SMC Networks HRSH Series User manual

No.HRX-OM-Q033-E
Operation Manual
Communication function
Thermo chiller
HRSH Series
Keep this manual available whenever necessary
© 2019 SMC CORPORATIONAll Rights Reserved

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.

HRX-OM-Q033
Contents
HRSH 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 input･Remote signal input....................................................................... 2-16
2.5.2 External switch signal input............................................................................................... 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

HRX-OM-Q033
Contents
HRSH 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 Circulating fluid discharge pressure ..................................................................................4-17
4.10.4 Circulating fluid electric conductivity..................................................................................4-17
4.10.5 Status flag..........................................................................................................................4-18
4.10.6 Alarm flag...........................................................................................................................4-19
4.10.7 Circulating fluid set temperature........................................................................................4-21
4.10.8 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
5.5.1Message 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

HRX-OM-Q033
Contents
HRSH Series
6.3.2 Setting and checking........................................................................................................... 6-3

HRX-OM-Q033
Chapter 1 Read before using
HRSH 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.
Serial
communication
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.
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.

HRX-OM-Q033
Chapter 1 Read before using
1.1 Communication mode and operation method HRSH 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.
DIO
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 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
LOCAL
DIO
SERIAL
DIO
LOCAL
DIO
REMOTE
MODBUS
Simple
communication
protocol pattern
1
2
Run/Stop control with operation display
panel
○
○
x
x
○
x
Circulating fluid discharge temperature
setting control with operation display panel
○
○
○
x
x
Except above with operation display panel
○
○
○
○
○
Condition reading with operation display
panel
○
○
○
○
○
Run/Stop operation by contact input/output
communication
x
x
○
x
x
○
Condition reading by contact input/output
communication
○
○
○
○
○
Reading of the external switch
○
○*1
○*1
○
○
○*1
Run/Stop operation by serial
communication.
x
x
x
○
x
Circulating fluid discharge temperature
setting control by serial communication.
x
x
x
○
○
Condition reading by serial communication.
○
○
○
○
○
1: Only one external switch can be installed.
Table 1.1-3 Communication mode and product functions
LOCAL
DIO
SERIAL
DIO
LOCAL
DIO
REMOTE
MODBUS
Simple
communication
protocol pattern
1
2
Run timer
○
○
x
x
○
x
Stop timer
○
○
x
x
○
x
Recovery from power cut
○
○
x
x
○
x
Anti-freezing
○
○
○
○
○
○
Pump accumulated operating time reset
○
○
x
x
○
x
Warming up function
○
○
○
○
○
○
Snow coverage protect function*2
○
○
○
○
○
○
2: This function cannot be set on the products of the cooling method ‘-W’.

HRX-OM-Q033
Chapter 1 Read before using
HRSH 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 Communication port shows the location of the communication port.
Fig 1.2-1 Communication port
Contact input/output(DIO)
Connector for communication
Used for DIO communication.
Serial communication
Connector
Used for
RS-485/RS-232C.
Connector for
option
Not used for
communication.

