Hitachi PLC Getting Started

Getting Started

Hitachi PLC

No. Contents Page

1 Introduction 2
2 Hitachi PLC 4
3 Technical Specifications 10
4 Setting up 11
5 Configuration 13
6 Wiring 16
7 Programming 17

Powerful Hitachi PLC

Programming Compatibility

Programming is fully compatible from the smallest PLC (MICRO-EH) to the biggest one (Big-H
series).

2 communication ports

2 communication ports can be used flexibly as programming, HMI communication and general
purpose port for bar code reader or intelligent sensors or scales.

(Note : MICRO-EH does not support the general purpose port.)

Easy programming

Hitachi provides two different programming software.

1) Pro-H : IEC61131-3 standard, Multiprogramming languages.

2) LADDER EDITOR for Windows : Easy ladder programming editor
(The both in one CD package)

High speed micro processor

EH-150 and MICRO-EH has a 32 bits RISC microprocessor called “Super H”.

Compact size

The compact PLC has more capabilities with high reliability, and saves more space and cost.

Open network

EH-150 series has Profibus DP master/slave modules and DeviceNet master/slave modules,
which will increase application range.

Flexible product line up

Digital I/O (normal / high density), analog I/O (V, I, PT100/1000), high speed counter, positioning,
several communication modules are available.

Solution for total automation system

Hitachi provides many options besides PLC as follows.

- Operator panel EH-HMI series

- Remote I/O system EH-RIO series

- Frequency inverters L/SJ100 and L300P/SJ300 series.

1

1. Introduction

What is a PLC?

“PLC” stands for Programmable Logic Controller. PLC is an industrial controller, which enables the
control of many devices and signals easily and flexibly. The PLC is “Programmable” by PC or hand
held programming unit. The PLC’s basically work in 3 steps : reading input data, calculating in the
CPU and writing outp ut dat a according to user program in the PLC.

Input

- Switches

- Sensors

- Encoders, etc.

PLC

CPU

Program

Calculating

OutputInput

Output

- V a lv es

- Relays

- Alarms, etc.

How it works?

The PLC has a CPU. The CPU executes (scans) a user program. When the CPU reaches the end of
the program, the CPU will return t o t he program top and execute again, this process is continuo us. In
every cycle, input data is read, and output data is writt en once each.

1 cycle

1 cycle

Program Scanning

Read Input data Write Output data

Input and output data is effective once in a scan.
This is called “

* Scan time (cycle time) depends on your program. (Normally 5 to 30ms.)

Refresh Processing

1 cycle

”.

2

Time

System processing

and Communication

Basic flow

Micro processor

Micro processor

Programming on PC

Download from PC to CPU

Programming software
required (see page 1)

Program

PLC

CPU module

The program is stored in
FLASH memory of CPU

Program

FLASH memory keeps the
program after power OFF.

Start the PLC by PC or
RUN switch on the PLC

PLC starts operation according to the user program.

CPU module

FLASH memory

Program memory (SRAM)

Data memory (SRAM)

Retentive Data memory

(SRAM)

RUN

CPU module

FLASH memory

ç ç ç

è è è

Program memory (SRAM)

Data memory (SRAM)

Retentive Data memory

(SRAM)

Input
Output

3

2. Hitachi PLC

LED indication

LED indication

è RUN

System design

Hitachi has a compact type PLC “MICRO-EH” and modular type PLC “EH-150”.

n MICRO-EH

RUN/STOP

switch

Potentiometer

× 2

Communication

Port 1

(RS-232C)

n

EH-150

Power supply module

CPU module

Input terminal

Communication port 2
(RS-422/485)

Expansion
connector

Output terminal

Expansion connector

Battery

I/O modules

RUN LED
Error LED

Reset button

é

RUN/STOP switch
Communication port 1 (RS-232C/422*/485*)

Communication port 2 (RS-232C)

(+ terminal cover)

* : Supported by CPU308/316/448

4

Base unit

Terminal block

Binary, decimal and hexadecimal code

00000001001000110100010101100111100010011010101111001101111011110123456789ABCDE

F

Binary code

Hexadecimal code

000110010111011112EFWord

0

1

or

Before going into the Hitachi PLC details, it is important to understand the numbering system of the
PLC. Electric devices like PLC’s can handle only digital data. The minimum unit of digital data is a
“bit”. 1 bit has two states, 0 or 1.

4 bits can give us 16 different values because of 24 as below left.

