SMC Networks HRS012-A, HRS050-A, HRS012-W, HRS018-W, HRS018-A Operation Manual

...

Download

Page 1

HRX-OM-M091-H

edition: Jul. 2009

edition: Nov.2011

Operation Manual

Communication function

Thermo chiller

Air-Cooled

refrigerated type

Water-Cooled

refrigerated type

HRS012-A∗-10-∗ HRS012-W∗-10-∗ HRS018-A∗-10-∗ HRS018-W∗-10-∗ HRS012-A∗-20-∗ HRS012-W∗-20-∗ HRS018-A∗-20-∗ HRS018-W∗-20-∗ HRS024-A∗-20-∗ HRS024-W∗-20-∗ HRS050-A∗-20-∗ HRS050-W∗-20-∗

Keep this manual available whenever necessary

Page 2

To the users

Thank you for purchasing SMC’s Thermo chiller (hereinafter referred to as the “product”).

For safety and long life of the product, be sure to read this operation manual (hereinafter referred to as the

“manual”) and clearly understand the contents.

● Be sure to read and follow all instructions noted with “Warning” or “Caution” in this manual.

● This manual is intended to explain the installation and operation of the product. Only people who

understand the basic operation of the product through this manual or who performs installation and

operation of or have basic knowledge about industrial machines are allowed to work on the product.

● This manual and other documents attached to the product do not constitute a contract, and will not affect

any existing agreements or commitments.

● It is strictly prohibited to copy this manual entirely or partially for the use by the third party without prior

permission from SMC.

Note: This manual is subject to possible change without prior notice.

Page 3

HRX-OM-M091

Contents

HRS Series

Contents

Chapter 1 Read before using.............................................................1-1

1.1 Communication mode and operation method ........................................................1-2

1.2 Communication port..................................................................................................1-3

1.3 Key operations...........................................................................................................1-4

1.4 Parameters .................................................................................................................1-6

Chapter 2 Contact input/output communication .............................2-1

2.1 Precautions for communication...............................................................................2-1

2.1.1 Precautions wiring communication...................................................................................... 2-1

2.1.2 Precautions after wiring and before communication ........................................................... 2-1

2.2 Communication specification...................................................................................2-2

2.3 Terminal block explanation.......................................................................................2-2

2.4 Setting and checking.................................................................................................2-4

2.4.1 Setting and checking........................................................................................................... 2-4

2.4.2 Setting and checking........................................................................................................... 2-5

2.5 Contact input signal.................................................................................................2-16

2.5.1 Run/stop signal･Remote signal......................................................................................... 2-16

2.5.2 Signal of the external switch ............................................................................................. 2-18

2.6 Contact output signal..............................................................................................2-19

Chapter 3 Serial communication.......................................................3-1

3.1 Precautions wiring communication .........................................................................3-1

3.2 Communication specification...................................................................................3-1

3.3 Connected explanation .............................................................................................3-2

Chapter 4 MODBUS communication function..................................4-1

4.1 Precautions for communication...............................................................................4-1

4.1.1 Precautions after wiring and before communication ........................................................... 4-1

4.1.2 Precautions for communicating........................................................................................... 4-2

4.2 Communication specification...................................................................................4-2

4.3 Setting and checking.................................................................................................4-3

4.3.1 Setting and checking items ................................................................................................. 4-3

4.3.2 Setting and checking........................................................................................................... 4-4

4.4 Communication sequence ........................................................................................4-7

4.5 Message configuration..............................................................................................4-8

4.5.1 Message format................................................................................................................... 4-8

4.5.2 Message example ............................................................................................................... 4-9

4.6 Function codes ........................................................................................................4-10

4.7 LRC............................................................................................................................4-10

4.8 Explanation of function codes................................................................................4-11

4.8.1 Function code：03 Reading multiple registers ..................................................................4-11

4.8.2 Function code：06 Writing registers ................................................................................. 4-12

Page 4

HRX-OM-M091 Contents

HRS Series

4.8.3 Function code：16 Writing multiple registers .................................................................... 4-13

4.8.4 Function code：23 Reading/writing multiple registers ......................................................4-14

4.9 Negative response...................................................................................................4-16

4.10 Register Map ............................................................................................................4-17

4.10.1 Circulating fluid discharge temperature.............................................................................4-17

4.10.2 Circulating fluid discharge pressure ..................................................................................4-17

4.10.3 Electric resistivity of the circulating fluid ............................................................................4-17

4.10.4 Status flag..........................................................................................................................4-18

4.10.5 Alarm flag........................................................................................................................... 4-19

4.10.6 Circulating fluid set temperature........................................................................................4-21

4.10.7 Operation Start Command................................................................................................. 4-21

Chapter 5 Simple communication protocol function ......................5-1

5.1 Precautions for communication...............................................................................5-1

5.1.1 Precautions after wiring and before communication ...........................................................5-1

5.1.2 Precautions for communicating ...........................................................................................5-2

5.1.3 Precautions after the completion of the communication...................................................... 5-2

5.2 Communication specification...................................................................................5-3

5.3 Setting and checking.................................................................................................5-4

5.3.1 Setting and checking items.................................................................................................. 5-4

5.3.2 Setting and checking ...........................................................................................................5-5

5.4 Communication sequence...................................................................................... 5-11

5.5 Message configuration............................................................................................5-12

5.5.1 Message format .................................................................................................................5-12

5.5.2 Message example.............................................................................................................. 5-14

5.6 BCC...........................................................................................................................5-15

5.7 Command .................................................................................................................5-15

5.8 Command explanation ............................................................................................5-16

5.8.1 Command:PV1 Circulating fluid discharge temperature ...................................................5-16

5.8.2 Command:SV1 Circulating fluid set temperature (R) ........................................................ 5-17

5.8.3 Command:SV1 Circulating fluid set temperature (W) .......................................................5-18

5.8.4 Command:LOC Key-lock setting (R) ................................................................................. 5-19

5.8.5 Command:LOC Key-lock setting (W) ................................................................................5-20

5.8.6 Command:STR Saves data (W) ........................................................................................ 5-21

5.9 Negative response...................................................................................................5-22

Chapter 6 Communication alarm function ....................................... 6-1

6.1 Communication alarm occurs ..................................................................................6-1

6.2 Communication alarm reset......................................................................................6-2

6.3 Setting and checking.................................................................................................6-2

6.3.1 Setting and checking items.................................................................................................. 6-2

6.3.2 Setting and checking ...........................................................................................................6-3

Page 5

HRX-OM-M091

Chapter 1 Read before using

HRS Series 1.1 Communication mode and operation method

1-1

Chapter 1 Read before using

The communication of this device consists of contact input/output communication and serial communication.

MODBUS communication and simple communication protocol can be selected as the serial communication protocol. Depending on the customer’s specification, communication can be changed to contact input/output communication or serial communication.

Table 1-1 Communication method

Contact input/output communication

This product is equipped with a terminal which runs/stops the product by remote control and a terminal which can pick up alarm signals. The terminals can be changed depending on the customer’s application.

MODBUS standard protocol

Serial communication (RS-485/RS232C) enables remote control of run/start of the product, temperature setting, and details of product condition and alarm condition can be obtained.

Serial communication

Simple communication protocol

Serial communication (RS-485/RS232C) enables remote control of temperature setting. This protocol complies with SMC thermo-cooler HRG, HRGC series. (We recommend using the MODBUS protocol if you are unfamiliar with using the communication function.) There are two ways to start and stop by simple communication protocol. The customer can choose between operation using the Operation display panel (simple communication protocol 1) and remote control using the contact input (simple communication protocol 2).

●If using contact input/output communication, refer to chapter 2.

●If using serial communication MODBUS, refer to chapter 3 for

serial communication specifications first, then refer to chapter 4 for protocol specifications.

●If using simple communication protocol for serial communication, refer to chapter 3 for serial communication specifications first, then refer to chapter 5 for protocol specifications.

Page 6

HRX-OM-M091

Chapter 1 Read before using

1.1 Communication mode and operation method HRS Series

1-2

1.1 Communication mode and operation method

LOCAL, DIO and SERIAL are available as the communication modes. Table

1.1-1 explains the communication modes. The default setting is LOCAL.

The operation method depends on the communication mode. Table 1.1-2 shows how the communication mode and method of operation are related.

The operation of the product functions depends on the communication mode. Table 1.1-3 shows how the communication mode and functions of this product are related.

Table 1.1-1 Communication modes

Communication mode Explanation

LOCAL Mode allowing the product to be operated by the operation panel.

Mode allowing the product to be operated by the contact input/output communication. When the communication mode is “DIO”, operation mode automatically becomes “DIO REMOTE”. "DIO REMOTE” and “DIO LOCAL” can be selected by DIO communication signal.

DIO REMOTE：

Contact input/output communication takes control of the operation of the product. The [REMOTE] lamp on the operation panel turns on.

DIO

DIO LOCAL：

Operation control of the product is the same as that of LOCAL. The [REMOTE] lamp on the operation panel turns off.

SERIAL

Mode allowing the product to be operated by serial communication. MODBUS/ simple communication protocol can be selected.

Table 1.1-2 Communication mode and operation

DIO SERIAL

Simple

communication

protocol pattern

LOCAL

DIO

LOCAL

DIO

REMOTE

MODBUS

1 2

Run/Stop control with operation display panel

○ ○ × × ○ ×

Circulating fluid discharge temperature setting control with operation display panel

○ ○ ○ × ×

Except above with operation display panel ○ ○ ○ ○ ○ Condition reading with operation display panel

○ ○ ○ ○ ○

Run/Stop operation by contact input/output communication

× × ○ × × ○

Condition reading by contact input/output communication

○ ○ ○ ○ ○

Reading of the external switch ○ ○

∗

○

∗

○

○ ○

∗

Run/Stop operation by serial communication.

× × × ○ ×

Circulating fluid discharge temperature setting control by serial communication.

× × × ○ ○

Condition reading by serial communication. ○ ○ ○ ○ ○

∗1: Only one external switch can be installed.

Table 1.1-3 Communication mode and product functions

DIO SERIAL

Simple

communication

protocol pattern

LOCAL

DIO

LOCAL

DIO

REMOTE

MODBUS

1 2

Run timer ○ ○ × × ○

Stop timer ○ ○ × × ○ × Recovery from power failure ○ ○ × × ○ × Anti-freezing ○ ○ ○ ○ ○ ○ Pump accumulated operating time reset ○ ○ × × ○ ×

Page 7

HRX-OM-M091

Chapter 1 Read before using

HRS Series 1.2 Communication port

1-3

1.2 Communication port

The communication port at the back of the product is used for communication. Fig 1.2-1, Fig 1.2-2 shows the location of the communication port.

Fig 1.2-1 Communication port (HRS012-∗∗-∗-∗, HRS018-∗∗-∗-∗, HRS024-∗∗-20-∗)

Fig 1.2-2 Communication port (HRS050-∗∗-20-∗)

Contact input/output(DIO) Connector for communication Used for DIO communication. Mating connector is prepared as an accessory.

Connector for

option Not used for communication.

Serial communication Connector Used for RS-485/RS-232C.

Page 8

HRX-OM-M091

Chapter 1 Read before using

1.3 Key operations HRS Series

1-4

1.3 Key operations

Fig 1.3-1 ‘’Key operation (1/2)’’ and

Fig 1.3-2 ‘’Key operation (2/2)’’ show the operation of keys of the thermo-chiller. This manual explains the “Communication setting menu”.

Circulating fluid outlet temperature Circulating fluid set temperature

Circulating fluid outlet pressure

Main display

Circulating fluid outlet temperature

Circulating fluid return port

Check monitor

Temperature of the compressor inlet.

Circulating fluid outlet pressure

Pressure of higher pressure refrigerant circuit

Pressure of lower pressure refrigerant circuit

Accumulated operation time of the pump

Accumulated operation time of the fun motor

Accumulated operation time of the compressor

Accumulated operation time

Key-lock

Run timer

Setting menu

Stop timer

READY mode

READY band width

READY time

Offset mode

Offset temperature

Recover from power failure

Anti-freezing

Data reset

Pump accumulated operating time reset

Fun motor accumulated operating time reset

Compressor accumulated operating time reset

Key click sound

Temperature unit

Pressure unit

Alarm （The latest）

Alarm

Alarm display menu

Alarm

（The oldest）

Note) It changes only when the alarm is generated.

Power supply ON

Press the 2 sec.

Electric resistivity

SEL

Option 【drain pan set】

Electric resistivity

Option 【electric resistivity sensor set】

SEL

Unused

SEL

Press the 2 sec.

