SMC Networks HRLE Series User manual

HRX-OM-Z015
Operation Manual
Communication function
Thermo-chiller
HRLE Series
Keep this manual available whenever necessary
© 2021 SMC CORPORATIONAll Rights Reserved

To 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 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-Z015
Contents
HRLE Series
Contents
Chapter 1 Read before using............................................................1-1
1.1 OPERATION MODE AND OPERATION METHOD................................................................. 1-2
1.2 CHANGE OF OPERATION MODE..................................................................................... 1-3
1.3 COMMUNICATION TERMINAL BLOCK............................................................................. 1-4
1.4 OPERATION DISPLAY PANEL FLOW................................................................................ 1-5
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 CONTACT INPUT SIGNAL .............................................................................................. 2-5
2.3.1 Setting of contact input signal type and form.......................................................................2-5
2.3.2 Run/stop・Run・Stop・External switch signal.........................................................................2-6
2.3.3 External switch signal...........................................................................................................2-7
2.4 CONTACT OUTPUT SIGNAL ........................................................................................... 2-9
2.4.1 Contact output signal ...........................................................................................................2-9
Chapter 3 Serial communication......................................................3-1
3.1 PRECAUTIONS WIRING COMMUNICATION ....................................................................... 3-1
3.2 CONNECTED EXPLANATION.......................................................................................... 3-1
3.3 COMMUNICATION SPECIFICATION.................................................................................. 3-2
3.4 MODBUS COMMUNICATION FUNCTION......................................................................... 3-3
3.5 PRECAUTIONS FOR COMMUNICATION............................................................................ 3-4
3.5.1 Precautions after wiring and before communication............................................................3-4
3.5.2 Precautions for communicating............................................................................................3-4
3.6 SETTING METHOD........................................................................................................ 3-5
3.7 COMMUNICATION SEQUENCE ....................................................................................... 3-6
3.8 MESSAGE CONFIGURATION.......................................................................................... 3-7
3.8.1 Message frame ....................................................................................................................3-7
3.9 FUNCTION CODES ....................................................................................................... 3-9
3.10 CHECKSUM CALCULATION METHOD.............................................................................. 3-9
3.10.1 LRC(ASCII) ..........................................................................................................................3-9
3.10.2 CRC(RTU)..........................................................................................................................3-10
3.11 EXPLANATION OF FUNCTION CODES ........................................................................... 3-12
3.11.1 Function code：04 Reading multiple registers....................................................................3-12
3.11.2 Function code：16 Writing multiple registers ......................................................................3-14
3.12 NEGATIVE RESPONSE................................................................................................ 3-15
3.13 REGISTER MAP......................................................................................................... 3-17
3.13.1 Circulating fluid discharge temperature .............................................................................3-18
3.13.2 Circulating fluid discharge pressur.....................................................................................3-18
3.13.3 Status flag ..........................................................................................................................3-18

HRX-OM-Z015
Contents
HRLE Series
3.13.4 Alarm flag...........................................................................................................................3-19
3.13.5 Data display.......................................................................................................................3-21
3.13.6 Circulating fluid set temperature........................................................................................3-21
3.13.7 Operation instruction .........................................................................................................3-22
3.13.8 Data instruction..................................................................................................................3-23
Chapter 4 Communication alarm function ...................................... 4-1
4.1 COMMUNICATION ALARM OCCURS.................................................................................4-1
4.2 COMMUNICATION ALARM RESET ...................................................................................4-2
4.3 SETTING METHOD ........................................................................................................4-2

HRX-OM-Z015
Chapter 1 Read before using
HRLE Series 1.1 Operation mode and operation method
1-1
Chapter 1 Read before using
The communication of this product consists of contact input/output
communication and serial communication.
The serial communication protocol is a MODBUS.
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) enables remote
control of run/start of the product, temperature setting,
and details of product condition and alarm condition can
be obtained.
●If using contact input/output communication, refer to
chapter 2.
●If using serial communication , refer to chapter 3.

