Condair Links Series Owner's manual

2584458-G EN 1902
Humidication and Evaporative Cooling
MODBUS
Addendum manual for installation and operation
for use with DL, ME, RS, EL and RO-A
devices as of software 5.8.x.x
Modbus

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Installation date (MM/DD/YYYY):
Commissioning date (MM/DD/YYYY):
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Proprietary Notice
This document and the information disclosed herein are proprietary data of Condair Group AG. Neither this document,
nor the information contained herein shall be reproduced, used, or disclosed to others without the written authori-
zation of Condair Group AG, except to the extent required for installation or maintenance of recipient's equipment.
Liability Notice
Condair Group AG does not accept any liability due to incorrect installation or operation of the equipment or due
to the use of parts/components/equipment that are not authorized by Condair Group AG.
Copyright Notice
© Condair Group AG, All rights reserved.
Technical modications reserved

3Contents
Contents
1 Introduction 5
1.1 Notes on this addendum manual 5
2 For your safety 6
3 Communication interface Integrated Controller 7
3.1 Technical data Modbus RTU 7
3.2 Technical data Modbus TCP 8
4 Modbus RTU 9
4.1 Before installation 9
4.2 Network structure Modbus RTU 9
4.3 Connection and conguration of the Integrated Controller for Modbus RTU 10
4.4 Determining the Modbus RTU interface parameters 11
5 Modbus TCP 13
5.1 Before installation 13
5.2 Network structure Modbus TCP 13
5.3 Determining the Modbus TCP interface parameters 14
5.3.1 Setting the network parameters (or IP parameters) 14
5.3.2 Setting the Modbus TCP interface parameters 15
6 Control signal settings 17
7 Notes on data register tables 18
7.1 Software version 1.1.x.x 18
7.2 Software version 4.x.x.x 18
7.3 Software version 5.x.x.x 18
7.4 Software version 5.3.x.x 18
7.5 Software version 5.7.x.x 19
7.6 Software version 5.8.x.x 19
8 Data register tables 20
8.1 Data register DL 20
8.2 Data register ME 22
8.3 Data register RS 25
8.4 Data register RO-A 29
8.5 Data register EL 30
9 Options 32
9.1 Galvanic Isolation Module 32
9.2 Mounting the "Isolation Module" option 32

4Contents
10 Test of the Modbus communication 33
10.1 Modbus RTU Test 33
10.2 Modbus TCP Test 34
10.3 Read out registers 35
10.4 Function 35
10.5 Number of registers 36
10.6 32-Bit Float Register 36
10.7 Test tool variety 36

5Introduction
1 Introduction
1.1 Notes on this addendum manual
This addendum manual is intended for use by engineers and properly trained technical personnel.
Please read this manual thoroughly before installing and conguring the Condair Integrated Controller
or a Modbus network.
If you have questions after reading this documentation, please contact your Condair representative.
They will be glad to assist you.
Symbols used in this manual
CAUTION!
The catchword "CAUTION" used in conjunction with the caution symbol in the circle designates notes
in this addendum manual that, if neglected, may cause damage and/or malfunction of the unit or
other material assets.
WARNING!
The catchword "WARNING" used in conjunction with the general caution symbol designates safety
and danger notes in this addendum manual that, if neglected, may cause to injury to persons.
DANGER!
The catchword "DANGER" used in conjunction with the general caution symbol designates safety and
danger notes in this addendum manual that, if neglected, may lead to severe injury or even death
of persons.
Safekeeping
Please safeguard this addendum manual in a safe place, where they can be immediately accessed. If the
equipment changes hands, the documentation must be passed on to the new operator.
If the documentation gets mislaid, please contact your Condair representative.
Language versions
This operation manual is available in various languages. Please contact your Condair representative
for information.

6For your safety
2 For your safety
General
Every person working with the Condair Integrated Controller must have read and understood this ad-
dendum manual, and the installation manual and operation manual of the Condair Integrated Controller,
before carrying out any work.
Knowing and understanding the contents of the manuals is a basic requirement for protecting the person-
nel against any kind of danger, to prevent faulty operation, and to operate the unit safely and correctly.
All icons, signs and markings applied to the unit must be observed and kept in readable state.
Qualication of personnel
All work described in this addendum manual may only be carried out by trained Condair service
technicians.
It is assumed that the service technicians working with the Condair Integrated Controller are familiar and
comply with the appropriate regulations on work safety and the prevention of accidents.
Danger that may arise from the Condair Integrated Controller
DANGER!
Danger of electric hazard!
The electrical compartment where the Integrated Controller is located may have live mains
voltage connected for other uses of the device. Live parts may be exposed when the control
unit is open. Touching live parts may cause severe injury or danger to life.
Prevention: Before commencing any work on the control unit disconnect the mains supply voltage
to the device via the electrical isolator in the mains supply line, and secure electrical isolator in "Off"
position against inadvertent switching on.
Safety reporting
All persons working with the Condair Integrated Controller are obliged to report any alterations to the
system that may affect safety to the owner without delay and to secure such systems against accidental
power-up.
Prohibited modications to the unit
No modications must be undertaken on the Condair Integrated Controller without the express written
consent of the manufacturer. For the replacement of defective components use exclusively original ac-
cessories and spare parts available from your Condair representative.

7Communication interface Integrated Controller
3 Communication interface Integrated Controller
3.1 Technical data Modbus RTU
Protocol Modbus RTU
Interface EIA-485 (RS485) (2-wire / GND)
Galvanic isolated No (Galvanic isolation optional possible, see chapter 9)
Connection Plug-in screw terminal 3-pole:
Data + / Data - / GND
Telegram format 1 Start / 8 Data / 1 Parity / 1 Stop
Data check CRC according to Modbus RTU specication
Modbus address 1 – 247 (10)
Parity None, even, odd
Baud rate 9600, 19200, 38400, 57600, 115200
Control signal timeout 0-300s (300s)
Max. number of devices 32 (according to RS485 specication)
Supporting Modbus functions 3 Read Holding Registers
4 Read Input Registers
6 Write Single Registers
Register format 16-Bit UInt Register
32-Bit Float Register (only from software version 5.x.x.x or higher)
Max. cable lengths/ type 600 m
Balanced twisted pair with shield, 100-120 Ohm impedance
Topology Line (Daisy Chain)
Software version device 5.x.x.x or higher
bold data = default settings

8Communication interface Integrated Controller
3.2 Technical data Modbus TCP
Protocol Modbus TCP
Interface RJ45 Ethernet port
Port 502 (options 1 - 65535)
Modbus address 255
Max. number of devices According Ethernet specication
Bitrate 10 / 100 Mbits/s (according to Ethernet specication)
Control signal timeout 0-300s (300s)
Supporting Modbus functions 3 Read Holding Registers
4 Read Input Registers
6 Write Single Registers
Register format 16-Bit UInt Register
32-Bit Float Register
Max. cable lengths/ type 100m, CAT5 / 6
Topology Bus (according to Ethernet specication)
Max. number of clients 3
Software version device Version 5.8 or higher
bold data = default settings

9Modbus RTU
4 Modbus RTU
4.1 Before installation
To do installation works on the respective device you have to switch off the device and secure it from
unintended switch-on according to the operation manual! Also follow any other safety instructions from
the user manual. If not mentioned otherwise, the specications of the Modbus RTU or RS485 standard
apply. The installation has to be carried out in accordance with local regulations.
It's recommended to update the device software to the newest version before start the implementation
of the device in a Modbus RTU network.
The respective device acts as a slave only. The Modbus RTU master - slave principle only allows the
master (e.g. a control computer) to initiate date transmission. The respective slave device then reacts and
exports the requested data to the master or carries out the action required by the master. In a Modbus
RTU network only one master may be present.
4.2 Network structure Modbus RTU
GND
+
–
GND
+
–
J6
GND
+
–
J6
Device 1
Master
RS485
Device 2
Shield
Fig. 1: Example Modbus RTU Network
– Connect the cable shield on one side with the functional earth
– Connect all GND together
– Install bus line separate from supply voltage
– Topology: Daisy chain
– All devices of the same network need the same settings concerning baud rate and parity
– Every Modbus device address can only be allocated once within the same network.

10 Modbus RTU
4.3 Connection and conguration of the Integrated Controller for Modbus RTU
3V
CR2032
GND + – GND + – GND + –24V GND
BMS
(USB)
RJ45
J7
J4J8J11
J6
J10
J12
J14
3J 2J
J7
J4
GND
+
–
Fig. 2: Integrated Controller (back view)
– Modbus RTU communication via port J6 "BMS"
– Jumper J7 has to be set for all devices.
– Jumper J4 only has to be set for the last devices in the net (end of line termination at the beginning
and end of the Modbus net). Jumper J4 set = end of line termination resistor activated.
– Jumper J4 has to be always removed by using the optional galvanic isolation (see chapter 9).
– All devices have to connected via GND.
– Software Version 1.1.0.23 or higher is needed (recommended software version 5.x.x.x or higher).
Important: When laying the network cabling,
make sure there is sufcient distance to other
cables, especially if they are connected to the
mains!