MENUMENU

Fig 1.3-1 Key operation (1/2)

Page 9

HRX-OM-M091

Chapter 1 Read before using

HRS Series 1.3 Key operations

1-5

Changing of contact input 1 signal detection

Alarm buzzer sound

Changing of low tank level

Changing of circulating fluid discharge temperature rise

Detection temperature for circulating fluid discharge temperature rise

Changing of circulating fluid discharge temperature drop

Detection temperature for circulating fluid discharge temperature drop

Changing of circulating fluid discharge pressure rise

Detection pressure for circulating fluid discharge pressure rise

Changing of communicati on error

The monitoring time of communication error

Changing of circulating fluid discharge pressure drop

Detection pressure for circulating fluid discharge pressure drop

Changing of contact input 2 signal detection

Changing of DI level rise

Upper limit of DI level rise

Changing of DC line fuse cut

Changing of water leakage

Lower limit of DI level drop

Changing of DI level drop

SEL

Press the 2 sec.

Alarm setting

Communicati on mode

Serial protocol

Communication specifications

RS-485 terminal

Slave address （MODBUS）

Communicati on　speed （MODBUS）

Slave address （Simple communicatio n protocol）

Communication speed （Simple communication protocol）

Response delay time （Simple communication protocol）

Communicati on　range （Simple communicati on protocol）

BCC （Simple communicatio n protocol）

Data length （Simple communicati on protocol）

Parity check （Simple communicati on protocol）

Stop bit length （Simple communicatio n protocol）

Digital input signal 1

Digital input signal 1 type

Digital input signal 2

Digital input signal 2 type

Digital output 1 function

Digital output 1 operation

Digital output 1 selected alarm

Digital output 2 function

Digital output 3 selected alarm

Digital output 2 operation

Digital output 2 selected alarm

Digital output 3 function

Digital output 3 operation

Press the 2 sec.

Contact input signal 1 Delay timer (time delay) of reading

Contact input signal 2 OFF Detection timer

Contact input signal 2 Delay timer (time delay) of reading

Contact input signal 2 OFF Detection timer

Communication

setting menu

SEL

This manual explains the ''Co mmunication setting menu''.

SEL

Temperature alarm Monitoring method

Monitoring start timer

Range over Detection timer

Fig 1.3-2 Key operation (2/2)

Page 10

HRX-OM-M091

Chapter 1 Read before using

1.4 Parameters HRS Series

1-6

1.4 Parameters

Table 1.4-1 ‘’Parameters’’ explains the parameters of the 「communication setting menu」.

Table 1.4-1 Parameters

Display Item

Initial value

(Default setting)

Reference

page

Category

Communication mode LOC

2.4

4.3

5.3

Serial protocol MDBS

4.3

5.3 Communication specifications

485

4.3

5.3

RS-485 terminal OFF

4.3

5.3

Slave address 1

Mo db us

Communication speed 19.2

4.3

Slave address 1 Communication speed 9.6 BCC ON Data length 8BIT Parity check NON Stop bit length 2BIT Response delay time 0

Serial communication

Simple

communication

rotocol

Communication range RW

5.3

Contact input signal 1 RUN Contact input signal 1 type ALT Contact input signal 1 delay timer (time delay) of reading

Contact input signal 1 OFF detection timer

Contact input signal 2 OFF Contact input signal 2 type ALT Contact input signal 2 delay timer (time delay) of reading

Contact input signal 2 OFF detection timer

Contact output 1 function

RUN

Contact output 1 operation

Selected for contact output 1

AL.01

Contact output 2 function

RMT

Contact output 2 operation

Selected for contact output 2.

AL.01 Contact output 3 function ALM Contact output 3 operation B

Contact input/output communication

Selected for contact output 3 AL.01

2.4

Communication

setting menu

Page 11

HRX-OM-M091

Chapter 2 Contact input/output communication

HRS Series 2.1 Precautions for communication

2-1

Chapter 2 Contact input/output

communication

The device is equipped with a terminal which runs/stops the product. It is also equipped with a terminal which picks up operation signals, alarm signals and setting condition.

The device starts contact input/output communication according to the setting of the operation display panel. Contact input/output communication can be customized by changing the settings. Table 2-1 ‘’Customizable content’’ shows the contents which can be changed by the operation display panel.

Table 2-1 Customizable content

Signal Can be changed

Contact input/output signal（2pcs.） Signal configuration（Alternate/Momentary）

Contact input/output signal（3pcs.）

Type of signal, signal operation（N.O type / N.C type）

2.1 Precautions for communication

2.1.1 Precautions wiring communication

○Communication wiring

A communication cable that connects the product and customer system is not included with the product. Please prepare a cable, referring to 2.3 ‘’Terminal block explanation (The connector is included.) In order to avoid malfunction, do not connect to any place other than those shown in 2.3 ‘’Terminal block explanation.

○Power supply

To use the power of the product, the total load current must be 500mA or less.

If the load is 500mA or more, the internal fuse is cut to protect the product and the alarm [AL21 DC line fuse cut] is generated. Refer to the “Installation / Operation” of the operation manual for alarms.

Optional parts needs to be adjusted so that the total load is 500mA or less referring the table below.

Table 2-1-1 Current consumption of optional parts

No. Name

Part NO

Current

consumption

1 Drain pan set(with water leakage sensor) HRS-WL001 25mA 2 Drain pan set(with water leakage sensor) HRS-WL002 25mA 3 Electric resistivity sensor set HRS-DI001 100mA

2.1.2 Precautions after wiring and before communication

○Check or set the communication mode by the operation display panel.

・

Communication mode shall be DIO.

Other modes can perform reading, but only DIO mode can perform writing.

Page 12

HRX-OM-M091

Chapter 2 Contact input/output communication

2.2 Communication specification HRS Series

2-2

2.2 Communication specification

Table 2.2-1 DIO Communication specification

Item Specification

Connector type (for this product) MC 1,5/12-GF-3,5

Insulation system Photo coupler Rated input voltage DC24V Used input voltage DC 21.6V to 26.4V Rated input current 5mA TYP

Contact input signal

Input signal 4.7kΩ Rated load voltage AC48V or less/DC30V or less Contact output

signal

Maximum load current

AC/DC 500mA (Resistance load)

Output voltage

DC24V±10％ 0.5A MAX

2.3 Terminal block explanation

This part explains the terminal block of the contact input/output communication. A communication cable that connects the product and customer system is not included with the product. Prepare a cable, referring to Table 2.3-1 and Fig 2.3-1. Use the connector included as an accessory.

Table 2.3-1 Terminal explanation

Terminal

Application Division Default setting

Setting

available

1 Common of contact output signal 3 2 Contact output signal 3

Output

Alarm signal（N.C type） ○

3 Common of contact output signal 2 4 Contact output signal 2

Output

Remote signal（N.O type） ○

5 Common of contact output signal 1 6 Contact output signal 1

Output

Run status signal（N.O type） ○

7 Common of contact input signal 2 8 Contact input signal 2

Input None

○

9 Common of contact input signal 1

10 Contact input signal 1

Input

Run/stop signal（Alternate） ○

11 24V COM output Output

12 DC 24V output Output

Page 13

HRX-OM-M091

Chapter 2 Contact input/output communication

HRS Series 2.3 Terminal block explanation

2-3

4.7kΩ

This product

Your system

Internal circuit

DC24V

Contact output signal 3

Contact input signal 1

Contact output signal 1

Contact output signal 2

24VCOM

Contact input signal 2

DC24V output

24VCOM output

1kΩ

4.7kΩ

1kΩ

Alarm signal

Run/stop signal

Run status signal

Remote signal

－

Signal description

Default setting

Fig 2.3-1 Example of connector connection

Fig 2.3-2 Attached connector and terminal no (Example)

Fig 2.3-3 Wiring of the external switch (NPN open collector output) (Example)

Fig 2.3-4 Wiring of the external switch (PNP open collector output) (Example)

Terminal no.1

Terminal no.12

Wire the communication cable to the connector included as an accessory.

Connect the remote control cable and the switch to the connector for the contact input/output, supplied as an accessory. Then, mount the ferrite core (3 turn) supplied as an accessory. (This is an example of wiring.)

Terminal no.1

Terminal no.12

Wire the communication cable to the connector included as an accessory.

Brown (DC 24V)

Blue (DC COM)

Black (Output 1)

Flow switch

Terminal no.1

Terminal no.12

Wire the communication cable to the connector included as an accessory.

Brown (DC 24V)

Blue (DC COM)

Black (Output 1)

Flow switch

Page 14

HRX-OM-M091

Chapter 2 Contact input/output communication

2.4 Setting and checking HRS Series

2-4

2.4 Setting and checking

2.4.1 Setting and checking

The table below explains the setting items of the contact input/output signal and the initial values.

Table 2.4-1 List of set communication items

Display Item Contents

Initial value

(Default setting)

Communication mode

Sets communication mode of this product.

LOC

Contact input signal 1

Setting contact input signal 1 of the contact input/output communication.

RUN

Contact input signal 1 type

Setting input type of contact input signal 1 of the contact input/output communication. [----] is displayed when the setting of contact input signal 1 is OFF.

ALT

Contact input signal 1 delay timer of reading

Sets the delay timer of reading of contact input signal 1 of the contact input/output communication. Used when the setting of the contact input signal 1 is SW_A or SW_B. [----] is displayed when the setting of the contact input signal 1 is not SW_A or SW_B.

Contact input signal 1 OFF Detection timer

Sets the OFF detection timer of contact input signal 1 of the contact input/output communication. Used when the setting of the contact input signal 1 is SW_A or SW_B. [----] is displayed when the setting of the contact input signal 1 is not SW_A or SW_B.

Contact input signal 2

Setting contact input signal 2 of the contact input/output communication.

OFF

Contact input signal 2 type

Setting input type of contact input signal 2 of the contact input/output communication. [----] is displayed when the setting of contact input signal 2 is OFF.

ALT

Contact input signal 2 delay timer of reading

Sets the delay timer of reading of contact input signal 2 of the contact input/output communication. Used when the setting of the contact input signal 2 is SW_A or SW_B [----] is displayed when the setting of the contact input signal 2 is not SW_A or SW_B.

Contact input signal 2 OFF Detection timer

Sets the OFF detection timer of contact input signal 2 of the contact input/output communication. Used when the setting of the contact input signal 2 is SW_A or SW_B. [----] is displayed when the setting of the contact input signal 2 is not SW_A or SW_B.

Contact output 1 function

Setting output signal function of contact output 1 of the contact input/output communication.

RUN

Contact output 1 operation

Setting output signal operation of contact output 1 of the contact input/output communication.

Contact output 1 selected alarm

Setting selected alarm of contact output 1 of the contact input/output communication. [----] is displayed when the setting of the output signal of contact output1 is not selected alarm signal.

AL.01

Contact output 2 function

Setting output signal function of contact output 2 of the contact input/output communication.

RMT

Contact output 2 operation

Setting output signal operation of contact output 2 of the contact input/output communication.

Contact output 2 selected alarm

Setting selected alarm of contact output 2 of the contact input/output communication. [----] is displayed when the setting of the output signal of contact output2 is not selected alarm signal.

AL.01

Contact output 3 function

Setting output signal function of contact output 3 of the contact input/output communication.

ALM

Contact output 3 operation

Setting output signal operation of contact output 3 of the contact input/output communication.

Contact output 3 selected alarm

Setting selected alarm of contact output 3 of the contact input/output communication. [----] is displayed when the setting of the output signal of contact output3 is not selected alarm signal.

AL.01

Page 15

HRX-OM-M091

Chapter 2 Contact input/output communication

HRS Series 2.4 Setting and checking

2-5

If the communication mode is set to [DIO] first while the operating signal is input, the product will start and feed the circulating fluid before the details are set. For safety, set the communication mode to [DIO] after carrying out the setting

below.

2.4.2 Setting and checking

Communication mode Setting and checking

1. Press and hold the [MENU] key for 2 sec.

Repeat pressing the key until the setting screen for communication mode [

] appears

on the digital display.

2. Select【LOC】from the [▲] key , and confirm by pressing “SEL”.

Table 2.4-2 List of set values

Set values Explanation

Initial value

(Default setting)

Sets LOCAL mode.

○

Sets DIO mode.

∗

Sets SERIAL mode.

∗

∗1：When the setting of the contact input 1 is “External switch signal”, “DIO mode”

cannot be set.

∗2：If the serial protocol is “Simple communication protocol 2” and the contact input 1 is

“external switch signal” or contact input 2 is “remote signal”, “SERIAL mode” cannot be set.

［MENU］

Press and

hold

［MENU］

Press and

hold

［MENU］

Press and

hold

［MENU］

Press and

hold

Page 16

HRX-OM-M091

Chapter 2 Contact input/output communication

2.4 Setting and checking HRS Series

2-6

Contact input signal1 Setting and checking

3. Display the screen of contact input signal 1 by pressing the [SEL] key several times.

The set screen of contact input signal 1 is displayed on the digital display.

4. Select contact input signal 1 from the table below with [▲] key or [▼] key, and confirm by

pressing “SEL”.