HRX-OM-Z015
Chapter 1 Read before using
1.1 Operation mode and operation method HRLE Series
1-2
1.1 Operation mode and operation method
LOCAL, DIO and SERIAL are available as the operation modes. Table
1.1-1 explains the operation modes. The default setting is LOCAL.
The operation method depends on the operation mode. Table 1.1-2
shows how the operation mode and method of operation are related.
Table 1.1-1 Operation modes.
Operation
mode
Description
Contents
Display
LOCAL
Run / stop and circulating
fluid temperature setting are
possible with the display panel.
Set the operation
mode to "LOCAL".
To display
the "LOC"
DIO
Run / stop by contact input.
Circulating fluid temperature
setting is done at the operation
display panel.
Set the operation
mode to "DIO".
To display
the "DIO"
SERIAL
Run / stop and circulating
fluid temperature setting are
possible with the serial
communication(RS-485)
Set the operation
mode to "SERIAL".
To display
the "SER"
Table 1.1-2 Operation mode and operation
Operation mode
Operation
LOCAL
DIO
SERIAL
Operation display panel
Run/Stop
○
×
×
Operation display panel
Circulating fluid
temperature setting
○
○
×
Operation display panel
Settings other than
circulating fluid
temperature setting
○
○
○
Touch panel
Condition reading
○
○
○
Contact input/output
communication
Run/Stop
×
○
×
Contact input/output
communication
Condition reading
○
○1
○
Reading of the external switch
○
○
○
Serial communication
Run/Stop
×
×
○
Serial communication
Circulating fluid
temperature setting
×
×
○
Serial communication
Condition reading
○
○
○
1 Only one external switch can be connected

HRX-OM-Z015
Chapter 1 Read before using
HRLE Series 1.2 Change of operation mode
1-3
1.2 Change of operation mode
There are the following methods to change the operation mode.
・Change by operation display panel
・Change by mode request
■About mode request
The mode request, is the ability to change the operation mode by the
serial communication.
When switching from 0 to 1, the mode request becomes effective and
the operation mode changes.
Table 1.2-1 Operation mode change by mode request
Operation mode
Operation mode change method
LOCAL
None.
DIO
None.
SERIAL
The mode request flag is turned from 0 to 1 by serial
communication.
Fig. 1-1 Opreration mode
Fig.1-2 Mode switching by the mode request (ON state mixed)
LOCAL DIO SERIAL LOCAL
Contact input 3
Mode request signal
Serial communication
Mode request flag
Select the LOCAL in the touch panel
Operation
mode
LOCAL DIO SERIAL DIO SERIAL
Contact input 3
Mode request signal
Serial communication
Mode request flag
Operation
mode
Select the LOCAL fot the operation display panel

HRX-OM-Z015
Chapter 1 Read before using
1.3 Communication Terminal Block HRLE Series
1-4
1.3 Communication Terminal Block
The communication terminal block In the lower left of the electrical
component box is used for communication.
Fig.1-3 shows the location of the communication terminal block.
Fig.1-3 Communication port
Terminal block M4

HRX-OM-Z015
Chapter 1 Read before using
HRLE Series 1.4 Operation display panel flow
1-5
1.4 Operation display panel flow
Fig.1-4 Communication setting operation panel flow

HRX-OM-Z015
Chapter 1 Read before using
1.4 Operation display panel flow HRLE Series
1-6
Fig.1-5 Communication setting operation panel flow

HRX-OM-Z015
Chapter 2 Contact input/output communication
HRLE Series 2.1 Precautions for communication
2-1
Chapter 2 Contact input/output
communication
The product 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 product 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. The contact input / output signals that this product is
equipped with are shown in Table 2-1.
Table 2-1 Contact input / output signal
Signal
Signal content
Contact input
2pcs.
Contact input 1
・Operation / stop signal, Run signal,
Allowed input an external switch signal
・Selectable signal configuration (Alternate/Momentary)
・Selectable contact type (normally open / normally closed)
Contact input 2
・Stop signal, Allowed input an external switch signal, Power saving mode
・Selectable signal configuration (Alternate/Momentary)
・Selectable contact type (normally open / normally closed)
Contact output
3pcs.
Contact output1
・Selectable signal content(Refer to “2.4 Contact output signal)
・Selectable contact type (normally open / normally closed)
Contact output2
Contact output3
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 according to
“3.2 Connected explanation”.In order to avoid malfunction, do not
connect to any place other than those shown in “3.2 Connected
explanation”.
○Power supply
To use the power of the product, the total load current must be 200mA
or less.
2.1.2 Precautions after wiring and before communication
○Check or set the Operation mode by the operation display panel.
・Operation mode shall be DIO.
You can read also in the other mode, but you can not run / stop if it
is not DIO mode.