HRX-OM-Q033
Chapter 1 Read before using
1.3 Key operations HRSH Series
1-4
1.3 Key operations
Fig 1.3-1‘’Key operation (1/2)’’ and Fig 1.3-2 ‘’Key operation (1/2)’’ show the
operation of keys of the thermo-chiller. This manual explains the
“Communication setting menu”.
PV
SV
Circulating fluid
discharge
temperature
Circulating fluid
set temperature
Circulating
fluid discharge
pressure
Main display
Circulating
fluid
discharge
temperature
Circulating
fluid return
port
temperature
Check monitor
menu
Temperature
of the
compressor
inlet.
PV
SV
PV
SV
PV
SV
PV
SV
Circulating
fluid discharge
pressure
PV
SV
Pressure of
higher
pressure
refrigerant
circuit
PV
SV
Pressure of
lower
pressure
refrigerant
circuit
Accumulated
operation
time of the
pump
Accumulated
operation
time of the
fan*1
Accumulated
operation
time of the
compressor
Accumulated
operation
time
PV
SV
PV
SV
PV
SV
PV
SV
Key-lock
Run timer
Setting menu
Stop timer
READY mode
READY
band width
READY time
Offset mode
Offset
temperature
Recovery
from power
failure
Anti-freezing
function
Data reset
Pump
accumulated
operating
time reset
Fan
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）
PV
SV
PV
SV
PV
SV
Note) It changes only when the
alarm is generated.
PV
SV
PV
SV
Power supply ON
PV
SV
Press the
2 sec.
PV
SV
Circulating
fluid electric
conductivuty
PV
SV
SEL
Unused
PV
SV
PV
SV
Unused
Electric
conductivity
sensor setting
SEL
Electric
conductivity
control function
PV
SV
Target of
electric
conductivity
value
Electric
conductivity
control
hysteresis
PV
SV
PV
SV
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
MENU
MENU Press the
2 sec.
MENU
MENUMENU
Solenoid valve
operation mode
PV
SV
SEL
PV
SV
SEL
Accumulated
operation
time of the
dust-proof
filter
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
PV
SV
PV
SV
SEL
SEL
PV
SV
PV
SV
PV
SV
SEL
SEL
SEL
PV
SV
SEL
SEL
PV
SV
Chaging of
pump operation
mode
Circulating fluid
discharge
pressure
Pump operation
frequency
Warming up
function
Warming up
temperature
setting
Anti-snow
coverage
function *1
Dust-proof filter
accumlated
time reset *1
MENU
Press the
2 sec.
MENU
SEL
Criculating
fluid flow
rate
PV
SV
SEL
PV
SV
Unused
*1: [----] will be displayed on the SV displays in case of the products of the cooling method ‘-W’.
Fig 1.3-1 Key operation (1/2)

HRX-OM-Q033
Chapter 1 Read before using
HRSH Series 1.3 Key operations
1-5
MENU
Changing of
contact input
signal 1
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
communication
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
signal 2
detection
Unused
Unused
Changing of
DC line fuse
cut
Unused
PV
SV
PV
SV
Unused
Unused
PV
SV
PV
SV
PV
SV
SEL
SEL
SEL
SEL
Press the
2 sec.
MENU
Alarm setting
menu
MENU
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）
MENU
BCC
（Simple
communicatio
n protocol）
Data length
（Simple
communicati
on protocol）
Parity check
（Simple
communicati
on protocol）
Stop bit length
（Simple
communicatio
n protocol）
Contact input
signal 1
Contact
input signal
1 type
Contact input
signal 2
Contact input
signal 2 type
Contact output
signal 1
function
Contact output
signal 1
operation
Contact output
signal 1
selected alarm
Digital output
signal 2
function
Contact output
signal 3
selected alarm
Contact output
signal 2
operation
Contact output
signal 2
selected alarm
Contact output
signal 3
function
Contact output
signal 3
operation
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
SV
Press the
2 sec.
Contact input
signal 1 Delay
timer (time
delay) of
reading
Contact input
signal 1 OFF
detection
timer
PV
SV
PV
SV
Contact input
signal 2 Delay
timer (time
delay) of
reading
Contact input
signal 2 OFF
Detection
timer
PV
SV
PV
SV
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
PV
MENU
SEL
PV
SV
PV
SV
SEL
PV
SV
SEL
SEL
Temperature
alarm
monitoring
method
Monitoring
start timer
Range over
Detection timer
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
PV
SV
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
SEL
PV
SV
PV
SV
SEL
SEL
SV
SEL
SV
SEL
SV
SEL
SV
SEL
SV
Compressor
stop alarm
Changing of
circulating fluid
discharge
pressure
sensor error
Changing of
the pump
maintenance
Changing of
the fan
maintenance*1
Changing of
the compressor
maintenance
Changing of
the dust-proof
filter
maintenance*1
Changing of
recovery from
power failure
Communication
setting menu
SV
PV
Changing of
the monitoring
time for
maintenance of
dustproof
filter*1
SEL
SEL
*1: [----] will be displayed on the SV displays in case of the products of the cooling method ‘-W’.
Fig 1.3-2 Key operation (2/2)