Table 2.4-3 List of set values

Set values Explanation

Initial value

(Default setting)

Without input signal Input of run/Stop signal

○

External switch signal input(N.O. type)

∗3,∗

External switch signal input (N.C. type)

∗3,∗

∗3：When the setting of the communication mode is “DIO mode”, “External switch signal”

cannot be set.

∗4：When the setting of the communication mode is “SEIRAL mode” and the protocol

setting is “Simplified communication protocol 2”, “External switch signal” cannot be set.

Contact input signal 1 type Setting and checking

5. Press the [SEL] key once.

The set screen of contact input signal 1 type is displayed on the digital display.

6. Select contact input signal 1 type from the table below with [▲] key or [▼] key, and confirm

by pressing “SEL”.

Table 2.4-4 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available if the setting of contact input signal 1 is OFF.

Alternate signal

○

Momentary signal Momentary signal

∗

∗5：Used when the setting of the contact input 1 is “Operation stop signal input”.

Page 17

HRX-OM-M091

Chapter 2 Contact input/output communication

HRS Series 2.4 Setting and checking

2-7

Contact input signal 1 delay timer of reading Setting and checking

7. Press the [SEL] key once.

The set screen of the contact input signal 1 delay timer of reading is displayed on the digital display.

8. Select contact input signal 1 delay timer of reading from the table below with [▲] key or [▼]

key, and confirm by pressing “SEL”.

Table 2.4-5 List of set value

Set value Explanation

Initial value

(Default setting)

Setting and checking are not available unless contact input signal 1 is external switch signal input (N.O. type or N.C. type).

Setting of contact input signal 1 delay timer of reading. Set range is 0 to 300 sec.

Contact input signal 1 OFF detection timer Setting and checking

9. Press the [SEL] key once.

The set screen of the contact input signal 1 OFF detection timer is displayed on the digital display.

10. Select contact input signal 1 OFF detection timer from the table below with [▲] key or [▼]

key, and confirm by pressing “SEL”.

Table 2.4-6 List of set value

Set value Explanation

Initial value

(Default setting)

Setting and checking are not available unless contact input signal 1 is external switch signal input (N.O. type or N.C. type).

Setting of contact input signal 1 OFF detection timer Set range is 0 to 10sec.

Page 18

HRX-OM-M091

Chapter 2 Contact input/output communication

2.4 Setting and checking HRS Series

2-8

Contact input signal 2 Setting and checking

11. Press the [SEL] key once.

The set screen of contact input signal 2 is displayed on the digital display.

12. Select contact input signal 2 from the table below with [▲] key or [▼] key, and confirm by

pressing “SEL”.

Table 2.4-7 List of set values

Set values Explanation

Initial value

(Default setting)

Without input signal

○

Input of run/stop signal External switch signal input(N.O. type) External switch signal input (N.C. type)

Remote signal

∗

∗6：When the setting of the serial protocol is “Simplified communication protocol 2”,

“Remote signal” cannot be set.

Contact input signal 2 type Setting and checking

13. Press the [SEL] key once.

The set screen of contact input signal 2 type is displayed on the digital display.

14. Select contact input signal 2 type from the table below with [▲] key or [▼] key, and confirm

by pressing “SEL”.

Table 2.4-8 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available if the setting of contact input signal 2 is OFF.

Alternate signal

○

Momentary signal

∗

∗7:Can be set when the setting of contact input signal 2 is "Run/Stop signal input" or "Remote

signal"

Page 19

HRX-OM-M091

Chapter 2 Contact input/output communication

HRS Series 2.4 Setting and checking

2-9

Contact input signal 2 delay timer of reading Setting and checking

15. Press the [SEL] key once.

The set screen of contact input signal 2 delay timer of reading is displayed on the digital display.

16. Select contact input signal 2 delay timer of reading from the table below with [▲] key or [▼]

key, and confirm by pressing “SEL”.

Table 2.4-9 List of set values

Set values Explanation

Initial value

(Default setting)

Setting of contact input signal 2 delay timer

of reading.

Set range is 0 to 300 sec.

Contact input signal 2 OFF detection timer Setting and checking

17. Press the [SEL] key once.

The set screen of contact input signal 2 OFF detection timer is displayed on the digital display.

18. Select contact input signal 2 OFF detection timer from the table below with [▲] key or [▼]

key, and confirm by pressing “SEL”.

Table 2.4-10 List of set values

Set values Explanation

Initial value

(Default setting)

Setting and checking are not available unless contact input singal 2 is external switch signal input(N.O. type or N.C. type).

Setting of contact input signal 2 OFF

detection timer.

Set range is 0 to 10 sec.

Page 20

HRX-OM-M091

Chapter 2 Contact input/output communication

2.4 Setting and checking HRS Series

2-10

Contact output signal 1 function Setting and checking

19. Press the [SEL] key once.

The set screen of contact output signal 1 function is displayed on the digital display.

20. Select contact output signal 1 function from the table below with [▲] key or [▼] key, and

confirm by pressing “SEL”.

Table 2.4-11 List of set values

Set values Explanation

Initial value

(Default setting)

Without output signal Signal of operating status is output

○

Signal of remote status is output Signal for completion of preparation (TEMP

READY) Signal for the status of the operation stop alarm is output Signal for the status of the operation continue alarm is output Signal for the alarm status is output

Signal for selected alarm status is output Signal for Run timer set status is output Signal for Stop timer set status is output Signal for the recovery from power failure is

output Signal for anti-freezing setting is output

Pass through signal of contact input signal 1 Pass through signal of contact input signal 2

Signal output during automatic fluid filling

Contact output signal 1 operation Setting and checking

21. Press the [SEL] key once.

The set screen of contact output signal 1 operation is displayed on the digital display.

Page 21

HRX-OM-M091

Chapter 2 Contact input/output communication

HRS Series 2.4 Setting and checking

2-11

22. Select contact output signal 1 operation from the table below with [▲] key or [▼] key, and

confirm by pressing “SEL”.

Table 2.4-12 List of set values

Set values Explanation

Initial value

(Default setting)

N.O type

○

N.C type

Contact output 1 selected alarm Setting and checking

23. Press the [SEL] key once.

The set screen of digital output 1 selected alarm is displayed on the digital display.

24. Select contact output 1 selected alarm from the table below with [▲] key or [▼] key, and

confirm by pressing “SEL”.

Table 2.4-13 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the function setting of contact output 1 is selected alarm status signal.

Sets selection alarm. Set range is AL.01 to AL.36.

Contact output 2 function Setting and checking

25. Press the [SEL] key once.

The set screen of contact output 2 function is displayed on the digital display.

Page 22

HRX-OM-M091

Chapter 2 Contact input/output communication

2.4 Setting and checking HRS Series

2-12

26. Select contact output 2 function from the table below with [▲] key or [▼] key, and confirm

by pressing “SEL”.

Table 2.4-14 List of set values

Set values Explanation

Initial value

(Default setting)

Without output signal Signal of operating status is output Signal of remote status is output

○

Signal for completion of preparation (TEMP READY) Signal for the status of the operation stop alarm is output Signal for the status of the operation continue alarm is output Signal for the alarm status is output

Signal for selected alarm status is output Signal for Run timer set status is output Signal for Stop timer set status is output Signal for the recovery from power failure is

output Signal for anti-freezing setting is output

Pass through signal of contact input signal 1 Pass through signal of contact input signal 2

Signal output during automatic fluid filling

Contact output 2 operation Setting and checking

27. Press the [SEL] key once.

The set screen of contact output 2 operation is displayed on the digital display.

28. Select contact output 2 operation from the table below with [▲] key or [▼] key, and confirm

by pressing “SEL”.

Table 2.4-15 List of set values

Set values Explanation

Initial value

(Default setting)

N.O type

○

N.C type

Page 23

HRX-OM-M091

Chapter 2 Contact input/output communication

HRS Series 2.4 Setting and checking

2-13

Contact output 2 selected alarm Setting and checking

29. Press the [SEL] key once.

The set screen of contact output 2 selected alarm is displayed on the digital display.

30. Select contact output 2 selected alarm from the table below with [▲] key or [▼] key, and

confirm by pressing “SEL”.

Table 2.4-16 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the function setting of contact output 2 is selected alarm status signal.

Sets selection alarm. Set range is AL.01 to AL.36.

Contact output 3 function Setting and checking

31. Press the [SEL] key once.

The set screen of contact output 3 function is displayed on the digital display.

Page 24

HRX-OM-M091

Chapter 2 Contact input/output communication

2.4 Setting and checking HRS Series

2-14

32. Select contact output 3 function from the table below with [▲] key or [▼] key, and confirm

by pressing “SEL”.

Table 2.4-17 List of set values

Set values Explanation

Initial value

(Default setting)

Without output signal Signal of operating status is output Signal of remote status is output Signal for completion of preparation (TEMP

READY) Signal for the status of the operation stop alarm is output Signal for the status of the operation continue alarm is output Signal for the alarm status is output

○

Signal for selected alarm status is output Signal for Run timer set status is output Signal for Stop timer set status is output Signal for the recovery from power failure is

output Signal for anti-freezing setting is output

Pass through signal of contact input signal 1 Pass through signal of contact input signal 2

Signal output during automatic fluid filling

Contact output 3 operation Setting and checking

33. Press the [SEL] key once.

The set screen of contact output 3 operation is displayed on the digital display.

34. Select contact output 3 operation from the table below with [▲] key or [▼] key, and confirm

by pressing “SEL”.

Table 2.4-18 List of set values

Set values Explanation

Initial value

(Default setting)

N.O type N.C type

○

Page 25

HRX-OM-M091

Chapter 2 Contact input/output communication

HRS Series 2.4 Setting and checking

2-15

Contact output 3 selected alarm Setting and checking

35. Press the [SEL] key once.

The set screen of contact output 3 selected alarm is displayed on the digital display.

36. Select contact output 3 selected alarm from the table below with [▲] key or [▼] key, and

confirm by pressing “SEL”.

Table 2.4-19 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the function setting of contact output 1 is selected alarm status signal.

Sets selection alarm. Set range is AL.01 to AL.36.

Communication mode Setting and checking

37. Press the [SEL] key once.

The set screen of communication mode is displayed on the digital display.

38. Select communication mode【DIO】from the table below with [▲] key or [▼] key, and

confirm by pressing “SEL”.

Table 2.4-20 List of set values

Set value Explanation

Initial value

(Default setting)

Sets LOCAL mode.

○

Sets DIO mode. Sets SERIAL mode.

Page 26

HRX-OM-M091

Chapter 2 Contact input/output communication

2.5 Contact input signal HRS Series

2-16

2.5 Contact input signal

There are two contact input signals. As the default condition, contact input signal 1 is used for run/stop signal (signal type: alternate), and contact input signal 2 is not used. The input signals can be customized depending on the customer’s application.

Table 2.5-1 Contact input signal

Class of signal Signal configuration Timer

Description Display Description Display

Delay timer of reading

OFF

detection

Default setting

Alternate ALT - - ○

Run/stop signal

RUN

Momentary MT - -

External switch signal input (N.O)

SW_A Alternate ALT Used Used

External switch signal input (N.C)

SW_B Alternate ALT Used Used

Contact input

signal 1

Without intput signal

OFF －－ - -

Alternate ALT - -

Run/stop signal

RUN

Momentary MT - -

External switch signal input (N.O)

SW_A Alternate ALT Used Used

External switch signal input (N.C)

SW_B Alternate ALT Used Used

Alternate ALT - -

Remote signal RMT

Momentary MT - -

Contact input

signal 2

Without input signal

OFF －－ - - ○

2.5.1 Run/stop signal･Remote signal

1) Run/stop signal (Signal type: Alternate)

The product keeps operating while the input signal from the customer is ON.

OFF

Run

Stop

Product condition

Run/stop signal （Alternate）

Run/stop signal (Signal type: Momentary) The state changes when the input signal from the customer goes OFF. This signal operates while the product is stopped, and stops while the product is being operated. Maintain the ON condition for 300ms or longer.

OFF

Run

Stop

Product condition

Run/stop signal （Momentary）

300ms 300ms

Page 27

HRX-OM-M091

Chapter 2 Contact input/output communication

HRS Series 2.5 Contact input signal

2-17

3) Remote signal (Signal type: Alternate) The product becomes DIO REMOTE while the input signal from the customer is ON.

OFF

DIO REMOTE

DIO LOCAL

Product condition

Remote signal （Alternate）

4) Remote signal (Signal type: Momentary)

The state changes when the input signal from the customer goes OFF. If DIO LOCAL is set, it is switched to DIO REMOTE. If DIO REMOTE, it is switched to DIO LOCAL. Maintain the ON condition for 300ms or longer.