HRX-OM-Z015
Chapter 2 Contact input/output communication
2.2 Communication specification HRLE Series
2-2
2.2 Communication specification
Table 2.2-1 Contact input/output communication connector
Connector specification (this product side)
M4 terminal block
Table 2.2-2 Contact input/output communication specification
Item
Specification
Contact
input
signal1,2
Insulation system
Photo coupler
・Run/Stop signal
・External switch signal
・Power saving mode
etc
Rated input voltage
DC24V
Operating voltage
range
DC21.6V to 26.4V
Rated input
current
5mA TYP
Input impedance
4.7kΩ
Contact output
signal
1,2,3
Rated load voltage
AC48V or less /
DC30V or less
・Signal of operating status
・Alarm signal
・TEMP READY signal
etc
Maximum load
current
AC/DC
500mA or less 1
Minimum load current
DC5V 10mA
Maximum output
current
10mA
Maximum accuracy
±1.0%F.S. or less
DC24V output voltage
DC24V±10% 200mA MAX 1
(It can not be used for inductive load.)
1 : The total load current must be 500 mAor less. To use the power of the product, the total load current
must be 200 mA or less.

HRX-OM-Z015
Chapter 2 Contact input/output communication
HRLE Series 2.2 Communication specification
2-3
Table 2.2-3 Contact input/output communication terminal number
PIN No.
Application
Division
Initial value(Default setting)
1
COM of contact input signal
Input
-
2
Contact input signal 1
Input
START/STOP signal(N.O type) *1
3
Contact input signal 2
Input
External switch signal(N.O type) *1
4
None
-
-
5
RS-485 communication
SD+
-
6
RS-485 communication
SD-
-
7
RS-485 communication
SG
-
8
None
-
-
9
Contact output signal 1
Output
Run status signal(N.O type) *1
10
COM of contact output signal 1
Output
-
11
Contact output signal 2
Output
Alarm signal(N.C type) *1
12
COM of contact output signal 2
Output
-
13
Contact output signal 3
Output
TEMP READY signal(N.O type) *1
14
COM of contact output signal 3
Output
-
15
DC24V output
Output
-
16
24COM output
Output
-
1 : It is possible to change the setting.

HRX-OM-Z015
Chapter 2 Contact input/output communication
2.2 Communication specification HRLE Series
2-4
4.7kΩ
1kΩ
4.7kΩ
1kΩ
Internal
circuit
DC24V
24COM
１
2
3
5
6
7
9
10
11
12
13
14
15
16
COM of contact input signal
Contact input signal 1:Start / Stop
(Factory default)
Contact input signal 2:External switch
(Factory default)
24COM
SD+
SD-
SG
Contact output signal 1:Run status
(Factory default)
COM of contact output signal 1
Product side Customer system side
RS-485 communication
Contact output signal 2:Alarm
(Factory default)
COM of contact output signal 2
Contact output signal 3:TEMP READY
(Factory default)
COM of contact output signal 3
DC24V output
24COM output
Fig.2-1 Circuit diagram