HRX-OM-Q033
Chapter 1 Read before using
1.4 Parameters HRSH 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
Content
Default setting
Reference
page
Category
Communication mode
LOC
2.4
4.3
5.3
Communication
setting menu
Serial communication
Serial protocol
MDBS
4.3
5.3
Communication
specifications
485
4.3
5.3
RS-485 terminal
OFF
4.3
5.3
Mo
db
us
Slave address
1 (----)
4.3
Communication speed
19.2 (----)
Simple
communication
protocol
Slave address
---- (1)
5.3
Communication speed
---- (9.6)
BCC
---- (ON)
Data length
---- (8BIT)
Parity check
---- (NON)
Stop bit length
---- (2BIT)
Response delay time
---- (0)
Communication range
---- (RW)
Contact input/output communication
Contact input signal 1
RUN
2.4
Contact input signal 1 type
ALT (----)
Contact input signal 1 delay
timer (time delay) of reading
---- (0)
Contact input signal 1 OFF
detection timer
---- (0)
Contact input signal 2
OFF
Contact input signal 2 type
ALT (----)
Contact input signal 2 delay
timer (time delay) of reading
---- (0)
Contact input signal 2 OFF
detection timer
---- (0)
Contact output signal 1
function
RUN
Contact output signal 1
operation
A
Contact output signal 1
selected alarm
---- (AL.01)
Contact output signal 2
function
RMT
Contact output signal 2
operation
A
Contact output signal 2
selected alarm
---- (AL.01)
Contact output signal 3
function
ALM
Contact output signal 3
operation
B
Contact output signal 3
selected alarm
---- (AL.01)
1: Regarding the detail of the default setting, refer to each reference page.

HRX-OM-Q033
Chapter 2 Contact input/output communication
HRSH 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 signal（2pcs.）
Signal configuration（Alternate/Momentary）
Contact 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. 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.
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.

HRX-OM-Q033
Chapter 2 Contact input/output communication
2.2 Communication specification HRSH Series
2-2
2.2 Communication specification
Table 2.2-1 DIO Communication specification
Item
Specification
Connector type
M3 terminal block
Contact input
signal
Insulation method
Photo coupler
Rated input voltage
DC24V
Input voltage range
DC 21.6V to 26.4V
Rated input current
5mATYP
Input impedance
4.7kΩ
Contact output
signal
Rated load voltage
AC48V or less/DC30V or less
Maximum load current
AC/DC 500mA (Resistance load)
Minimum load current
DC5V 10mA
DC24V power supply output
DC24V±10％500mA MAX (No inductive load)
2.3 Terminal block explanation
This part explains the terminal block of the contact input/output
communication. The 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.
Table 2.3-1 Terminal explanation
Terminal
no
Application
Division
Default setting
Setting
available
13 to 15
24V COM output
Output
5 to 7
DC 24V output
Output
12
Common of contact input signal 2
Input
None
○
4
Contact input signal 2
11
Common of contact input signal 1
Input
Run/stop signal input
(Alternate)
○
3
Contact input signal 1
10
Common of contact output signal 3
Output
Alarm status signal output
(N.C type)
○
2
Contact output signal 3
9
Common of contact output signal 2
Output
Remote status signal output
(N.O type)
○
1
Contact output signal 2
8
Common of contact output signal 1
Output
Run status signal output
(N.O type)
○
0
Contact output signal 1

HRX-OM-Q033
Chapter 2 Contact input/output communication
HRSH Series 2.3 Terminal block explanation
2-3
4.7kΩ
Internal circuit
DC24V
24VCOM
1kΩ
4.7kΩ
1kΩ
---
0
8
1
9
2
10
3
11
4
12
13
14
15
7
5
6DC24V output
(500mA MAX)*2
24VCOM output
Contact output signal 3
Contact input signal 1
Contact output signal 1
Contact output signal 2
Contact input signal 2
Alarm status signal output
Run/stop signal input
Operation status signal output
Remote status signal output
Thermo-chiller side Cuctomer's equipment side
Signal description Default setting*1
*1 The pin numbers and output signals can be set by user. For details, refer to the [2.4 Setting and checking]
*2 When using with optional accessories, depending on the accessory, the allowable current of 24 VDC devices will be
reduced. Refer to the operation manual of the optional accessories for details.
Fig 2.3-1 Example of connector connection