OFF

DIO REMOTE

DIO LOCAL

Product condition

Run/stop signal （Momentary）

300ms 300ms

5) Digital input signal 1 is for Run/Stop signal (Signal type: Alternate), digital input signal 2 is for

external switch signal (N.O. type) Refer to Chapter 2.5.2 for details of the external switch.

OFF

Run

Stop

Product condition

Run/Stop signal

OFF

External switch signal

Delay timer of reading

OFF Detection timer

③

④①

②

① The product starts operation when the Run/Stop signal from the user is turned on.

② It reads the signal of the external switch signal (N.O type) after the time which has been set for

the delay timer of reading.

The factory default setting of the delay timer of reading is 0sec. Refer to 2.4.2 for setting. .

③ When the external switch signal (N.O. type) has been turned off for the time set for OFF

detection timer, it is recognized as OFF.

The factory default setting of the OFF detection timer is 0sec. Refer to 1.4.2 for setting.

④ AL32 contact input 2 signal detection alarm is generated. The operation of the product stops.

"Operation stop" is the default setting for AL32. The product can be set to continue operation or not to detect the alarm. Refer to the “Installation / Operation” manual for details.

∗ The product stops operation when the Run/Stop signal is turned off during operation. Afterwards,

the alarm is not generated even if the external switch signal (N.O type) is turned off.

6) Input signal is not connected to either contact input signal 1 or contact input signal 2. This product cannot be controlled by the contact input.

7) Remote signal is connected to either contact input signal 1 or contact input signal 2. This product cannot be controlled by the contact input.

Page 28

HRX-OM-M091

Chapter 2 Contact input/output communication

2.5 Contact input signal HRS Series

2-18

2.5.2 Signal of the external switch

This product can be monitored during operation by reading the signal of the external switch prepared by the customer. The product stops monitoring when it stops operation. This product generates an alarm and stops operating when a problem is detected from the external switch. Select the external switch 1 or 2 or both depending on the customer’s system. Refer to

2.4.2 for setting. The number of monitored external switches depends on the communication mode. Refer to Table 2.5-2 In the communication mode in which the external switches 1 and 2 are available, two products can be monitored simultaneously. If a problem is detected by one or both external switches, an alarm is generated and the operation stops. You can set the product to continue operation or not to detect the alarm. Refer to the “Installation / Operation” manual for details

Table 2.5-2 Cross reference of communication modes and external switch monitoring

DIO SERIAL

Simple

communication

protocol pattern

LOCAL

DIO LOCAL DIO REMOTE MODBUS

1 2

External switch 1

○ × × ○ ○ ×

External switch 2

○ ○ ○ ○ ○ ○

Run status of this product

Run

Stop

External switch

OPEN

Operation start

Signal reading

start

Delay timer of reading

OFF detection timer

Alarm

generation

Operation stops due to the alarm.

Fig 2.5-1 Timing chart of external switch monitoring

■Delay timer of reading

If the signal of the external switch prepared by the customer is not closed instantly when the product is operated, set the delay timer for reading. By setting this timer, the external switch monitoring starts after the time set by the delay time of reading since the operation start.

“0" is the default setting. Set a time which is suitable for your environment.

Example} When using a flow switch

When operation is started, it takes time for the fluid to reach the piping and the flow

switch to detect the flow. Set the time for the flow switch to start.

■OFF detection timer

If you do not want the alarm to be generated instantly when the external switch prepared by the customer is in open status, but instead want the alarm to be generated after the switch has been open for a specific time (continuous open status), set the OFF detection timer.

This timer enables the alarm to be generated when the time set for OFF detection time passes after the switch is in OPEN status.

The default setting is 0 sec. Set a time which is suitable for your application.

■Contact input

N.O type or N.C. type can be selected for the external switch. Set the signal which is suitable for the external switch prepared by the customer.

Page 29

HRX-OM-M091

Chapter 2 Contact input/output communication

HRS Series 2.6 Contact output signal

2-19

2.6 Contact output signal

There are three contact output signals. As the default setting, contact output signal 1 is for operating condition (N.O type), contact output signal 2 is for remote signal (N.O type), and contact output signal 3 is for alarm signal (N.C type). Refer to Table 2-6-1. .Depending on the product condition, contact output signal is turned on (closed) or turned off (open).

The signals can be customized depending on the customer’s application. The Table 2.6-2 shows operation of contact output signal.

【Tips】

All contact output signals are turned off (open) when the power is not supplied.

Table2.6-1 Contact output signal (Default setting)

Class of signal Signal configuration

Description Display Description Display

Remarks

Contact output signal 1 Run status signal RUN

N.O type

Contact output signal 2 Remote signal RMT

N.O type

Contact output signal 3 Alarm signal ALM

N.C type

Non ｇeneration（not set）

Generation（set）

OFF

Digital output signal （N.O type）

Product condition 　　　（Set condition）

OFF

Digital output signal （N.C type）

Page 30

HRX-OM-M091

Chapter 2 Contact input/output communication

2.6 Contact output signal HRS Series

2-20

Table 2.6-2 Operation of contact output signal

Class of signal

Display Function

Oper ation

Operation of contact output signal

N.O

type

Normally, output signal is OFF (open)

OFF Without output

N.C

type

Normally, output signal is ON (close)

N.O type

When the product operates, signal turns on.

RUN Run status signal

N.C

type

When the product operates, signal turns off.

N.O type

When the product becomes DIO REMOTE, signal turns on.

RMT Remote status signal

N.C

type

When the product becomes DIO LOCAL, signal turns off.

N.O type

When the product becomes completion of preparation (TEMP READY), signal turns on.

RDY

Signal for completion of preparation (TEMP READY)

N.C

type

When the product becomes completion of preparation

(TEMP READY), signal turns off. N.O type

When operation stop alarm occurs, signal turns on.

A.STP

Signal for operation stop alarm

N.C

type

When operation stop alarm occurs, signal turns off. N.O

type

When continuing operation alarm occurs, signal turns on.

A.RUN

Signal for continuing operation alarm

N.C

type

When continuing operation alarm occurs, signal turns off. N.O

type

When alarm occurs, signal turns on.

ALM

Alarm status signal

N.C

type

When alarm occurs, signal turns off. N.O

type

The signal is turned ON when the selected alarm goes off.

A.SEL

Signal for selection alarm

N.C

type

The signal is turned OFF when the selected alarm goes off. N.O

type

The signal is turned ON when the run timer is set.

ON.TM

Signal for operation start timer setting

N.C

type

The signal is turned OFF when the run timer is set. N.O

type

The signal is turned ON when the stop timer is set.

OF.TM

Signal for operation stop timer setting

N.C

type

The signal is turned OFF when the stop timer is set. N.O

type

The signal is turned ON when the power recovery is set.

P. R S T

Signal for power recovery setting

N.C

type

The signal is turned OFF when the power recovery is set. N.O

type

The signal is turned ON when the anti-freezing is set.

F. P.

Signal for anti-freezing setting

N.C

type

The signal is turned OFF when the anti-freezing is set.

N.O type

Outputs the signal which is input to the contact input signal.

Input signal is ON Æ Output signal is ON

INP1. ∗1

Pass through signal of contact input signal 1

N.C

type

Outputs the reverse of the signal which is input to the contact

input signal 2.

Input signal is OFF Æ Output signal is ON N.O

type

Outputs the signal which is input to the contact input signal.

Input signal is ON Æ Output signal is ON

INP2∗1

Pass through signal of contact input signal 2

N.C

type

Outputs the reverse of the signal which is input to the contact

input signal 2. Input signal is OFF Æ Output signal is ON N.O

type

Signal is turned ON during automatic fluid filling.

∗

A.F.

Signal output during automatic fluid filling

N.C

type

Signal is turned OFF during automatic fluid filling.

∗

∗1: The signal of the product without an option [Automatic filling] also changes. ∗2：Signal changes even when option J [Automatic fluid filling] is not selected.

Page 31

HRX-OM-M091

Chapter 3 Serial communication

HRS Series 3.1 Precautions wiring communication

3-1

Chapter 3 Serial communication

Serial communication (RS-485/RS232C) enables the remote control of run/start of the product, temperature setting and details of product condition, and alarm condition can be obtained.

The operating state of the product (run/stop) and the temperature setting can be monitored by sending a request message made by the program of the host computer (e.g. PC).

MODBUS communication and simple communication protocol can be selected as the serial communication protocol. This chapter illustrates the common specifications of serial communication. Chapter 4 and 5 illustrate each protocol.

3.1 Precautions wiring communication

○Communication wiring

A communication cable that connects the product and customer system is not included with the product. Please prepare a cable, referring to 3.3 ‘’Connected explanation’’ In order to avoid malfunction, do not connect to any place other than those shown in 3.3 ‘’Connected explanation’’.

3.2 Communication specification

Table 3.2-1 Serial communication specification

Item Specification

Connector type (for the product) D-sub9P type Female connector Standard

Select from EIA RS-485／RS-232C

Circuit type Half duplex Half duplex Transmission type Start-stop Protocol

MODBUS terminal

∗1

／Simple communication protocol

Terminal resistance

Select from with terminal resistance（120Ω）／Without terminal resistance

：Default setting ∗1：Refer to Modicon Co. protocol specifications "PI-MBUS-300 Rev.J".

Page 32

HRX-OM-M091

Chapter 3 Serial communication

3.3 Connected explanation HRS Series

3-2

3.3 Connected explanation

Fig 3.3-1 shows the wiring when RS-485 is selected as the communication standard. Fig 3.3-2 shows the wiring when RS-232C is selected. A communication cable that connects the product and customer system is not included with the product. Prepare a cable, referring to Fig 3.3-1 or Fig

3.3-2.

SD+

SD-

SD+

SD- SG

Terminal

resistance

Master This product

(first slave)

SD+

SD-

This product

（second slave）

SD+

SD-

This product

（31

slaves）

Terminal

resistance120Ω

Fig 3.3-1 RS-485 connector connection

【Tips】

・1 master : 1 product, or 1 master: N products.

In the latter case, up to 31 products can be connected.

・Both ends of the communication connection (the end nodes) need to be

connected to the higher level computer.

・The terminal resistance of this product can be set by the operation display

panel. Refer to ‘’4.3.2 Setting and checking’’,’’5.3.2 Setting and checking’’.

Master This product

Fig 3.3-2 RS-232C connector connection

Page 33

HRX-OM-M091

Chapter 4 MODBUS communication function

HRS Series 4.1 Precautions for communication

4-1

Chapter 4 MODBUS communication

function

MODBUS protocol is a communication protocol developed by Modicon. It is used to communicate with a PC or PLC.

This communication has the following features.

・Controls run/stop.

・Sets and reads the circulating fluid set temperature.

・Reads the circulating fluid discharge temperature.

・Reads the condition of the product.

・Reads the alarm generating condition of the product.

Refer to “4.10 Register Map” for the register of the product.

4.1 Precautions for communication

4.1.1 Precautions after wiring and before communication

○Check or set the each communication setting by the operation display

panel.

・The communication specification shall be the customer’s communication

standard.

・The serial protocol shall be the MODBUS.

・The communication mode shall be the SERIAL mode.

Other modes can perform reading, but only SERIAL mode can perform writing.

○Check or set the communication parameters using the operation display panel.

Check or set the communication speed so that the product synchronizes with the host computer (master) prepared by the customer.

○Check the slave address by the operation display panel.

No response is returned when a request message is sent from a slave address other than those set in the product.

Page 34

HRX-OM-M091

Chapter 4 MODBUS communication function

4.2 Communication specification HRS Series

4-2

4.1.2 Precautions for communicating

○Allow a suitable interval between requests.

To send request messages in series, wait for 100 msec. or longer after receiving a response message from the product before sending the next message.

○Retry (resend request message).

The response may not be returned due to noise. If no message is returned 1sec. after sending a request message, resend the request message.

○If necessary send a read request message to check if it was written correctly.

Message to notify the completion of the process is returned when the action for the written request message is completed.

Send a read request message to confirm if the setting was written as requested.

○Setting limit of circulating fluid temperature

When the circulating fluid set temperature is written by communication, the data is stored in FRAM. When the product restarts, it restarts with the value which was set before the restart. The number of times it is possible to overwrite FRAM is limited. Data is only stored in FRAM when it receives a circulating fluid set temperature which is different from the previous temperatures. Please check how many times it is possible to overwrite FRAM, and avoid unnecessary changes of the circulating fluid set temperature during communication

4.2 Communication specification

Table 4.2-1 Communication specification of MODBUS communication function

Item Specification

Standard

Select from EIA RS-485／RS-232C

Communication speed

Select from 9600bps／19200bps

Data・bit length

7bit

Stop・bit length

1bit

Data transfer direction LSB Parity Even parity Letter code ASCII mode Slave address set range Select from 1 to 99 address Error check LRC method

：Default setting

Page 35

HRX-OM-M091

Chapter 4 MODBUS communication function

HRS Series 4.3 Setting and checking

4-3

4.3 Setting and checking

4.3.1 Setting and checking items

The table below explains the setting items of the MODBUS communication function and the initial values.