HRX-OM-Z015
Chapter 2 Contact input/output communication
HRLE Series 2.3 Contact input signal
2-5
2.3 Contact input signal
There are 2 contact input signals and can be customized by
the customer.
2.3.1 Setting of contact input signal type and form
The type of contact input signal can be set from the “1.4 Operation display panel
flow” (Refer to Communication menu).
Following items can be set for contact input signal 1 and 2:
・Contact type––selects “ N.O. ” (A contact) or “N.C.”(B contact)
・Signal form–––selects “ALT”(alternate) or “MT”(momentary)
・Signal type–––selects “OFF” (disabled), “SW” (external switch
signal) or “RN.ST” (run/stop) signal, “RUN”(run) signal,
“STOP (stop) signal, “ECO”(power saving mode) signal.
・Alarm select––– selects “OFF” (disabled),or“FLT” (Operation stop),
or “WRN” (Continuing operation) when an alarm occurs
by the contact input signal.
・Delay time–––selects 0 to 300s
・OFF detection time–––selects 0 to 10s
Table 2.3-1 Setting of contact input signal form
Type
Display
Item
Setting
Contact
input 1
Upper line
SEL
INP.1
Signal type
OFF:Disabled, RN.ST:Run/Stop signal、
RUN：Run signal, SW：External switch signal
Lower line(Initial value)
RN.ST
Upper line
TYPE
INP.1
Signal form
ALT：Alternate
MT：Momentary
Lower line(Initial value)
ALT
Upper line
CON
INP.1
Contact type
A：A contact(Normally open)
B：B contact(Normally close)
Lower line(Initial value)
A
Upper line
ALM
INP.1
Alarm type
OFF:Disabled, FLT:Operation stop,
WRN:Operation continue
Lower line(Initial value)
OFF
Upper line
DELY
INP.1
Delay time
0 to 300s
Lower line(Initial value)
0
Upper line
OVER
INP.1
Off detect time
0 to 10s
Lower line(Initial value)
0
Contact
input 2
Upper line
SEL
INP.2
Signal type
OFF:Disabled, STOP：Stop signal,
SW：External switch signal, ECO：Energy saving mode
Lower line(Initial value)
SW
Upper line
TYPE
INP.2
Signal form
ALT：Alternate
MT：Momentary
Lower line(Initial value)
ALT
Upper line
CON
INP.2
Contact type
A：A contact(Normally open)
B：B contact(Normally close)
Lower line(Initial value)
A
Upper line
ALM
INP.2
Alarm type
OFF:Disabled, FLT:Operation stop,
WRN:Operation continue
Lower line(Initial value)
OFF
Upper line
DELY
INP.2
Delay time
0 to 300s
Lower line(Initial value)
0
Upper line
OVER
INP.2
Off detect time
0 to 10s
Lower line(Initial value)
0

HRX-OM-Z015
Chapter 2 Contact input/output communication
2.3 Contact input signal HRLE Series
2-6
2.3.2 Run/stop・Run・Stop・External switch signal
1) Run/stop signal (Signal type: Alternate)
The product keeps operating while the input signal from the customer is ON.
2) Run/stop signal (Signal type: Momentary)
The state changes when the input signal from the customer goes ON. This signal
operates while the product is stopped, and stops while the product is being operated.
3) Run signal (Signal type: Alternate) /Stop signal (Signal type：Alternate)
Digital input signal 1 is for Run signal（Signal type：Alternate）, digital input signal 2 is
for stop signal(Signal type: Alternate). Stop signal becomes valid when both signals are
turned ON.
(1) The product starts operation when the contact input signal 1 is turned ON.
(2) The product stops operation when the contact input signal 2 is turned ON.
(3) The product starts operation because the contact input signal 1 is turned ON
although the contact input signal 2 is OFF.
OFF
ON
Run
Stop
Product condition
Run/stop signal
（Alternate）
O
FF
ON
Run
Stop
Product condition
Run/stop signal
(Momentary)
O
FF
ON
Run
Stop
Product condition
Run signal
O
FF
ON
Stop signal
②
①
③

HRX-OM-Z015
Chapter 2 Contact input/output communication
HRLE Series 2.3 Contact input signal
2-7
4) Contact input signal 1 is for Run/Stop signal (Signal type: Alternate), contact input signal
2 is for external switch signal (Signal type: Alternate).Refer to Chapter 2.3.3 for details of
the external switch.
(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.C. type) after the time which has
been set for the [Delay] time.
(3) When the external switch signal has been turned off for the time set for
[Off Detection] time, it is recognized as OFF.
(4) Alarm [AL32:Contact input 2 signal detection] is generated. The operation of the
product stops.
(5) 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
is turned OFF.
2.3.3 External switch signal
The product has two contact inputs available to detect the contact input signal.
This allows reading and monitoring the contact signal from an external switch.
When inputting an external switch signal to the contact input, select “SW”
(external switch signal) for the type of contact input signal.(Refer to
“2.3.1 Setting of contact input signal type and form”)
If an input from an external switch is detected, it can be generated as an
alarm.Options to select “continuous monitoring” or “monitoring during
operation” are available. Also, the detection start time after the start of
operation and the detection end time can be set.
・If the signal of “contact input 1” is detected: the alarm “AL30: Detection
of contact input 1 signal” is activated.
・If the signal of “contact input 2” is detected: the alarm “AL31: Detection
of contact input 2 signal” is activated.
・“Delay” time: sets the start time to detect the contact input signal after
the start of operation.
・“Off detect” time: sets the time between the detection of the contact input
OFF signal and the activation of the alarm.
Table 2.3-2 Monitoring method for contact input signal
“Delay” time
Monitoring method
0sec
Continuous monitoring
1 to 300sec
Monitoring during operation
O
FF
ON
Run
Stop
Product condition
O
FF
ON
External switch signal
[Off Detection] time
③
④
①
②
Run/Stop signal
[Delay] time

