink

or

Source

16

Transistor

◎ Digital I/O Extension Unit for DVP-ES/EX Series- 01 (L TYPE)

Input Unit Output Unit

Model Name Power

Point Ty pe Point Type

Profile Profile Reference

DVP16XM01N 16 0 None 

DVP16XN01R 0 16

DVP24XN01R 0 24

DVP24XP01R 16 8

DVP32XP01R 16 16

Relay

DVP16XN01T 0 16

DVP24XN01T 0 24

DVP24XP01T 16 8

DVP32XP01T

24

VDC

16

DC

Sink

or

Source

16

Transistor



 

◎ Digital I/O Extension Unit for DVP-ES/EX Series-11 (H TYPE)

Input Unit Output Unit

Model Name Power

Point Ty pe Point Type

Profile Profile Reference

DVP08XM11N 8 0 

DVP16XM11N 16 0

None



DVP08XN11R 0 8 

DVP16XN11R 0 16

DVP24XN11R 0 24



DVP08XP11R 4 4 

DVP24XP11R 16 8

DVP32XP11R 16 16

Relay



DVP08XN11T 0 8 

DVP16XN11T 0 16

DVP24XN11T 0 24



DVP08XP11T 4 4 

DVP24XP11T 16 8

DVP32XP11T

24

VDC

16

DC
Sink

or

Source

16

Transistor



 



3 SPECIFICATIONS

3.1. Function Specifications

Items Specifications Remarks

Control Method

Stored program, cyclic scan system

I/O Processing Method

Batch processing (when END instruction
is executed)

I/O refresh instruction is available

Execution Speed

Basic commands (several us)

Application instructions
(10 ~ hundreds us)

Program Language

Instruction, Ladder Logic, SFC Including Step instructions

Items Specifications Remarks

Program Capacity

3792 Steps Built-in EEPROM

Instructions

32 basic sequential instructions
(including STL / RET)

107 application instructions

Initial Step Point

10 points S0~S9

Zero Return Point

10 points S10~S19

Step Relays
(Latched)

General Step Point

108 points S20~S127

General

512+232 points M0~M511+M768~M999

Latched

256 points M512~M767

Auxiliary
Relays

Special

280 points M1000~M1279
64 points T0~T63 (100 ms time base)

63 points

T64~T126 (10 ms time base, when
M1028 is ON)

Timers Digital

1 points T127 (1 ms time base)

General

112 points C0~C111

Latched

16 points C112~C127

Counters

High Speed

13 points 1 phase 20KHz, 2 phase 5KHz C235~C254 (all latched type)

General

408 points D0 ~ D407

Latched

192 points D408~D599

Data Registers

Special

200 points

D1000~D1143、D1256~D1311

Pointers P

64 points P0~P63

Index Registers E / F

2 points

E(=D1028)，F(=D1029)

Decimal K

16 bit: -32768~+32767 32 bit: -2147483648~+2147483647

Constants

Hexadecimal H

16 bit: 0000~FFFF 32 bit: 00000000~FFFFFFFF

Serial Communication

2 Ports is provided. RS-232C: Program read/write communication port,
RS-485: General function communication port (controlled by RS instruction);
Special drive instructions for Delta AC drive are also supported.

Protection Features

Password, I/O examination, Execution time, Illegitimate instruction or operand

Monitor / Debug

Program execution time display, Bit/Word, Device setting

＊ Note: For more information about special relays and data registers, please refer to the Delta PLC Application Manual.

3.2. Electrical Specifications

Model

Item

DVP-

14ES00

□

DVP-

24ES00

□

DVP-

32ES00

□

DVP-

40ES00

□

DVP-

60ES00

□

DVP-

20EX00

□

DVP-

14ES01

□

DVP-

24ES□□

DVP-

32ES01

□

DVP-

20EX11□

Power Supply
Voltage

100~240VAC (-15%~10%), 50/60Hz ± 5%

24VDC (-15%~10%)

Operation
Specification

The PLC start to operate at power supply of 95~100VAC.
If the voltage of power supply drops to 70VAC, the PLC will stop.
Maximum power loss time is 10ms or less.

Maximum power loss time is 5ms or less.