Table 4.3-1 Communication setting items

Display Item Contents

Initial value

(Default setting)

Communication mode Sets communication mode of this product. LOC Serial protocol Sets serial communication protocol. MDBS Communication specification

Sets standard of the serial communication. 485

RS-485 terminal Sets of the terminal of RS-485. OFF

Slave address (MODBUS)

Sets slave address of MODBUS protocol. [----] is displayed when the setting of serial protocol is not MODBUS.

Communication speed (MODBUS)

Sets communication speed of MODBUS protocol. [----] is displayed when the setting of serial protocol is not MODBUS.

19.2

Page 36

HRX-OM-M091

Chapter 4 MODBUS communication function

4.3 Setting and checking HRS Series

4-4

4.3.2 Setting and checking

Communication Setting and checking

1. Press and hold the [MENU] key for 2 sec.

Repeat pressing the key until the setting screen for communication mode [

] appears

on the digital display.

2. Select “SER” from the table below with the ▲key, and confirm with “SEL”.

Table 4.3-2 List of set values

Set values Explanation

Initial value

(Default setting)

Sets LOCAL mode.

○

Sets DIO mode. Sets SERIAL mode.

∗

∗1：If the serial protocol is “Simple communication protocol 2” and the contact input 1 is

“external switch signal” or contact input 2 is “remote signal”, “SERIAL mode” cannot be set.

Serial protocol Setting and checking

3. Press the [SEL] key once.

The set screen of serial protocol is displayed on the digital display.

［MENU］

Press and

hold

［MENU］

Press and

hold

［MENU］

Press and

hold

［MENU］

Press and

hold

Page 37

HRX-OM-M091

Chapter 4 MODBUS communication function

HRS Series 4.3 Setting and checking

4-5

4. Select serial protocol from the table below with [▲] key or [▼] key, and confirm by pressing

“SEL”.

Table 4.3-3 List of set values

Set values Explanation

Initial value

(Default setting)

MODBUS protocol

○

Simple communication protocol 1 Simple communication protocol 2

∗

∗2：When the setting of the contact input 2 is “Remote signal”, “Simplified

communication protocol 2” cannot be set.

Communication specification Setting and checking

5. Press the [SEL] key once.

The set screen of communication specification is displayed on the digital display.

6. Select communication specification from the table below with [▲] key or [▼] key, and

confirm by pressing “SEL”.

Table 4.3-4 List of set values

Set values Explanation

Initial value

(Default setting)

RS-232C standard RS-485 standard

○

RS-485 terminal Setting and checking

7. Press the [SEL] key once.

The set screen of RS-485 terminal is displayed on the digital display.

8. Select RS-485 terminal from the table below with [▲] key or [▼] key, and confirm by

pressing “SEL”.

Table 4.3-5 List of set values

Set values Explanation

Initial value

(Default setting)

Without terminal

○

With terminal

Page 38

HRX-OM-M091

Chapter 4 MODBUS communication function

4.3 Setting and checking HRS Series

4-6

Slave addresses（MODBUS）Setting and checking

9. Press the [SEL] key once.

The set screen of slave addresses (MODBUS) is displayed on the digital display.

10. Select slave addresses (MODBUS) from the table below with [▲] key or [▼] key, and

confirm by pressing “SEL”.

Table 4.3-6 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the serial protocol setting is MODBUS.

Sets of slave addresses for MODBUS. Set range is 1 to 99.

Communication speed（MODBUS）Setting and checking

11. Press the [SEL] key once.

The set screen of communication speed (MODBUS) is displayed on the digital display.

12. Select communication speed (MODBUS) from the table below with [▲] key or [▼] key, and

confirm by pressing “SEL”.

Table 4.3-7 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the serial protocol setting is MODBUS.

9600bps

19200bps

○

Page 39

HRX-OM-M091

Chapter 4 MODBUS communication function

HRS Series 4.4 Communication sequence

4-7

4.4 Communication sequence

Starts with a request message from the customer’s system (host), and

finishes with a response message from the product (slave). This product

operates as a slave. It does not send any requests.

●Positive response

Based on the request message, reads

response.

●Negative response

Returns a negative message when the received

request message is not normal. Refer to ‘’4.9

Negative response’’.

●No response

No response is returned when there is an error in

“slave address specification” or ”LRC”.

Customer's system

(host)

This product

(slave)

No response

10～200ms

（

）

（

）

Page 40

HRX-OM-M091

Chapter 4 MODBUS communication function

4.5 Message configuration HRS Series

4-8

4.5 Message configuration

4.5.1 Message format

The message configuration is shown below. This product communicates in ASCII mode. ASCII mode is used from Start to End.

1) 2) 3) 4) 5) 6)

Start Slave Address Function Data LRC End

[:] XX XX XX XX XX

～

XX XX XX [CR] [LF]

1) Start

The start of the message. [:](3Ah)

2) Slave Address（1 to 99 3031h to 3939h）

This is a number to identify this product. “1" is the default setting. This can be changed by the operation display panel.

3) Function (Refer to ‘’4.6 Function codes’’.)

Command is assigned.

4) Data

Depending on the function, the address and the number of the register, the value of reading/writing are assigned.

5) LRC

LRC method

Refer to ‘’4.7 LRC’’.

6) END

The end of the message. [CR](0Dh)＋[LF](0Ah)

A response message will not be returned unless the request includes [:] and [CR][LF]. This product clears all previously received code when [:] is received.

Page 41

HRX-OM-M091

Chapter 4 MODBUS communication function

HRS Series 4.5 Message configuration

4-9

The communication example is expressed in hexadecimal value with [ ]. The actual communication is performed in ASCII code. Refer to the request / response message in this section.

4.5.2 Message example

The example shows communication with the conditions below.

○Slave Address：No.1 ○Read seven consecutive data from register 0000h.

(Read circulating fluid discharge temperature.)

 Communication example

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address 03 Function 03 Function 0000

Head address of specified register

Quantity of bytes to read

0001

Quantity of register to read

00EE

Information of 0000h (circulating fluid discharge temperature: 23.8

LRC

0C LRC

 Request message (Master to Slave)

Start Slave Address Function Data LRC End

3A 30 31 30 33 46 42 0D 0A

Read Address Quantity to Read

Hi Lo Hi Lo

30 30 30 30 30 30 30 31

 Response message (Slave to Master)

Start Slave Address Function Data LRC End

3A 30 31 30 33 30 43 0D 0A

Read Data1

Byte Count

Hi Lo

30 32 30 30 45 45

This product

(Request): 010300000001FB [CR][LF]

(Response): 01030200EE0C [CR][LF]

Your system

Data is sent and received in ASCII code.

Page 42

HRX-OM-M091

Chapter 4 MODBUS communication function

4.6 Function codes HRS Series

4-10

4.6 Function codes

Table 4.6-1 shows function codes to read or write register.

Table 4.6-1 Function codes

NO Code Name Function

1 03(03h) Read holding registers Reading multiple registers 2 06(06h) Preset single register

Writing registers

∗

3 16(10h) Preset multiple registers Writing multiple registers 4 23(17h) Read/write 4x registers Reading/writing multiple registers

∗1：Broadcast is not supported.

4.7 LRC

LRC checks the content of the message other than [:] of START and [CR][LF] of END. The sending side calculates and sets. The receiving side calculates based on the received message, and compares the calculation result with the received LRC. The received message is deleted if the calculation result and received LRC do not match.

Add up the byte number of the message consisting of 8 consecutive bits. The result except the carry (overflow) is converted to 2’s complement.

 Calculation example

LRC message for calculation ]0106000B00FE Calculation

○Addition 01h＋06h＋00h＋0Bh+00h+FEh＝110h ○Object 110h→10h ○complement of 2 10h→EFh→F0h

LRC is F0h

Sending message [:]0106000B00FEF0[CR][LF]

Page 43

HRX-OM-M091

Chapter 4 MODBUS communication function

HRS Series 4.8 Explanation of function codes

4-11

4.8 Explanation of function codes

4.8.1 Function code：03 Reading multiple registers

 Request message <Normal> (Master to Slave)

Start Slave Address Function Data LRC End

[:] XX XX [0] [3] XX XX [CR] [LF]

Read Address Quantity to Read

Hi Lo Hi Lo

XX XX XX XX XX XX XX XX

 Response message<Normal> (Slave to Master)

Start Slave Address Function Data LRC End

[:] XX XX [0] [3] XX XX [CR] [LF]

Read Data1 Read Data n

Byte Count

Hi Lo Hi Lo

XX XX XX XX XX XX XX XX XX XX

 Communication example

○Slave Address: No.1 ○Read seven consecutive data from register 0000h.

(Read circulating fluid discharge temperature, circulating fluid discharge

pressure, status information, alarm information.)

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address 03 Function 03 Function 0000 Head address of specified register 0E Quantity of bytes to read

0007 Quantity of register to read 00D4

Information of 0000h (circulating fluid discharge temperature)

F5 LRC 0000 Information of 0001h (Reserved)

000D

Information of 0002h (circulating fluid

discharge pressure) 0000 Information of 0003h (Reserved) 0201 Information of 0004h (Status flag) 0000 Information of 0005h (Alarm flag 1) 0000 Information of 0006h (Alarm flag 2) 0A LRC

This product

(Request):010300000007F5 [CR][LF]

(Response):01030E00D40000000D00000201000000000A [CR][LF]

Your system

Data is sent and received in ASCII code.

Page 44

HRX-OM-M091

Chapter 4 MODBUS communication function

4.8 Explanation of function codes HRS Series

4-12

4.8.2 Function code：06 Writing registers

Write data to assigned address.

 Request message <Normal> (Master to Slave)

Start Slave Address Function Data LRC End

[:] XX XX [0] [6] XX XX [CR] [LF]

Write Address Write Data

Hi Lo Hi Lo

XX XX XX XX XX XX XX XX

 Response message <Normal> (Slave to Master)

Start Slave Address Function Data LRC End

[:] XX XX [0] [6] XX XX [CR] [LF]

Write Address Write Data

Hi Lo Hi Lo

XX XX XX XX XX XX XX XX

 Communication example

○Slave Address: No 1

○Write data to register 000Ch

(Commands to run)

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address 06 Function 06 Function 000C Address of specified register 000C Address of register to write 0001 Information written to 000Ch (Stop flag) 0001 Information of register to write EC LRC EC LRC

This product

(Request):0106000C0001EC [CR][LF]

(Response):0106000C0001EC [CR][LF]

Your system

Data is sent and received in ASCII code.

Page 45

HRX-OM-M091

Chapter 4 MODBUS communication function

HRS Series 4.8 Explanation of function codes

4-13

4.8.3 Function code：16 Writing multiple registers

 Request message <Normal> (Master to Slave)

Start Slave Address Function Data LRC End

[:] XX XX [1] [0] XX XX [CR] [LF]

Write Address Quantity to Write

Hi Lo Hi Lo

XX XX XX XX XX XX XX XX

Write Data1 Write Data n

Byte Count

Hi Lo Hi Lo

XX XX XX XX XX XX XX XX XX XX

 Response message <Normal> (Slave to Master)

Start Slave Address Function Data LRC End

[:] XX XX [1] [0] XX XX [CR] [LF]

Write Address Quantity to Write

Hi Lo Hi Lo

XX XX XX XX XX XX XX XX

 Communication example

○Slave Address: No 1 ○Write two consecutive data from register 000Bh.

(Commands to change of circulating fluid set temperature <39.9

C > and run.)

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address 10 Function 10 Function 000B Head address of specified register 000B Head address of register to write 0002 Quantity of register to write 0002 Quantity of register to write 04 Quantity of byte to read E2 LRC 018F Information written to 000Bh (Circulating

fluid set temperature) 0001 Information written to 000Ch (Stop flag) 4D LRC

(Request):0110000B000204018F00014D [CR][LF]

(Response):0110000B0002E2 [CR][LF]

Your system This product

Data is sent and received in ASCII code.

Page 46

HRX-OM-M091

Chapter 4 MODBUS communication function

4.8 Explanation of function codes HRS Series

4-14

4.8.4 Function code：23 Reading/writing multiple registers

Register content of assigned points of assigned address is read. Write the register data from the specified address with specified points simultaneously.