4 bits

16 values

Since 4 bits of data is not easy to handle, the data is translated to hexadecimal code 0 to F as above
right. One hexadecimal code (= 4 bits) can express 16 different values.
4 hexadecimal codes have 65,535 values (= 164). This unit (4 hexadecimal codes = 16 bits) is called
as “Word”. Normally Hitachi PLC handles binary data and word data.

This is a comparison table of one “Word” in binary, decimal and hexadecimal expressions.

2 10 16 2 10 16

0000 0000 0000 0000 0 H 0000 0000 0000 0011 1111 63 H 003F
0000 0000 0000 0001 1 H 0001 0000 0000 0100 0000 64 H 0040
0000 0000 0000 0010 2 H 0002
0000 0000 0000 0011 3 H 0003 0000 0000 1111 1111 255 H 00FF
0000 0000 0000 0100 4 H 0004 0000 0001 0000 0000 256 H 0100
0000 0000 0000 0101 5 H 0005
0000 0000 0000 0110 6 H 0006 0000 0011 1111 1111 1023 H 03FF
0000 0000 0000 0111 7 H 0007 0000 0100 0000 0000 1024 H 0400
0000 0000 0000 1000 8 H 0008
0000 0000 0000 1001 9 H 0009 0000 0111 1111 1111 2047 H 07FF
0000 0000 0000 1010 10 H 000A 0000 1000 0000 0000 2048 H 0800
0000 0000 0000 1011 11 H 000B
0000 0000 0000 1100 12 H 000C 0000 1111 1111 1111 4095 H 0FFF
0000 0000 0000 1101 13 H 000D 0001 0000 0000 0000 4096 H 1000
0000 0000 0000 1110 14 H 000E
0000 0000 0000 1111 15 H 000F 0111 1111 1111 1111 32767 H 7FFF

0000 0000 0001 0000 16 H 0010 1000 0000 0000 0000 32768 H 8000
0000 0000 0001 1111 31 H 001F 1111 1111 1111 1111 65535 H FFFF

0000 0000 0010 0000 32 H 0020

5

I/O data types

Hitachi PLC’s handles the following I/O.

External
I/Os

Bit

(for Digital data, etc)

(for Analog data, etc)
Input X ¨¨¨¨ [D] WX ¨¨¨ [H] DX ¨¨¨ [H]
Output Y ¨¨¨¨ [D] WY ¨¨¨ [H] DY ¨¨¨ [H]

Word

Normal memory R ¨¨¨¨ [H] WR ¨¨¨ [H] DR ¨¨¨ [H]
Shared memory M ¨¨¨¨ [H] WM ¨¨¨ [H] DM ¨¨¨ [H]
Link memory L ¨¨¨¨ [H] WL ¨¨¨ [H] DL ¨¨¨ [H]

Internal
I/Os

Timer (TD,SS, etc.) TD ¨¨¨ [D] - ­Counter (CU, etc.) CU ¨¨¨ [D] - ­Edge detection á DIF ¨¨¨ [D] - ­Edge detection â DFN ¨¨¨ [D] - -

Note : [D] ... Decimal (ex. 00,01,...,09,10,...,15,16,17,18,19,20,21,...)
[H] ... Hexadecimal (ex. 00,01,...,09,0A,0B,...0F,10,11,...1F,20,21,...)

n

Bit, Word and Double Word

Double Word consists of 2 Words, and 1 Word consists of 16 bits as below.

Double Word

Word (16 bits)

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

i

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

Double Word (32 bits)

Example : WR 0 = H’1234, WR 1 = H’5678 è DR 0 = H’5678 1234

WR 1 WR 0

n

External I/O

External I/Os (X, Y, WX, WY, etc.) are direct addresses for each digital input/output module or analog
input/output module. Please note bit I/Os X and Y are decimal expression.
(WX/WY can be used as access command or data for high function modules like the counter
module.)

DX 1

WX 0

WX 1

WX 2

B

i
t

0

X

X1X

0

2

X13X14X15X

16

DX 0

X17X

18

X29X30X31X

32

X33X

34

X45X46X

47

DX 2

6

n

Internal I/O

Internal I/O (R, WR, M, WM, etc.) means data memory. This data memory area can be read or
written freely for flags, parameters, set point values or calculation depending on your program.

[ R, WR ]

Note : “R” and “WR/DR” are physically separated memory areas.

R0R1R2R3R4R5R6R7R8R9RARBRCRDRERFR10R11R12R13R14R15R16R17R18R19R1AR1BR1CR1DR1ER1FR20R

21

DR 1

WR 0

WR 1 WR 2

No bit access No bit access No bit access

DR 0

[ M, L ]

Note : “M”, “WM” and “DM” are in one common memory area. (L/WL/DL as well.)