HRX-OM-Q033
Chapter 2 Contact input/output communication
2.4 Setting and checking HRSH 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
Default setting
Communication mode
Sets communication mode of this product.
LOC
Contact input signal 1
Sets the function of contact input signal 1.
RUN
Contact input signal 1 type
Sets input type of contact input signal 1. [----] 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. Used when the setting of the contact input signal 1
is SW_Aor SW_B. [----] is displayed when the setting
of the contact input signal 1 is not SW_Aor SW_B.
---- (0)
Contact input signal 1 OFF
Detection timer
Sets the OFF detection timer of contact input signal
1. Used when the setting of the contact input signal 1
is SW_Aor SW_B. [----] is displayed when the setting
of the contact input signal 1 is not SW_Aor SW_B.
---- (0)
Contact input signal 2
Sets the function of contact input signal 2.
OFF
Contact input signal 2 type
Sets input type of contact input signal 2. [----] 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. 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.
---- (0)
Contact input signal 2 OFF
Detection timer
Sets the OFF detection timer of contact input signal
2. Used when the setting of the contact input signal 2
is SW_Aor SW_B. [----] is displayed when the setting
of the contact input signal 2 is not SW_A or SW_B.
---- (0)
Contact output signal 1
function
Sets output signal function of contact output 1.
RUN
Contact output signal 1
operation
Sets output signal operation of contact output 1.
A
Contact output signal 1
selected alarm
Sets alarm which is selected for contact output 1.
[----] is displayed when the setting of the output signal
of contact output1 is not selected alarm signal.
---- (AL.01)
Contact output signal 2
function
Sets output signal function of contact output 2.
RMT
Contact output signal 2
operation
Sets output signal operation of contact output 2.
A
Contact output signal 2
selected alarm
Sets alarm which is selected for contact output 2.
[----] is displayed when the setting of the output signal
of contact output2 is not selected alarm signal.
---- (AL.01)
Contact output signal 3
function
Sets output signal function of contact output 3.
ALM
Contact output signal 3
operation
Sets output signal operation of contact output 3.
B
Contact output signal 3
selected alarm
Sets alarm which is selected for contact output 3.
[----] is displayed when the setting of the output signal
of contact output3 is not selected alarm signal.
---- (AL.01)

HRX-OM-Q033
Chapter 2 Contact input/output communication
HRSH 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 thekey 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.1
Sets SERIAL mode. 2
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.
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［MENU］
Press and
hold
［MENU］
Press and
hold
［MENU］
Press and
hold
［MENU］
Press and
hold

HRX-OM-Q033
Chapter 2 Contact input/output communication
2.4 Setting and checking HRSH 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 signal input
Run/stop signal input
○
External switch signal input (N.O. type)1,2
External switch signal input (N.C. type)1,2
1：When the setting of the communication mode is “DIO mode”, “External switch signal
input” cannot be set.
2：When the setting of the communication mode is “SEIRAL mode” and the protocol
setting is “Simplified communication protocol 2”, “External switch signal input”
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1
1：Used when the setting of the contact input 1 is “Operation stop signal input”.
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HRX-OM-Q033
Chapter 2 Contact input/output communication
HRSH 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).
to
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).
to
Setting of contact input signal 1 OFF
detection timer
Set range is 0 to 10sec.
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HRX-OM-Q033
Chapter 2 Contact input/output communication
2.4 Setting and checking HRSH Series
2-8
Contact input signal 1 Setting and checking
11.Press the [SEL] key once.
The set screen of contact input signal 2is 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 signal input
○
Run/stop signal input
External switch signal input (N.O. type)
External switch signal input (N.C. type)
Remote signal input1
1：When the setting of the serial protocol is “Simplified communication protocol 2”,
“Remote signal input” 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1
1:Can be set when the setting of contact input signal 2 is "Run/Stop signal input" or "Remote
signal"
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