 Request message <Normal> (Master to Slave)

Start Slave Address Function Data LRC End

[:] XX XX [1] [7] XX XX [CR] [LF]

Read Address Quantity to Read Write Address Quantity to Write

Hi Lo Hi Lo Hi Lo Hi Lo

XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX

Write Data1 Write Data n

Byte Count

Hi Lo Hi Lo

XX XX XX XX XX XX XX XX XX XX

 Response message <Normal> (Slave to Master)

Start Slave Address Function Data LRC End

[:] XX XX [1] [7] XX XX [CR] [LF]

Read Data1 Read Data n

Byte Count

Hi Lo Hi Lo

XX XX XX XX XX XX XX XX XX XX

Page 47

HRX-OM-M091

Chapter 4 MODBUS communication function

HRS Series 4.8 Explanation of function codes

4-15

 Communication example

○Slave Address: No 1

○Read three consecutive data from register 0004h, and write two

consecutive data from register 000Bh.

(Command to change the circulating fluid set temperature to <15.5

C>,

and read status and alarm information.)

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address 17 Function 17 Function 0004 Head address of specified register 06 Quantity of byte to read 0003 Quantity of register to read 0000

Information of 0004h (Status flag）

000B Head address of specified register 0000 Information of 0005h (Alarm flag 1) 0002 Quantity of register to write 0000 Information of 0006h (Alarm flag 2) 04 Quantity of byte to write E2 LRC

009B

Information written to 000Bh (Circulating

fluid set temperature) 0001 Information written to 000Ch (Stop flag) 34 LRC

(Request):011700040003000B000204009B000134 [CR][LF]

(Response):011706000000000000E2 [CR][LF]

Your system This product

Data is sent and received in ASCII code.

Page 48

HRX-OM-M091

Chapter 4 MODBUS communication function

4.9 Negative response HRS Series

4-16

4.9 Negative response

A negative response is returned when the following request message is received.

1) When unspecified function code is used.

2) An address out of range is specified.

3) The data field is not normal.

 Negative response message (Slave to Master)

1) 2) Start Slave Address Function Error Code LRC End

[:] XX XX [0] [3] XX XX XX XX [CR] [LF]

1) Function

Assign the value consisting of the request function code (hexadecimal value) plus 80h in ASCII code.

2) Error Code

Assign error code below.

01：Function code of a command is outside the standard

02：The specified address of register is outside the range.

03：Data field of a command is not normal.

 Communication example

○Slave Address: No 1

○Read seven consecutive data from register 0100h which is out of range.

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address 03 Function 83 Function (03h+80h)

0100 Head address of register out of range 02

Error Code (Specified register address is

out of range.) 0007 Quantity of register to read 7A LRC F4 LRC

This product

(Request):010301000007F4 [CR][LF]

(Response):0183027A [CR][LF]

Your system

Data is sent and received in ASCII code.

Page 49

HRX-OM-M091

Chapter 4 MODBUS communication function

HRS Series 4.10 Register Map

4-17

4.10 Register Map

Bit Format

Address

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

R/W

-110.0 to 150.0oC = FBB4h to 5DCh （0.1 oC /dig）

0000h

Circulating fluid discharge temperature

-166.0 to 302.0

F = F984h to BCCh （0.1 oF /dig）

0001h Reserved

0.00 to 3.00MPa = 0h to 12Ch （0.01MPa/dig）

0002h

Circulating fluid discharge pressure

0 to 435PSI = 0h to 1B3h （1PSI/dig）

0003h

Electric

resistivity of the

circulating fluid

0 to 4.5MΩ･cm＝0h to 2dh（0.1MΩ･cm /dig）

0004h Status flag

0005h Alarm flag 1

0006h Alarm flag 2

0007h Alarm flag 3

0008h Reserved

0009h Reserved

000Ah Reserved

5.0 to 40.0 oC = 32h to 190h （0.1 oC /dig）

000Bh

Circulating fluid set temperature

41.0 to 104.0

F = 19Ah to 410h （0.1 oF /dig）

000Ch Reserved

∗

000Dh Reserved

000Eh Reserved

000Fh Reserved

R/W

∗1：Commands to run

4.10.1 Circulating fluid discharge temperature

Read the circulating fluid discharge temperature in the selected temperature unit (°C or °F). Read the circulating fluid discharge temperature which is displayed on the operation display panel PV. (Offset temperature is displayed if offset function is set).

4.10.2 Circulating fluid discharge pressure

Read the circulating fluid discharge pressure in the selected pressure unit (MPa or PSI).

4.10.3 Electric resistivity of the circulating fluid

Electric resistivity (DI level) of the circulating fluid is informed. The value is 0 MΩ･cm when the optional [Electric resistivity sensor] is invalid.

Page 50

HRX-OM-M091

Chapter 4 MODBUS communication function

4.10 Register Map HRS Series

4-18

4.10.4 Status flag

The status of the product is read by the following assignment.

Name Status flag

Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Bit Name Explanation

0 Run flag

Run status (Include the independent operation of the pump) 0= Stop 1=Run

1 Operation stop alarm flag

Operation stop alarm given off status 0= Not occurred 1= Operation stop alarm given off

Operation continued alarm flag

Operation continued alarm given off status 0= Not occurred 1= Operation continued alarm

given off

3 Unused

4 Press Unit flag

Pressure unit set status 0=MPa 1=PSI

5 Remote status flag

Remote status 0= Other than SERIAL mode 1=SERIAL mode

6 Unused 7 Unused 8 Unused

Completion of preparation (TEMP READY) flag

Completion of preparation (TEMP READY) status 0= Condition isn’t formed 1= Condition is formed

10 Temperature unit flag

Temperature unit set status 0= Centigrade（

C） 1= Fahrenheit（oF）

11 Run timer flag

Run timer set status 0=Not set 1= Set

12 Stop timer flag Stop timer set status 0= Not set 1=Set

13 Reset after power failure flag

Reset after power failure set status 0= Not set 1= Set

14 Anti-freezing flag

Anti-freezing set status 0= Not set 1= Set

15 Automatic fluid filling flag

Automatic fluid filling condition 0= Stop 1= Fluid

∗ The signal of the product without an option

[Automatic filling] also changes.

Page 51

HRX-OM-M091

Chapter 4 MODBUS communication function

HRS Series 4.10 Register Map

4-19

4.10.5 Alarm flag

Each type of alarm which occurs in the product is read with the following assignment.

Name Alarm flag 1

Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Name Alarm flag 2

Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Name Alarm flag 3

Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Bit Name Explanation

0 Low level in tank 1

High circulating fluid discharge temp.

Circulating fluid discharge temp. rise

Circulating fluid discharge temp.

High circulating fluid return temp.

High circulating fluid discharge pressure

Abnormal pump operation

Circulating fluid discharge pressure rise

Circulating fluid discharge pressure drop

High compressor intake temp.

Low compressor intake temp.

Low super heat temperature

High compressor discharge pressure

Unused

Refrigerant circuit pressure (high pressure side) drop

Alarm flag 1

Refrigerant circuit pressure (low pressure side) rise

Refrigerant circuit pressure (low pressure side) drop

Compressor overload

Communication error

Memory error

DC line fuse cut

Circulating fluid discharge temp. sensor failure

Circulating fluid return temp. sensor failure

Compressor intake temp. sensor failure

Circulating fluid discharge pressure sensor failure

Compressor discharge pressure sensor failure

Compressor intake pressure sensor failure

Maintenance of pump

Maintenance of fan motor

Maintenance of compressor

14 Contact input 1 signal detection alarm

Alarm flag 2

15 Contact input 2 signal detection alarm

Alarm given off status 0= Not occurred 1= Occurred

Page 52

HRX-OM-M091

Chapter 4 MODBUS communication function

4.10 Register Map HRS Series

4-20

Bit Name Explanation

0 Water leakage 1 DI level rise 2 DI level drop 3 DI sensor error 4 Unused 5 Unused 6 Unused 7 Unused 8 Unused 9 Unused 10 Unused 11 Unused 12 Unused 13 Unused 14 Unused

Alarm flag 3

15 Unused

Alarm given off status 0= Not occurred 1= Occurred

・The current alarm flag bit assignment will be changed in the future due to the addition of

optional functions.

・Unused bit is fixed to 0.

Page 53

HRX-OM-M091

Chapter 4 MODBUS communication function

HRS Series 4.10 Register Map

4-21

4.10.6 Circulating fluid set temperature

The circulating fluid set temperature can be set by specifying the circulating fluid set temperature with the selected temperature unit (°C or °F) during SERIAL mode.

If the temperature exceeds the upper limit of the circulating fluid set temperature range, the circulating fluid set temperature is changed to the upper limit value. If it is lower than the lower limit, the circulating fluid set temperature is changed to the lower limit value.

4.10.7 Operation Start Command

The operation can be controlled by sending the operation start command during SERIAL mode.

0=Run stop 1=Run start

Page 54

HRX-OM-M091

Chapter 4 MODBUS communication function

4.10 Register Map HRS Series

4-22

Page 55

HRX-OM-M091

Chapter 5 Simple communication protocol function

HRS Series 5.1 Precautions for communication

5-1

Chapter 5 Simple communication

protocol function

Data can be read / written by this communication protocol. This protocol complies with SMC thermo-cooler HRG, HRGC series.

This communication has the following features.

・Sets and reads the circulating fluid set temperature.

・Reads the circulating fluid discharge temperature.

5.1 Precautions for communication

5.1.1 Precautions after wiring and before communication

○Check or set each communication setting by the operation display panel.

・The communication specification shall be the customer’s communication

standard.

・The serial protocol shall be the simple communication protocol 1 or 2.

Simple communication protocol 1：Operation display panel controls

the start and stop of the product.

Simple communication protocol 2：Controls the start and stop of the

product remotely.

Refer to chapter 2.4 for remote setting when this protocol is selected.

・The communication mode shall be the SERIAL mode.

Other modes can perform reading, but only SERIAL mode can perform writing of values.

○Check or set the communication parameters using the operation display panel.

Check or set the communication speed, the presence of BCC, data length, parity check, stop bit length, response delay time, and communication range (RO or RW) to synchronize the product with the host computer (master) prepared by the customer.

○Check the slave address of this product.

No response is returned when a request message is sent from a slave address other than those set in the product.

Page 56

HRX-OM-M091

Chapter 5 Simple communication protocol function

5.1 Precautions for communication HRS Series

5-2

5.1.2 Precautions for communicating

○Check the data digit number and the decimal point location when requesting to write the set value.

○Allow a suitable interval between requests.

To send request messages in series, wait for 100msec. or longer after receiving a response message from the product before sending the next message.

○No response is returned for a request message of a command which is not supported by the product.

○Retry (resend request message).

The response may not be returned due to noise. If no message is returned after 1sec. of sending a request message, resend the request message.

○If necessary send a read request message to check if it was written correctly.

Message to notify the completion of the process is returned when the action for the written request message is completed.

5.1.3 Precautions after the completion of the communication

○Send the data storage request (STR) if necessary.

Data which is set by communication is stored in RAM. Set values stored in RAM are deleted when the power supplied to the product is cut. When the power is supplied again, operation starts with the values set before communication (values stored in FRAM of the product).

Store the values set by communication in FRAM (rewrite FRAM) by sending a data storage request message (STR) before cutting the power supply to the product.

Please check how many times it is possible to write to FRAM, and avoid unnecessary rewriting of the data during communication

Page 57

HRX-OM-M091

Chapter 5 Simple communication protocol function

HRS Series 5.2 Communication specification

5-3

5.2 Communication specification

Table 5.2-1 Communication specification of simple communication protocol

Item Specification

Standard Select from EIA RS-485/RS-232C Communication speed Select from 1200bps/2400bps/4800bps/9600bps/19200bps Data･bit length

Select from 7bit/8bit

Stop･bit length Select from 1bit、2bit Parity Select from without parity ,odd number ,even number Letter code ASCII mode Slave address set range Select from 1 to 99 Response delay time setting Select from 0 to 250[msec]

Communication range

RO(Can read data only), Select from RW(can read and write data)

BCC Select from with BCC , without BCC

Error check

EXOR algorithm of all data from STX to ETX is read only when BCC is selected.

：Default setting

Page 58

HRX-OM-M091

Chapter 5 Simple communication protocol function

5.3 Setting and checking HRS Series

5-4

5.3 Setting and checking

5.3.1 Setting and checking items

The table below explains the setting items of the simple communication protocol function and the initial values.

Table 5.3-1 Communication setting items

Display Item Contents

Initial value

(Default setting)

Communication mode Sets communication mode. LOC Serial protocol Sets serial communication protocol. MDBS

Communication specification

Sets standard of the serial communication.

485

RS-485 terminal Sets of the terminal of RS-485. OFF Slave address (Simple communication protocol)

Sets slave address of simple communication protocol. [----] is displayed when the setting of serial protocol is not simple communication protocol.

Communication speed (Simple communication protocol)

Sets communication speed of simple communication protocol. [----] is displayed when the setting of serial protocol is not simple communication protocol.

9.6

BCC (Simple communication protocol)

Sets error detection code of communication of simple communication protocol. [----] is displayed when the setting of serial protocol is not simple communication protocol.