HRX-OM-Z015
Chapter 2 Contact input/output communication
2.3 Contact input signal HRLE Series
2-8
Contact input signal 1 is for external switch signal (Signal type: Alternate).
Run status of this product
Run
Stop
External switch
ON
OFF
Operation start
Signal reading
start
"Delay" time "Off Detect" time
Alarm
generation
Operation
stops due to
the alarm.
You can select the operation of this product when an alarm occurs by the
contact input signal.
・[WRN]–––Continue operation of the product when an alarm occurs
・[FLT]–––Stop operation of this product when an alarm occurs
“Delay” time and “off detect” time

HRX-OM-Z015
Chapter 2 Contact input/output communication
HRLE Series 2.4 Contact output signal
2-9
2.4 Contact output signal
There are 3 contact output signals and can be customized by the
customer.
2.4.1 Contact output signal
The setting of the contact output signal is done by the “1.4 Operation
display panel flow” (Communication menu).
Contact output signal is continuously output.
Table 2.4-1 Setting of contact output signal 1 to 3
Type
Display
Item
Setting
Contact
output 1
Upper line
SEL
OUT.1
Signal type
※Refer to Table 2.4-2
Lower line(Initial value)
RUN
Upper line
CON
OUT.1
Contact
type
A：A contact(Normally open)
B：B contact(Normally close)
Lower line(Initial value)
A
Upper line
ALM
OUT.1
Alarm
Alarm No.
Lower line(Initial value)
1
Contact
output 2
Upper line
SEL
OUT.2
Signal type
※Refer to Table 2.4-2
Lower line(Initial value)
ALM
Upper line
CON
OUT.2
Contact
type
A：A contact(Normally open)
B：B contact(Normally close)
Lower line(Initial value)
B
Upper line
ALM
OUT.2
Alarm
Alarm No.
Lower line(Initial value)
1
Contact
output 3
Upper line
SEL
OUT.3
Signal type
※Refer to Table 2.4-2
Lower line(Initial value)
RDY
Upper line
CON
OUT.3
Contact
type
A：A contact(Normally open)
B：B contact(Normally close)
Lower line(Initial value)
A
Upper line
ALM
OUT.3
Alarm
Alarm No.
Lower line(Initial value)
1

HRX-OM-Z015
Chapter 2 Contact input/output communication
2.4 Contact output signal HRLE Series
2-10
Table 2.4-2 Signal type for contact output signal
Signal type of contact output
Setting
Item
Contact
type
Contents
OFF
Disabled
A
Normally open
B
Normally open
RUN
Operation status signal
A
Operation：Close
B
Operation：Open
RMT
Remote mode signal
A
Remote mode：Close
B
Remote mode：Open
FLT
Operation stop “FLT”
alarm status signal
A
The time of “FLT” alarm：Close
B
The time of “FLT” alarm：Open
WRN
Continuing operation “WRN”
alarm status signal
A
The time of “WRN” alarm：Close
B
The time of “WRN” alarm：Open
ALM
Alarm status signal
A
The time of alarm：Close
B
The time of alarm：Open
RDY
TEMP READY signal
A
TEMP READY status：Close
B
TEMP READY status：Open
FREZ
Anti-freezing setting
status signal
A
Enabled：Close
B
Enabled：Open
SW1
Pass through signal of the
contact input signal 1
A
Output the input signal as it is
B
Reverse output of the input signal
SW2
Pass through signal of the
contact input signal 2
A
Output the input signal as it is
B
Reverse output of the input signal
A.SEL
Selected alarm status signal
A
Selected alarm occurrence : Close
B
Selected alarm occurrence : Open