DM 1

WM 0

M

0

M1M

2

MDMEMFM

10

M11M

12

WM 1

M1DM1EM1FM

20

WM 2

M21M

22

DM 0

DR 2

M2DM2EM

2F

DM 2

Note : “L” is available only for the LINK module

* Refer to the chapter “Programming” for further information about TD, CU, DIF and DFN.

7

I/O address of MICRO-EH

The I/O address of MICRO-EH is fixed.

n

10/14/28 points

Input

Output

n

23 points

DI × 6

DO × 4

DI × 13 AI × 2

X0 – X5

Y100 – Y103

X0 – X12

DI × 8

DO × 6

WX30,31

X0 – X7

Y100 – Y105

DI × 16

DO × 12

X0 – X15

Y100 – Y111

DO × 10

n

Expansion units

DI

: Digital Input

DO

: Digital Output

AI

: Analog Input

AO

: Analog Output

Y100 – Y109

X1000 – X1007DI × 8

DO × 6

Y1016 – Y1021

AO × 1

WY40

X2000 – X2007

Y2016 – Y2021

X3000 – X3007

Y3016 – Y3021

X4000 – X4007

Y4016 – Y4021

8

I/O address of EH-150

X ¨ ¨

WX ¨ ¨

EH-XD16

EH-YTP64

EH-YTP32

EH-AX8V

EH-XD16

EH-AX8V

EH-AY4V

EH-XD64

The I/O address of EH-150 depends on the module location and I/O type.

[ Bit ]

16 DI

X0000 – X0015

Power supply

Basic unit

(Unit 0)

¨¨

CPU

Bit number (decimal)
Slot number (0 - 7)
Unit number (0 - 1)
I/O type

0 1 2 3 4

[ Word ]

16 DI

8 AI

¨

X0100 – X0115

WX020 – WX027

64 DO

4 AO

64 DI

Y0300 – Y0363

X1000 – X1063

Word number
Slot number (0 - 7)
Unit number (0 - 1)

I/O type

WY040 – WY043

Expansion unit

0 1 2 3 4

32 DO

Y1200 – Y1231

(Unit 1)

I/O controller module

* 16 DI : 16 points Digital Input module, 4 AO : 4 channels Analog Output module

4 AI

WX140 – WX147

& Hexadecimal expression

As mentioned above, each hexadecimal code can be expressed as 4 bits.

0 : 0000 4 : 0100 8 : 1000 C : 1100
1 : 0001 5 : 0101 9 : 1001 D : 1101
2 : 0010 6 : 0110 A : 1010 E : 1110
3 : 0011 7 : 0111 B : 1011 F : 1111

Since one word (WX, WY, WM, etc.) consists of 16 bits (X, Y, M, etc.), the relation between WX/WY
and X/Y is as follows. (“H” stands for hexadecimal.)

X15 X0X7X8

WX 0 = H1234 = 0001 0010 0011 0100

Y15 Y0Y7Y8

WY 5 = H00FF = 0000 0000 1111 1111

9

3. Technical specifications

EH-150MICRO-EH

10/14/23,28

Speed of
Binary
command

0.9µs 1.0µs 0.1µs

Memory size 3 kstep 4 kstep 8 kstep 8 kstep 16 kstep 48 kstep
I/O points 10/70/84 512 1,024
Exp. unit Up to 4 - 1
Commands 98 152
PID ­Clock

ü *1
Port 1 RS-232C RS-232C/422/485
Port 2
Memory
board
Modem

RS-422/485 *1

(planned) - ü (optional)

ü

R
WR

4,096 word

(WR0 – FFF)

M, WM
L, WL

-

Special R
Special WR
Timer (TD)/
counter (CU)
points

256 points
(TD + CU)

0.01s : 64 pts.

TD /CU
setting value
Edge detect 512 points (DIF0 - 511) / 512 points (DFN0 - 511)

*1 : Only 23, 28 points module.
*2 : (TD) is up to 256 (TD0 - 255), and counter (CU) is up to 511 (CU0 - 511) for EH-150 series. TD number

is not allowed to use same as CU number, and vice versa.

CPU104 CPU208 CPU308 CPU316 CPU448

General specification

ü

-

ü

RS-232C

-

ü

Internal memory

1984 bits (R0 – R7BF)

8,192 w.