Data length (Simple communication protocol)

Sets data length. [----] is displayed when the setting of serial protocol is not simple communication protocol.

8BIT

Parity check (Simple communication protocol)

Sets parity check. [----] is displayed when the setting of serial protocol is not simple communication protocol.

NON

Stop bit length (Simple communication protocol)

Sets bit length. [----] is displayed when the setting of serial protocol is not simple communication protocol.

2BIT

Response delay time (Simple communication protocol)

Sets time to delay the response message of simple communication protocol. [----] is displayed when the setting of serial protocol is not simple communication protocol.

Communication range (Simple communication protocol)

Sets communication range of simple communication protocol. [----] is displayed when the setting of serial protocol is not simple communication protocol.

Page 59

HRX-OM-M091

Chapter 5 Simple communication protocol function

HRS Series 5.3 Setting and checking

5-5

5.3.2 Setting and checking

Communication mode Setting and checking

1. Press and hold the [MENU] key for 2 sec.

Repeat pressing the key until the setting screen for communication mode [

] appears

on the digital display.

2. Select “SER” from the table below with the [▲] key, and confirm with “SEL”.

Table 5.3-2 List of set values

Set values Explanation

Initial value

(Default setting)

Sets LOCAL mode

○

Set s DIO mode Sets SERIAL mode

∗

∗1：If the serial protocol is “Simple communication protocol 2” and the contact input 1 is

“external switch signal” or contact input 2 is “remote signal”, “SERIAL mode” cannot be set.

Serial protocol Setting and checking

3. Press the [SEL] key once.

The set screen of serial protocol is displayed on the digital display.

［MENU］

Press and

hold

［MENU］

Press and

hold

［MENU］

Press and

hold

［MENU］

Press and

hold

Page 60

HRX-OM-M091

Chapter 5 Simple communication protocol function

5.3 Setting and checking HRS Series

5-6

4. Select serial protocol from the table below with [▲] key or [▼] key, and confirm by pressing

“SEL”.

Table 5.3-3 List of set values

Set values Explanation

Initial value

(Default setting)

MODBUS protocol

○

Simple communication protocol Simple communication protocol 2

∗2,∗

∗2 ： When the setting of the contact input 2 is “Remote signal”, “Simplified

communication protocol 2” cannot be set.

∗3：Refer to chapter 2.4 for remote setting when the communication mode is SERIAL and the

simple communication protocol 2 is selected as the serial protocol.

Communication specification Setting and checking

5. Press the [SEL] key once.

The set screen of communication specification is displayed on the digital display.

6. Select communication specification from the table below with [▲] key or [▼] key, and

confirm by pressing “SEL”.

Table 5.3-4 List of set values

Set values Explanation

Initial value

(Default setting)

RS-232C Standard RS-485 Standard

○

RS-485 terminal Setting and checking

7. Press the [SEL] key once.

The set screen of RS-485 terminal is displayed on the digital display.

8. Select RS-485 terminal from the table below with [▲] key or [▼] key, and confirm by

pressing “SEL”.

Table 5.3-5 List of set values

Set values Explanation

Initial value

(Default setting)

Without terminal

○

With terminal

Page 61

HRX-OM-M091

Chapter 5 Simple communication protocol function

HRS Series 5.3 Setting and checking

5-7

Slave addresses（simple communication protocol） Setting and checking

9. Press the [SEL] key 3 times.

The set screen of slave addresses (simple communication protocol) is displayed on the digital display.

10. Select slave addresses (simple communication protocol) from the table below with [▲] key

or [▼] key, and confirm by pressing “SEL”.

Table 5.3-6 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the serial protocol setting is simple communication protocol.

Sets of slave addresses for simple communication protocol. Set range is 1 to 99.

Communication speed (simple communication protocol) Setting and checking

11. Press the [SEL] key once.

The set screen of communication speed (simple communication protocol) is displayed on the digital display.

12. Select communication speed (simple communication protocol) from the table below with

[▲] key or [▼] key, and confirm by pressing “SEL”.

Table 5.3-7 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the serial protocol setting is simple communication protocol.

1200bps 2400bps 4800bps 9600bps

○

19200bps

Page 62

HRX-OM-M091

Chapter 5 Simple communication protocol function

5.3 Setting and checking HRS Series

5-8

BCC（simple communication protocol） Setting and checking

13. Press the [SEL] key once.

The set screen of BCC (simple communication protocol) is displayed on the digital display.

14. Select BCC (simple communication protocol) from the table below with [▲] key or [▼] key,

and confirm by pressing “SEL”.

Table 5.3-8 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the serial protocol setting is simple communication protocol. Without BCC

With BCC

○

Data length (simple communication protocol) Setting and checking

15. Press the [SEL] key once.

The set screen of data length (simple communication protocol) is displayed on the digital display.

16. Select data length (simple communication protocol) from the table below with [▲] key or

[▼] key, and confirm by pressing “SEL”.

Table 5.3-9 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the serial protocol setting is simple communication protocol.

7 bit 8 bit

○

Page 63

HRX-OM-M091

Chapter 5 Simple communication protocol function

HRS Series 5.3 Setting and checking

5-9

Parity check (simple communication protocol) Setting and checking

17. Press the [SEL] key once.

The set screen of parity check (simple communication protocol) is displayed on the digital display.

18. Select parity check (simple communication protocol) from the table below with [▲] key or

[▼] key, and confirm by pressing “SEL”.

Table 5.3-10 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the serial protocol setting is simple communication protocol.

None

○

Odd number

Even number

Stop bit（simple communication protocol） Setting and checking

19. Press the [SEL] key once.

The set screen of stop bit (simple Communication protocol) is displayed on the digital display.

20. Select stop bit (simple communication protocol) from the table below with [▲] key or [▼]

key, and confirm by pressing “SEL”.

Table 5.3-11 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the serial protocol setting is simple communication protocol. 1 bit

2 bit

○

Page 64

HRX-OM-M091

Chapter 5 Simple communication protocol function

5.3 Setting and checking HRS Series

5-10

Response delay time (simple communication protocol) Setting and checking

21. Press the [SEL] key once.

The set screen of response delay time (simple communication protocol) is displayed on the digital display.

22. Select response delay time (simple communication protocol) from the table below with [▲]

key or [▼] key, and confirm by pressing “SEL”.

Table 5.3-12 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the serial protocol setting is simple communication protocol.

Sets of response delay time Set range is 0 to 250m sec.

Communication range (simple communication protocol) Setting and checking

23. Press the [SEL] key once.

The set screen of communication range (simple communication protocol) is displayed on the digital display.

24. Select communication range (simple communication protocol) from the table below with [▲]

key or [▼] key, and confirm by pressing “SEL”.

Table 5.3-13 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available unless the serial protocol setting is simple communication protocol. Only reading is available

Reading and writing are available

○

Page 65

HRX-OM-M091

Chapter 5 Simple communication protocol function

HRS Series 5.4 Communication sequence

5-11

5.4 Communication sequence

Starts with a request message from the customer’s system (host), and finishes with a response message from the product (slave). This product operates as a slave. It does not send any requests.

●Positive response Based on the request message, reads/writes return a positive response.

●Negative response

Returns a negative message when the

received request message is not normal.

Refer to “5.9 Negative response’’.

●No response No response is returned when the slave address is specified or a command which is not supported is received.

Your system

（Master）

This product

（Slave）

No response

0 to 250ms （Response delay time）

（

）

（

）

10 to 200ms

Page 66

HRX-OM-M091

Chapter 5 Simple communication protocol function

5.5 Message configuration HRS Series

5-12

5.5 Message configuration

The message configuration is shown in the following. The explanation of data in message is shown in the Table 5.5-1.

This product communicates in ASCII mode. ASCII mode is used from STX to ETX. Hexadecimal value is used for BCC.

5.5.1 Message format

1) Request message format 1-1) Request message (Request to read)

STX Slave Address Request Command ETX BCC

[STX]

XX XX

[R]

XX XX XX

[ETX]

1-2) Request message (Request to write)

STX Slave Address Request Command Writing data ETX BCC

[STX]

XX XX

[W]

XX XX XX XX XX XX XX XX

[ETX]

1-3) Request message (Request to store the data）

STX Slave Address Request Command ETX BCC

[STX]

XX XX

[W]

XX XX XX

[ETX]

2) Response message format 2-1) Response message (Normal response to request to write)

STX Slave Address ACK Command Reading data ETX BCC

[STX]

XX XX

[ACK]

XX XX XX XX XX XX XX XX

[ETX]

2-2) Response message (Normal response to request to write or store the data)

STX Slave Address ACK ETX BCC

[STX]

XX XX

[ACK] [ETX]

2-3) Response message (Response when a receiving error occurred)

STX Slave Address NAK ETX BCC

[STX]

XX XX

[NAK]

[ETX]

Response is not returned unless STX and ETX (BCC) are included in the request. This product clears all previously received code when STX is received.

Exception code

Page 67

HRX-OM-M091

Chapter 5 Simple communication protocol function

HRS Series 5.5 Message configuration

5-13

Table 5.5-1 Format data

NO Item Explanation

1 STX(02h)

Start text The code to specify the head of the message. Added to the head of the characters to be sent.

2 ETX(03h)

End text The code to specify the end of the message. Added to the end of the characters to be sent. Other than BCC.

Slave

Address

Slave address which is set to each product. Can be changed by setting.

The address to identify the device. 4 Request Request identifier. R (reading) or W (writing) 5 Command Command to reading or writing.

Writing

Reading

To request writing, write the data in this area to the object data.

To request reading, set the object data in this area.

7 BCC

EXOR algorithm of all characters from STX to ETX is read with the check code for

error detection.

This code (BCC) is not included in “response” if BCC check is not selected when

setting the communication.

8 ACK(06h)

Acknowledge code.

This is included in the response from the product when there is no error in the

received request.

9 NAK(15h)

Negative acknowledge code.

This is included in the response from the product when there is an error in the

received request.

Exception

code

Error content is included in the response when there is an error in the received

request. Refer to the table below for exception codes.

Exception code

Exception

Equipment malfunction Memory error

Out of set range Value data is out of “set range specified independently by set parameter”

Setting not allowed. Changing of requested communication parameter is prohibited. Or communication parameter to read does not exist. Writing of the communication mode is requested while the communication mode change is set to RO (read only) Writing to PV (measured value) is requested.

Abnormal code ASCII code other than numerical data is requested (specified) to the location for numerical data. ASCII code other than “0” or”-” is requested (specified) to the

location for symbol. 4 Format error 5 BCC error 6 Overrun error 7 Fleming error 8 Parity error

∗1：Exception code “0” is included in the response regardless of the presence of the

request error because memory error is present.

∗2：The exception with the highest number is included in the response when two or

more errors have occurred.

Page 68

HRX-OM-M091

Chapter 5 Simple communication protocol function

5.5 Message configuration HRS Series

5-14

The communication example is expressed in hexadecimal value with [ ]. The actual communication is performed with ASCII code. Refer to the request / response message in this section.

5.5.2 Message example

The example shows communication with the conditions below.

○Slave Address：No.1 ○Read seven consecutive data from register 0000h.

(Read circulating fluid discharge temperature.)

 Communication example

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address

R Request message to read [ACK] Normal response message

PV1 Circulating fluid discharge temperature PV1 Circulating fluid discharge temperature

[65h] BCC value 00187 Read information

[0Fh] BCC value

 Request message (Master to Slave)

STX

Slave

Address

Request Command ETX BCC

02 30 31 52 50 56 31 03 65

 Response message (Slave to Master)

STX

Slave

Address

ACK Command Reading data ETX BCC

02 30 31 06 50 56 31 30 30 31 38 37 03 0F

This product

(Request): [STX] 01RPV1 [ETX] [65h]

(Response): [STX] 01[ACK] PV100187 [ETX] [0Fh]

Your system

Data is sent and received in ASCII code.

Page 69

HRX-OM-M091

Chapter 5 Simple communication protocol function

HRS Series 5.6 BCC

5-15

5.6 BCC

EXOR algorithm of all characters from STX to ETX is read with the check code for error detection.

This BCC is not included in “response” if BCC check is not selected when setting the communication.

Displayed in one digit of ASCII code in the message frame.

 Calculation example

●Message for BCC

[STX] 01RPV1 [ETX]

●Calculation

ASCII HEX

[STX] 02

‘0’ 30

‘1’ 31 ‘R’ 52 ‘P’ 50 ‘V’ 56

‘1’ 31

[ETX] 03

‘e’ 65

←Code for EXOR from STX to ETX is BCC.

●Sending message

[STX] 01RPV1 [ETX] e

5.7 Command

Table 5.7-1 shows the commands which are supported by the product. No response is returned for a request message of a command which is not in

Table 5.7-1.