Fuse

2 A / 250VAC 2 A / 250VAC

Power
Consumption

20 VA 25VA 30VA 30VA 35VA 30 VA 5.5 W 6.5 W 8 W 8 W

DC24V Supply
Current

400mA 400mA 400mA 400mA 400mA 400mA

— — — —

Power
Protection

DC24V output short circuit DC24V input polarity

Voltage
Withstand

1500VAC(Primary-secondary), 1500VAC(Primary-PE), 500VAC(Secondary-PE)

Insulation
Resistance

> 5 MΩ at 500VDC (Between all inputs / outputs and earth)

Noise Immunity

ESD: 8KV Air Discharge
EFT: Power Line: 2KV, Digital I/O: 1KV, Analog & Communication I/O: 250V
RS: 26MHz~1GHz, 10V/m

Grounding

The diameter of grounding wire cannot be smaller than the wire diameter of terminals L and N (All DVP units
should be grounded directly to the ground pole).

Environment

Operation: 0°C ~55°C (Temperature), 50~95% (Humidity), Pollution degree2; Storage: -25°C ~70°C
(Temperature), 5~95% (Humidity)

Vibration / Shock
Resistance

Standard: IEC1131-2, IEC 68-2-6（TEST Fc）/ IEC1131-2 & IEC 68-2-27 (TEST Ea)

Weight (g)

400 552 580 596 750 536 260 414 430 386

Input Point Electrical Specifications

Input Point Type

Digital Input Analog Input (EX)

Input Type

DC (SINK or SOURCE)

Input Current

24VDC 5mA

Voltage input: -10V~+10V, Input Resistance:
112KΩ
Current input: -20mA~+20mA, Input
Resistance: 250Ω

Off→On above 16VDC

Active Level
(Analog input resolution)

On→Off below 14.4VDC

Voltage input: 10bit
Current input: 10 bit

Reaction Time
(Conversion Sampling Time)

About 10ms (An adjustment range of 0~15ms
could be selected through D1020 and D1021)

5ms (Time could be adjusted through D1118)

Output Point Electrical Specifications

Output Point Type

Relay-R Transistor-T

Current Specification

2A/1 point (5A/COM)

55°C 0.1A/1point, 50°C 0.15A/1 point
45°C 0.2A/1 point, 40°C 0.3A/1 point (2A/COM)

Voltage Specification

Below 250VAC, 30VDC 30VDC

75VA (Inductive)

Maximum Load

90 W (Resistive)

9W/1 point

Reaction Time

About 10 ms

Off→On 20us On→Off 30us

3.3. AD/DA Specifications

Analog Input (A/D) Analog Output (D/A)

Items

Voltage Input Current Input Voltage Output Current Output

Analog I/O Range

±10V ±20 mA 0 ~ 10V 0 ~ 20 mA

Digital Conversion
Range

-512~+511 -512~+511 0 ~ 255 0 ~ 255

Resolution

10 bits(1

LSB

=19.53125 mV) 10 bits (1

LSB

=39.0625 μA) 8 bits(1

LSB

=39.0625 mV) 8 bits (1

LSB

=78.125 μA)

Input Impedance

> 112 KΩ 250Ω －

Analog Input (A/D) Analog Output (D/A)

Items

Voltage Input Current Input Voltage Output Current Output

Output Impedance

－ 0.5Ωor lower

Tolerance Carried
Impedance

－ 1KΩ~2MΩ 0～500Ω

Overall Accuracy

Non-linear accuracy: ±0.5% of full scale within the range of PLC operation temperature

Maximum deviation: ±1% of full scale at 20mA and +10V

Reaction Time

2ms × channels

Absolute Input
Range

±15 V ±32 mA －

Digital Data Format

2’s complementary of 16-bit, 10 Significant Bits 2’s complementary of 16-bit, 8 Significant Bits

Average Function

Provided －

Isolation Method

Isolation between digital area and analog area. But no isolation among channels.

Protection

Voltage output has short circuit protection but a long period of short circuit may cause internal wire

damage and current output break.

External Wiring
Diagram

CH0

CH3

56K

56K

28K

28K

250

V+

V-

I+

I-

-10V~+10V

-20mA~+20mA

Volta

g

e Input

Current Input

Grounding

Grounding

CH0

CH1

V+

V-

I+

I-

Grounding

AC Drive

4 INSTALLATION & WIRING

 Dimensions

Model Name (mm) H H1 W W1

W2

(H Type)

W3

(L Type)

DVP14ES00(01)[11]R2/T2 100 95 99 104 82 50

DVP24ES00(01)[11]R2/T2 100 95 150 155 82 50

DVP32ES00(01)[11]R2/T2 100 95 150 155 82 50

DVP40ES00R2/T2 100 95 150 155 82 -

DVP60ES00[11]R2/T2 90 85.5 180.5 185 89.6 -

DVP20EX00[11]R2/T2 100 95 150 155 82 -

W2

H

W1

DVP

W3

H1

W

 Terminal Wiring

14ES

X7X6X5

X4

X3X2X1X0

Y0 Y1

Y2

Y3

C2C1C0

( AC Power IN, DC Signal IN )

00

01

S/S

( DC Power IN, DC Signal IN )

Y0

Y1

C0

C1

C3

X4S/S

X0

Y4

Y5

20EX

00

X7X6X5X4

X3X2X1X0

Y0 Y1

Y2

Y3 Y4

Y5C1C0

( AC Power IN, DC Signal IN )

S/S

11

( DC Power IN, DC Signal IN )

24ES

X17X16X15X14X13X12X11X10

X7X6X5X4X3X2X1X0

Y0 Y1

Y2

Y3

Y4 Y5

Y6

C6C2C1C0

( AC Power IN, DC Signal IN )

00

S/S

01

S/S

( DC Power IN, DC Signal IN )

Y0

Y1 Y2

C0

C1

Y7

C3 C4 C5 C7

32ES

00

X17X16X15X14X13X12X11X10

X7X6X5X4X3X2X1X0

Y0 Y1

Y2 Y3

Y4 Y5

Y6 C3C2C1C0 Y7 Y12 Y13 Y16 Y17

Y15Y14Y11Y10

( AC Power IN, DC Signal IN )

S/S

01

S/S

( DC Power IN, DC Signal IN )

Y0

Y1 Y4

C0 Y2

Y3

40ES

X16X14X12X10X6X4X2X0

X17X15X13X11X7X5X3X1

Y0

Y1 Y3

C1 C3Y7Y2 Y5 Y10 Y12 Y15 Y17

Y14Y13Y11Y6

( AC Power IN, DC Signal IN )

S/S

X21 X23 X25

X20 X22 X24

X27

X26

C0

Y16C2Y4

60ES

S/S X22 X23 X24 X25 X26 X27 X30X31 X32 X33 X34 X35X36 X37X40 X41 X42 X43

X21X20X17X16X15X14X13X12X11X10X7X6X5X4X3X2X1X0

Y0 Y1 Y2 Y3 Y4 Y5

Y6C4C3C2C1C0 Y7 C5 Y12 Y13 Y16 Y17 Y22 Y23C6 C7 C8 Y26 Y27

Y25Y24Y21Y20Y15Y14Y11Y10

( AC Power IN, DC Signal IN )

00

 PLC Mounting Arrangements and Installation Notes

 DIN Rail Installation

The DVP-PLC can be secured to a cabinet by using the DIN rail that
is 35mm high with a depth of 7.5mm. When mounting the PLC on the
DIN rail, ensure to use the end bracket to stop any side-to-side
motion of the PLC, thus to reduce the chance of the wires being
pulled loose. On the bottom of the PLC is a small retaining clip. To
secure the PLC to the DIN rail, place it onto the rail and gently push
up on the clip. To remove it, use a slotted screwdriver, place it on the
groove of the retaining clip and press gently, then pull down on the
retaining clip and gently pull the PLC away from the DIN rail.

For heat dissipation,ensure to
provide a minimum clearance of
50mm between the unit and all
sides of the cabinet. (as the figure
shown below)

DVP MPU

> 50mm> 50mm

> 50mm

> 50mm

 Direct mounting : Use the specified dimensions and install with M4 screws.

 Wiring

To suit M3.5 screw terminals

Below 6.2

Below 6.2

1. Please use O-type or Y-type terminals for I/O wiring terminals. The specification for the
terminals is shown as the figure on the left. PLC terminal screws should be tightened
to between 5~8 kg-cm (4.3~6.9 in-lbs). Only can use 60/75°C copper conducting wire.

2. DO NOT wire to the No Function terminals ‧ . I/O signal wires or power supply
should not run through the same multi-wire cable or conduit.

3. When tightening the screws and performing the wiring, please avoid that metallic

particles fell into PLC. After completing wiring, please remove the label which is used
to obstruct the metallic particles on the ventilation hole for well heat dissipation.

 Installation Notes

Incorrect installation may result in a PLC malfunction or premature failure of the PLC. Ensure to observe the
following items when selecting a mounting location.

1. Do not mount the PLC in a location subjected to corrosive or flammable gases, liquids, or airborne dust or
metallic particles.

2. Do not mount the PLC in a location where temperatures and humidity will exceed specification.

3. Do not mount the PLC in a location where vibration and shock will exceed specification.

 Power Input Wiring

There are two power inputs provided in DVP series PLC, AC input and DC input. Please pay particular attention
to the following notes:

1. Connect the AC input (100VAC~240VAC) to terminals L and N. Any AC110V or AC220V connected to the
+24V terminal or input points will permanently damage the PLC.

2. The AC power inputs for the MPU and the I/O Expansion Unit should be ON or OFF at the same time.

3. Please use wires of 1.6mm or above for the grounding of the MPU.

4. If the power-cut time is less than 10ms, the PLC still operates unaffectedly. If the power-cut time is too long
or the power voltage drops, the PLC will stop operating and all the outputs will be OFF. Once the power is
restored, the PLC will return to operate automatically. (There are latched auxiliary relays and registers
inside of the PLC, please be aware when programming.)

AC Input Type

S/S X0 X1 X2

24G

N

L

DC/DC

2.0A

5V

100~240VAC

The +24V supply output is rated at 0.4A from MPU. DO NOT connect external power supply to this
terminal. Moreover, it takes 5~7mA to drive each input point, so total of 100mA is needed for 16 input
points. As a result, the output loads of +24V should not exceeds 300mA.

5. When DC voltage is supplied to the PLC, ensure the power is at terminals 24VDC and 0V (power range is

20.4VDC~26.4VDC). When the voltage is lower than 17.5VDC, PLC will stop operating, all outputs will turn
OFF and the ERROR LED will flash continuously.

DC Input Type

S/S X0 X1 X2+24V 24G

OV24VDC

DC/DC

2.5A

5V

20VDC~26VDC

 Safety Wiring

Since the PLC is in control of numerous devices, operation of either one device could affect the operation of other
devices, therefore the breakdown of either one device would consequently be detrimental to the whole auto
control system, and danger will thus be resulted. Please use the recommended wiring below for the power input:



Power supply for AC loads



Fuse for circuit protection (3A Limit)



Power On pilot indicator



Emergency stop: PLC must provide a quick manual method to
disconnect all system power.



Circuit isolation device (System Power Disconnect): Utilize the
electromagnetic contactor and the relay to be the isolation unit of the
power circuit to prevent the possible instability of the system when the
power is supplied on and off.



DVP PLC MPU (main processing unit)



Grounding resistance: 100Ω or less

OV24VDC

MC

MC

NL

1

1

2

3

4

5

66

7

8

Guard
Limit



Power supply: AC: 100~240VAC, 50/60Hz, DC: 24VDC

 Input Point Wiring

The input signal of the input point is the DC power DC input. There are two types of DC type wiring: SINK and
SOURCE, defined as follows:

◎

Definition

Sink = Current flows

into the common

terminal S/S

S/S

X0

Sinking

Source = Current

flows out of the

common terminal S/S

S/S

X0

Sourcing

◎ Wiring

Input Point Loop Equivalent Circuit Wiring Loop

DC Type

（DC Signal IN）

SINK Mode

+24V

24G

S/S

X0

24VDC

SINK

+5V

+24V

24G

Sink Type

X1 X2S/S X0

Input Point Loop Equivalent Circuit Wiring Loop

DC Type

（DC Signal IN）

SOURCE Mode

+24V

24G

S/S

X0

24VDC

SOURCE

+5V

+24V

24G

Source Type

X1 X2S/S X0

◎ Practical Rela y Output Wiring



Surge absorbing diode: increases relay contact life



Emergency stop: use an external switch



Fuse: use the fuse with a 5~10A capacity at the common end of the output
contact to protect the output circuit.



Surge absorber: reduces noise on AC inductive loads



Unused terminal: do not connect



DC supply



Indicator: neon indicator



AC supply



Incandescent lamp (resistive loading)

C0 Y0 Y1 C1 Y4 Y5 Y6 Y7

5

MC1

MC2

2

6

3

1

9

10

7

4

3

8

2



Mutually exclusive outputs: use external hardware interlocks, as well as
those in the PLC program, for maximum safety.

◎ Practical Transistor Output Wiring



DC supply



Emergency stop



Fuse for circuit protection



As all outputs of the transistor modules are Open Collectors, if the setting of
Y0 is pulse train output (using PLSY command), its pull-up resistor must
remain an output current of greater than 0.1A for normal operation of the
transistor modules.



As all outputs of the transistor modules are Open Collectors, if the setting of
Y1 is pulse train output (using PWM command), its pull-up resistor must
remain an output current of greater than 0.1A for normal operation of the
transistor modules.



Mutually exclusive outputs: use external hardware interlocks, as well as
those in the PLC program, for maximum safety.

5

MC1

MC2

2

3

1

C0 Y0 Y1 C1 Y4 Y5 Y6 Y7

4

6 76

3



Unused terminal: do not connect

5 TRIAL RUN

 Power Indication

1. The “POWER” LED at the front of the MPU or the Extension Units will be lit (in green) if the power is on. If the
indicator is not on when the MPU is powered up, it means that there is abnormal condition on the DC power
supply of the PLC. It is thus necessary to check the wiring on terminals +24V and 0V. If the ERROR LED is
blinking swiftly, it indicates that the +24V power supply of the PLC is insufficient.

2. The “LOW V.” LED on the Expansion Unit is an indication that the input power voltage is insufficient, thus all
outputs of the expansion unit should be turned off.

 Operation and Test

1. If the ERROR LED of the MPU is not blinking, use the peripheral device to give the RUN command, and the

RUN indicator will then be on.

2. HPP could be utilized to monitor the timer (T), the counter (C) and the data register (D) during operation, and
moreover, to force the output contacts to conduct the On/Off action. If the ERROR LED is on (but not blinking),
it indicates that the setting of the user’s program has exceeded the preset overtime limit, thus users have to
double check the program and perform the On/Off function again. (The PLC is at this moment back to STOP
status automatically).

 PLC Input/Output Reaction Time:

The total reaction time from the input signal to the output operation is calculated as follows:
Reaction Time = input delay time + program scan time + output delay time

Input delay time

Default 10ms. Please refer to the usage of special registers D1020~D1021.

Program scan time

Please refer to the usage of special register D1010.

Output delay time

Relay module: 10ms. Transistor module: 20~30us.

6 TROUBLESHOOTING

udge the errors by the indicators on the front panel. When errors occurred on DVP series PLC, please check:

☼ “POWER” LED

There is a “POWER” LED at the front of the MPU. The “POWER” LED will be lit (in green) when the power in
connected to MPU. If the indicator is not on when the MPU is powered up and with the input power being normal,
it indicates that the PLC is out of order. Please have this machine replaced or repaired at a distributor near you.

☼ PLC “RUN” LED

Identify the status of the PLC. When the PLC is in operation, this light will be on, and the user could thus use HPP
or the editing program of the ladder diagram to give commands to make the PLC “RUN” or “STOP”.

☼ “ERROR” LED

If an incorrect program is input to the MPU, or the instruction and the device exceed the allowable range, the
indicator will blink. At this moment, the user should check the error code saved in the MPU data register D1004 to
correct the program. Find out the cause of the error and modify the programs. Then, re-send the correct program
to the MPU.

If the ERROR LED is blinking swiftly, it suggests that the +24VDC power supply of the PLC is insufficient. Please
check whether the power supply of 24VDC is normal or not.

When the ERROR LED is on (not blinking), it indicates that the execution time of the program loop has exceeded
the time-out setting (set by D1000). Please check the program loop or use ”WDT” instruction to solve the problem.
When the ERROR LED is on, please power down the MPU and start up it one time, and then check if the RUN
LED is off. If the RUN LED is not off, please check if there is any noise and interference and check if any
conductive material falling into the PLC.

☼ “Input” LED

The On/Off signals of the input point could be displayed through the “Input” LED. Also, the status signal of the
input point could be monitored through the device monitoring function of HPP. As long as the input point is
activated, the LED is on. Therefore, if an error is detected, please check HPP, the LED indicator and the input
signal circuits. Please pay particular attention to check if an electrical switch with significant leakage current is
used as it often results in the unexpected operation of input point.

☼ “Output” LED

Output LED indicates if the output signals are on or off. Please check the following items when the LED On/Off
indication does not correspond to the commands:

1. Output contacts may be melted and stuck together due to a short circuit or current overload.

2. Check wiring and verify that the screws are tight and secure.