(WR0 – 1FFF)

16,384 points = 1,024 w. (M0 – 3FFF = WM0 – 3FF)

16,384 points ×2 = 1,024 w. ×2

(L0 – 3FFF = WM0 – 3FF, L10000 – 13FFF = WL1000 – 13FF

64 points (R7C0 – 7FF

512 words (WRF000 – F1FF)

512 points (TD + CU) *2

(TD : up to 256 points, 0.01s base TD : up to 64 points.)

TD : 65,535 with 0.01, 0.1 or 1 sec. time base

CU : 65,535 times

17,408 w.

(WR0 – 43FF)

22,528 w.

(WR0 – 57FF)

50,176 w.

(WR0 – C3FF)

(see below)
(see below)

Special internal registers R, WR

The special internal registers are some flags, diagnostic information and parameter setting area to operate
the PLC easily and flexibly. The following list is a part of this area and error code in WRF000.

Address Description Set by Reset by Error code in WRF000

R7E3 ON while the first scan CPU
R7E4 Always ON CPU CPU H33 memory size error
R7E5 0.02s clock (0.01s ON, 0.01s OFF) CPU CPU H34 program (syntax) error
R7E6 0.1s clock (0.05s ON, 0.05s OFF) CPU CPU H41 I/O configuration error
R7E7 1s clock (0.5s ON, 0.5s OFF) CPU CPU
R7EC Clear error code user CPU
WRF000 Error code (See right table.) CPU user
WRF00B – 00F Calendar CPU ­WRF010 – 012 Scan time (max. / current / min.) CPU CPU H71 Battery low
WRF01B – 01F Calendar to read/write user user
WRF050 ROM version CPU CPU
WRF051 FLASH ROM version CPU CPU

10

CPU

H13 micro processor error

scan time error

H44

(normal scan)
scan time error

H45

(periodic scan)

4. Setting up

Baud rate for PLC

n

MICRO-EH

Configure baud rate for communication port 1 and 2. For normal use, set the dip switch 1 ON. The
port 1 will then be available for programming with 19.2kbps.

ON

1 2 3 4

Port 1
RS-232C

Dedicated port
(Programming
/ HMI)

Port 2
RS422/485

Dedicated port
(Programming
/ HMI)

baud rate
Standard

Modem
mode

Standard

Multidrop

Dip switchPort No. Communication type /

1 2 3 4

38.4 kbps ON - ON - - -

19.2 kbps ON

9600 bps - - ON - - ­4800 bps - - - - - ­4800 bps - ON - - H0000 ­9600 bps - ON - - H0100 -

19.2 kbps - ON - - H0200 -

38.4 kbps - ON - - H0300 -

57.6 kbps - ON - - H0400 ­2400 bps - ON - - H0500 -

4800 bps - - - - - H8000
9600 bps - - - - - H8100

19.2 kbps

38.4 kbps - - - - - H8300
4800 bps - - - - - HA0xx
9600 bps - - - - - HA1xx

19.2 kbps - - - - - HA2xx

38.4 kbps - - - - - HA3xx

- - - - - H8200

- - - - -

WRF01A WRF03D

11

n

19.2 kbps for both ports

EH-150

Configure baud rate for communication port 1 and 2. For normal use, set the dip switch 1, 3, 5 all
ON, and the toggle switch ON. Both ports will then be available for programming with 19.2kbps.

CPU module

Toggle switch

Dip switch

Dip switch 1, 3, 5 : ON
Toggle switch : ON

Dip switch and toggle switch configuration

Remote SW 1 : ONRUN/STOP

Mode
Port 1

Port 2 Dedicated port

SW1-6 = Dip switch, SW T = Toggle switch

RUN switch SW 1 : OFF
Dedicated port

(Programming / HMI)

General purpose port SW 5 : OFF

(Programming / HMI)

SW 5 : ON

ON

OFF

8
7
6

5

ONOFF

4
3

2
1

4,800 bps SW 3, 4 : ON, ON
9,600 bps SW 3, 4 : OFF, ON
19,200 bps SW 3, 4 : ON, OFF
38,400 bps SW 3, 4 : OFF, OFF
Modem mode SW 2 : ON
Normal mode SW 2 : OFF
4,800 bps SW 6, T : OFF, OFF
9,600 bps SW 6, T : ON, OFF
19,200 bps SW 6, T : OFF, ON
38,400 bps SW 6, T : ON, ON

Baud rate for PC (Programming software)

The baud rate setting procedure depends on the programming software.

Pro-H Right mouse click on “Resource” - [Setting] – [Communication]
Ladder Editor for Win. [Utility] – [Environment] – [Communication]

12

5. Configuration

The user program is up/downloaded from/to the PLC as described above.
Besides the user program, several other pieces of important information are up/downloaded from/to
the PLC together with user program. Ensure the following settings are configured correctly.
The “I/O configuration” and “Memory size” in the PC program must be same as the actual I/O
configuration and memory size in the PLC.

PC

User program

Ø I/O configuration
Ø Memory size
Ø Operation parameters
Ø Retentive area, etc.

PLC

I/O configurationMemory size

I/O configuration

n MICRO-EH
The I/O configuration of MICRO-EH is fixed for each model. This table can be read out from the PLC
when on-line.

10, 14, 28 points basic module

Unit 0 Unit 1
Slot 0 X48
Slot 1 Y32
Slot 2
Slot 3
Slot 4

23 points basic module

Unit 0 Unit 1
Slot 0 X48

Slot 1 Y32
Slot 2
Slot 3
Slot 4

Empty 16

WX 4

WY 4

10 points

23 points

14 points

I/O configuration of 10,14 and 28
points module is fixed (X48, Y32).

28 points

Expansion module

Unit 0
Slot 0 X48
Slot 1 Y32
Slot 2
Slot 3
Slot 4

Unit 1
B1/1

28 points

13

14 points exp.

n

EH-150

Since the module configuration of EH-150 depends on the user, the I/O configuration table (module
configuration table) must be declared in the PC. This table can be read out from PLC when on-line.

EH-XD64

[ I/O configuration table in PC ]

Unit 0 Unit 1
Slot 0 X64
Slot 1 WX 8
Slot 2 Y16
Slot 3 Y16
Slot 4 WY4
Slot 5
Slot 6
Slot 7

Note : The assignment of a 12 point relay module is “Y16”.
Note : Each module has its own I/O assignment. Please refer to the application manual for further

information.

Note : If the downloaded I/O configuration table does not accord with the actual I/O configuration, the

PLC will not start. However the programming software has a special option setting, which
allows the PLC to work with the wrong I/O configuration.

EH-AX8V
EH-YR12
EH-YTP16
EH-AY4V

Memory size

Configure memory size in programming software accordingly. The memory size can be read out from
PLC when on-line as well as the I/O configuration.

MICRO-EH all models 3 k step (4 k step*)

EH-CPU104 4 k step
EH-CPU208 8 k step

EH-150

*Note : Actual memory size of MICRO-EH is 3 k step however, the configuration on PC should be 4 k step.

On programming software

This setting is configured in the following way depending on programming software.

I/O configuration

Pro-H Double click on “Resource configuration”- [I/O Configuration]
Ladder Editor for Win. [Utility] - [CPU setting] - [I/O assignment]

Memory size

Pro-H Double click on “Resource configuration” - [Memory Allocation]
Ladder Editor for Win. [Utility] - [CPU setting] - [CPU information]

EH-CPU308 8 k step
EH-CPU316 16 k step
EH-CPU448 48 k step

14

Operation parameters

Retentive area

Several optional parameters are available. Configure if necessary.

Operation parameters Default Enable

RUN input Disable Set the address
Max. scan time 100 ms Set the time
Operation mode in wrong I/O configuration STOP RUN
Operation mode in expansion unit error STOP RUN
Operation mode in remote unit error STOP RUN
LINK area range Disable Set the range
etc.

If the “Operation mode in wrong I/O configuration” is enabled, CPU can work without actual I/O
modules, which is useful for debugging or testing.

On programming software

Pro-H Double click on “Resource configuration”- [Operation parameters]
Ladder Editor for Win. [Utility] - [CPU setting] - [Operation parameters]

Retentive area

Internal memory R, WR, WM, TD can be configured as “Retentive area”, which will be kept by a
battery after power off. The battery keeps data not only in the retentive area, but also the real time
clock. User program is kept in FLASH memory, which does not require battery back up.

PLC

Battery

Data in

Real time clock

On programming software

Pro-H Double click on “Resource configuration”- [Memory allocation]
Ladder Editor for Win. [Utility] - [CPU setting] - [CPU information]

FLASH memory

Normal data

User program

Lost after power off

15

6. Wiring

-+-

+

-++

-

0

1

892310114

5121367

1415C

S

+

-

-

+

-

Wiring diagram for some modules are shown below. Implement wiring based on these drawings for
other MICRO-EH also. Each I/O module for EH-150 has a wiring label at the terminal block.

Note : All DC inputs can be connected as either positive or negative logic.

MICRO-EH [EH-D10DTP] EH-150 [EH-YTP16]

RUN

NC 0 1 2 3 C0 4 5

RUN input

24V

0V

GND

0 1 2 3 C0 V0

MICRO-EH [EH-A23DRP]

24V 1

3 4

DC input

Transistor output

6 C1

8 10

Connect jumper
in current mode

12 IN1+

IN2-

CH 0 / CH 1
V / V : WRF06E = H0000
V / I : WRF06E = H4000
I / V : WRF06E = H8000
I / I : WRF06E = HC000

IN2JP

00V

C02

75

9C2

IN1-11

IN1JP

IN2+

DC input Analog input

Transistor

AC 0

GNDAC

output

V0 2

1C0

4 5

C13

Relay output Analog output

6 7

C3C2

8 C5

9C4

IO VO

VCIC

16

7. Programming

A Contact / Coil

B Contact / Coil

Contact

Coil

S

R

One of the most popular and basic programming language is “ladder” (LD), however SFC or FBD is
becoming very popular. In this chapter, LD is introduced for easy understanding.

The simplest LD circuit consists of one contact and one coil as below.

(=Input) (=Output)

Switch Light

In this picture, while the switch is ON, the light is ON.
This LD circuit is almost the same meaning as the above picture. The “contact” is condition for the coil
to be ON, and the “coil” is the result.
Basically input “X” is used for the contact, and output “Y” is used for the coil. The internal I/Os “R”, “M”
can be used for both cases depending on your program. (Y can work as a contact.)

Hitachi PLC handles the following I/O types.

A contact
(Normally open)
B contact
(Normally close)
Edge detection
(Low è High)
Edge detection
(High è Low)

NOT

TD

CU

X0

Normal coil
Set / Reset coil

(MCS / MCR coil available)
Timer (Other timers ; SS, MS, TMR,
WDT available)
Counter (Other counters ; RCU, CTU,
CTD, CL available)

X0 Y100

X0 Y100

Y100

X0

Y100

17

Edge detection (á) : DIF

Edge detection (â) : DFN

Set/Reset coil

X0 Y100

AND

OR

Internal memory R, M can be used instead of X and Y.

NOT

X1

X0 Y100

X1

X0
X1

Y100

X0
X1

Y100

X0

X0 Y100

X0 Y100DIF 0

X0 Y100DFN 0

S

Y100

X0

Y100

1 scan time

X0

Y100

1 scan time

X0

X0 Y100

R

X1 Y100

& De Morgan’s Laws

NOT ( A AND B ) = ( NOT A ) OR ( NOT B ) A × B = A + B
NOT ( A OR B ) = ( NOT A ) AND ( NOT B ) A + B = A × B

X1

Y100

18

ON delay timer : TD

12

n

n

LADDER EDITOR

n

12

Single Shot timer : SS

n

12

n

n

12

X0 TD 0

TD 0 Y100

Pro-H (LD)

TD 0

X0

Pro-H (FBD)

X0

12

0.1s

TD 0

0.1s

Y100

Y100

12

0.1s

X0

TD 0

Y100

1.2s

TC 0

* TC is a word data counting 0 up to 65,535.

LADDER EDITOR

X0 SS 0

TD 0 Y100

Pro-H (LD)

SS 0

X0

Pro-H (FBD)

X0

12

0.1s

SS 0

0.1s

Y100

Y100

12

0.1s

X0

TD 0

Y100

TC 0

* TC is a word data counting 0 up to 65,535.

1.2s

Note : MICRO-EH supports above 2 timers only.
Note : EH-150 supports Mono-stable timer “MS”, integral timer “TMR” and Watch dog timer “WDT”

besides above ones.

19

Inline box

Comparison box

n

LADDER EDITOR

n

WX 3

n

H3000

<

WX 3

Y100

H3000

Pro-H (LD)

WX 3

16#3000

Pro-H (FBD)

16#3000

R5

DIF2

GT 0

0.1s

GT 0

0.1s

WR0 = WR1 OR H00FF
WR2 = WR2 + 10
SHL (WM100,1)
TRNS 0 (WX0, WR0, R0)
FUN 80 (WR3)

Y100

Y100

* GT : Greater Than

Up to 19 lines

WX 3

Y100

While WX 3 exceeds H3000, Y100 is ON.

Many commands are available

Basic commands : 35 ∼
Arithmetical commands : 22 ∼
Application commands : 25 ∼
Control commands : 12 ∼
Special function commands : 16 ∼

20