Table 5.7-1 Command list

NO Command Name R/W Explanation

1 PV1

Circulating fluid discharge temperature

Read the circulating fluid discharge temperature in the temperature unit of the product. The circulating fluid discharge temperature (offset temperature if offset setting is selected) which is displayed on the operation display panel PV part. e.g. In case of 19.8

00198

2 SV1

Circulating fluid set temperature

R/W

Write/read the circulating fluid set temperature in the temperature unit of the product. Writing is available only in serial mode. e.g. In case of 35.8

00358

3 LOC Key-lock setting R/W

Write and read the key-lock setting. 00000：Unlocked 00001：All locked 00002：Setting mode value is locked 00003：Key lock other than for set temp. Key-lock setting of this product just receives the command. This command does not actually lock the keys. This function is to make this product interchangeable with the communication specifications of SMC’s HRG/HRGC series thermo coolers. When not using this product as a replacement for HRG/HRGC, this function is not needed.

4 STR Store the data W Store the data to the product (Write to FRAM)

Page 70

HRX-OM-M091

Chapter 5 Simple communication protocol function

5.8 Command explanation HRS Series

5-16

5.8 Command explanation

5.8.1 Command:PV1 Circulating fluid discharge temperature

Read the circulating fluid discharge temperature in the selected temperature unit (°C or °F). The circulating fluid discharge temperature (offset temperature if offset setting is selected) which is displayed on the operation display panel PV part.

 Request message <Normal> (Master to Slave)

STX Slave Address Request Command ETX BCC

[STX]

XX XX

[R] [P] [V] [1] [ETX]

 Response message <Normal> (Slave to Master)

STX Slave Address ACK Command Reading data ETX BCC

[STX]

XX XX

[ACK] [P] [V] [1]

XX XX XX XX XX

[ETX]

 Communication example

○Slave Address：No 1

○BCC selection

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address R Request message to read [ACK] Normal response message PV1 Circulating fluid discharge temperature PV1 Circulating fluid discharge temperature [65h] BCC value 00187 Read information (18.7oC) [0Fh] BCC value

This product

(Request) [STX] 01RPV1 [ETX] [65h]

(Response) [STX] 01[ACK] PV100187 [ETX] [0Fh]

Your system

Data is sent and received in ASCII code.

Page 71

HRX-OM-M091

Chapter 5 Simple communication protocol function

HRS Series 5.8 Command explanation

5-17

5.8.2 Command:SV1 Circulating fluid set temperature (R)

Read the circulating fluid set temperature in the selected temperature unit (°C or °F).

 Request message <Normal> (Master to Slave)

STX Slave Address Request Command ETX BCC

[STX]

XX XX

[R] [S] [V] [1] [ETX]

 Response message <Normal> (Slave to Master)

STX Slave Address ACK Command Reading data ETX BCC

[STX]

XX XX

[ACK] [S] [V] [1]

XX XX XX XX XX

[ETX]

 Communication example

○Slave Address：No 1

○BCC selection

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address R Request message to read [ACK] Normal response message SV1 Circulating fluid set temperature SV1 Circulating fluid set temperature [66h] BCC value 00258 Read information (25.8oC) [0Dh] BCC value

Your system This product

(Request) [STX] 01RSV1 [ETX] [66h]

(Response) [STX] 01[ACK] SV100258 [ETX] [0Dh]

Data is sent and received in ASCII code.

Page 72

HRX-OM-M091

Chapter 5 Simple communication protocol function

5.8 Command explanation HRS Series

5-18

5.8.3 Command:SV1 Circulating fluid set temperature (W)

Read the circulating fluid set temperature in the selected temperature unit (°C or °F).

 Request message <Normal> (Master to Slave)

STX Slave Address Request Command Writing data ETX BCC

[STX]

XX XX

[W] [S] [V] [1]

XX XX XX XX XX

[ETX]

 Response message <Normal> (Slave to Master)

STX Slave Address ACK ETX BCC

[STX]

XX XX

[ACK] [ETX]

 Communication example

○Slave Address：No 1

○BCC selection

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address W Request message to write [ACK] Normal response message SV1 Circulating fluid set temperature [06h] BCC value 00258 Write information (25.8 oC) [5Ch] BCC value

Your system This product

(Request)[STX] 01WSV100258 [ETX] [5Ch]

(Response)[STX] 01[ACK] [ETX] [06h]

Data is sent and received in ASCII code.

Page 73

HRX-OM-M091

Chapter 5 Simple communication protocol function

HRS Series 5.8 Command explanation

5-19

5.8.4 Command:LOC Key-lock setting (R)

Read the key-lock condition set in 5.8.5 ‘’Command: LOC’’.

It is different from the key-lock information which is set by the operation display panel.

 Request message <Normal> (Master to Slave)

STX Slave Address Request Command ETX BCC

[STX]

XX XX

[R] [L] [O] [C] [ETX]

 Response message <Normal> (Slave to Master)

STX Slave Address ACK Command Reading data ETX BCC

[STX]

XX XX

[ACK] [L] [O] [C]

XX XX XX XX XX

[ETX]

 Communication example

○Slave Address：No 1

○BCC selection

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address R Request message to read [ACK] Normal response message LOC Key-lock setting LOC Key-lock setting [12h] BCC value 00001

Read information（00001：All locked）

[77h] BCC value

This product

(Request)［STX］01RLOC[ETX][12h]

(Response)［STX］01［ACK]LOC00001[ETX][77h]

Your system

Data is sent and received in ASCII code.

Page 74

HRX-OM-M091

Chapter 5 Simple communication protocol function

5.8 Command explanation HRS Series

5-20

5.8.5 Command:LOC Key-lock setting (W)

Sets key-lock of this product. This setting is different from the key-lock information which is set by the operation display panel.

Key-lock setting of this product just receives the command. This command does not actually lock the keys.

This function is to make this product interchangeable with the communication specifications of SMC’s HRG/HRGC series thermo coolers. When not using this product as a replacement for HRG/HRGC, this function is not needed.

 Request message <Normal> (Master to Slave)

STX Slave Address Request Command Writing data ETX BCC

[STX]

XX XX

[W] [L] [O] [C]

XX XX XX XX XX

[ETX]

 Response message <Normal> (Slave to Master)

STX Slave Address ACK ETX BCC

[STX]

XX XX

[ACK] [ETX]

 Communication example

○Slave Address：No 1

○BCC selection

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address W Request message to write [ACK] Normal response message LOC Key-lock setting [06h] BCC value

00001

Read information（00001：All locked）

[26h] BCC value

Your system This product

(Request)[STX] 01WLOC00001 [ETX] [26h]

(Response)[STX] 01[ACK] [ETX] [06h]

Data is sent and received in ASCII code.

Page 75

HRX-OM-M091

Chapter 5 Simple communication protocol function

HRS Series 5.8 Command explanation

5-21

5.8.6 Command:STR Saves data (W)

Store the circulating fluid set temperature set in 5.8.3 ‘’Command:SV1 Circulating fluid set temperature’’. Key-lock set data which is set in 5.8.5 ‘’Command:LOC Key-lock setting (W)’’ is not the object to store.

 Request message <Normal> (Master to Slave)

STX Slave Address Request Command ETX BCC

[STX]

XX XX

[W] [S] [T] [R] [ETX]

 Response message <Normal> (Slave to Master)

STX Slave Address ACK ETX BCC

[STX]

XX XX

[ACK] [ETX]

 Communication example

○Slave Address：No 1

○BCC selection

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address W Request message to write [ACK] Normal response message STR Saves data [06h] BCC value [02h] BCC value

Your system This product

(Response)［STX］01［ACK][ETX][06h]

(Request)［STX］01WSTR[ETX][02h]

Data is sent and received in ASCII code.

Page 76

HRX-OM-M091

Chapter 5 Simple communication protocol function

5.9 Negative response HRS Series

5-22

5.9 Negative response

If the request is not normal when receiving the request, or the request cannot be received due to the state of the product, a negative response is returned. Refer to the exception codes in Table 5.5-1 for exceptions.

 Response message <Normal> (Slave to Master)

STX Slave Address NAK ETX BCC

[STX]

XX XX

[NAK]

[ETX]

 Communication example

○Slave Address：No 1

○Writing of the circulating fluid set temperature when the communication

range setting is RO (read only).

Request message Response message

Code Contents Code Contents

01 Slave Address 01 Slave Address W Request message to write [NAK] Negative response message SV1 Circulating fluid set temperature 2 Exception code for setting is prohibited 00258 Write information (15.1 oC) [39h] BCC value [5Ch] BCC value

Exception code

Your system This product

(Request)［STX］01WSV100258[ETX][5Ch]

(Response)［STX］01［NAK]2[ETX][39h]

Data is sent and received in ASCII code.

Page 77

HRX-OM-M091

Chapter 6 Communication alarm function

HRS Series 6.1 Communication alarm occurs

6-1

Chapter 6 Communication alarm

function

Monitors whether the serial communication is sent/received properly between the product and the customer’s device. This feature is only valid when the communication mode is set to SERIAL mode.

Abnormal signals or disconnection of the communication cable can be notified immediately by setting the alarm function to match the interval at which messages are sent from the customer device. When the communication is restored, the alarm is automatically reset.

Do not use this function when the customer device does not send messages regularly.

The default setting of this function is “off”.

6.1 Communication alarm occurs

Fig 6.1-1 shows when an alarm occurs. Refer to 6.3 ‘’Setting and checking’’ for the setting method.

●Changing of communication error

Operation continues when an alarm occurs.

●Time for monitoring the communication error

180 sec

When the customer's device is sending messages every 60sec, if the communication cable is disconnected and no message is received for 180sec, the product generates AL19 communication error alarm to notify the error.

This productYour system

Write or read

60 sec.

Broken

wire

o r

coming

off

Passage of

180 sec.

Excess at no

communicatio

n monitoring

time.

AL19 Communication

error is generated.

Operation continues

Monitoring

time

Monitoring

time

Fig 6.1-1 Communication alarm example

Page 78

HRX-OM-M091

Chapter 6 Communication alarm function

6.2 Communication alarm reset HRS Series

6-2

6.2 Communication alarm reset

When AL19 communication error has been generated, the alarm is automatically reset when the disconnection of the communication cable is fixed, and the message from the customer is received. If operation is set to stop when a communication alarm occurs, restart the operation if necessary.

This productYour system

Write or read

60 sec.

Broken

wire

o r

coming

off

AL19 Communication

error is generated.

Monitoring

time

Monitoring

time

Normal

connection

Communication error automatic restoration

Write or read

60 sec.

：：

Fig 6.2-1 Communication alarm restoration example

6.3 Setting and checking

6.3.1 Setting and checking items

The table below explains the setting items of the communication alarm function and default values.

Table 6.3-1 Communication setting item

Display Item Contents

Initial value

(Default setting)

Changing of communication error

Set the operation when the alarm No. AL19 “Communication error” is generated.

OFF

The monitoring time of communication error

Set the alarm monitoring time when the alarm No. AL19 “Communication error” is generated. Alarm signal is generated when the monitoring time is exceeded. Setting unit is 1 sec. [----] is displayed when the communication error setting is OFF.

Page 79

HRX-OM-M091

Chapter 6 Communication alarm function

HRS Series 6.3 Setting and checking

6-3

6.3.2 Setting and checking

1. Press and hold the [MENU] key for 2 sec.

Repeat pressing the key until the setting screen for alarm buzzer sound [

] appears

on the digital display.

Changing of communication error Setting and checking

2. Display the screen of the communication error by pressing the [SEL] key 10 times.

The set screen of “changing of communication error” is displayed on the digital display.

3. Select changing of operation when communication error from the table below with [▲] key

or [▼] key, and confirm by pressing “SEL”.

Table 6.3-2 List of set values

Set values Explanation

Initial value

(Default setting)

This alarm signal is not detected.

○

Operation continues when this communication error is generated. Operation is stopped when this communication error is generated.

The monitoring time of communication error Setting and checking

4. Press the [SEL] key once.

The set screen of the “monitoring time of communication error” is displayed on the digital display.

［MENU］

Press

and hold

［MENU］

Press

and hold

［MENU］

Press

and hold

Page 80

HRX-OM-M091

Chapter 6 Communication alarm function

6.3 Setting and checking HRS Series

6-4

5. Select the monitoring time of communication error from the table below with [▲] key or [▼]

key, and confirm by pressing “SEL”.

Table 6.3-3 List of set values

Set values Explanation

Initial value

(Default setting)

Setting/checking are not available if the setting of the changing of communication error is OFF.

Sets monitoring time of communication error Setting range is 30 to 600 sec.

Page 81

Page 82

4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021 JAPAN Tel: + 81 3 5207 8249 Fax: +81 3 5298 5362 URL http://www.smcworld.com

Note: Specifications are subject to change without prior notice and any obligation on the part of the manufacturer.

SMC Networks HRS012-A, HRS050-A, HRS012-W, HRS018-W, HRS018-A Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual