Synetica enLink Modbus User manual

enLink Modbus User Guide
LoRaWAN Wireless Modbus Bridge
•LoRaWAN long range wireless
•Externally powered 12-24V
•Modbus RTU RS485
•Up to 32 Modbus registers per enLink Modbus unit
•2-part Screw terminals, 2 x RS485 connectors
Modbus
LoRaWAN Wireless
Easy Setup
enLink Modbus instantly converts wired Modbus devices such as
meters, PLC’s and sensors to LoRa long range wireless.
Any instrument, device or sensor with a wired Modbus RS485
interface can be read and converted to a wireless device.
Modbus register values are transmitted to the cloud using long range
LoRa wireless where the device data can be displayed and analysed.
A built in USB port allows all parameters including Modbus
parameters, wireless signal strength and wireless network
configuration to be viewed and set using simple menus via any USB
enabled host such as a PC or Mac.
Features
• Up to 32 Modbus registers per enLink
Modbus unit
• Modbus RTU RS485
• LoRa long range wireless
• Frequency Range 863-870MHz*
• Frequency Range 902-928MHz*
• Up to +18dBm Tx Power
• Built in USB port for power and configuration
• Mains powered
• CE compliant
• RoHS compliant
• Made in the UK
*Model dependent, see Selection Guide section

SYNETICA enLink Modbus User Guide Rev 1.3
1. Introduction
LoRa devices can be configured using OTAA (Over-the-Air-Activation) or ABP (Activation-by-Personalisation).
OTAA is the most secure way to connect a device to the LoRa network. In OTAA, the device performs a Join-
procedure with the network, during which a dynamic DevAddr (device address) is assigned and security keys are
negotiated with the device.
ABP allows you to set the DevAddr as well as the security keys in the module. This is simpler than OTAA as there is
no Join procedure, however, it is less secure than OTAA.
This guide will illustrate using OTAA as it is the most secure and flexible method.
The OTAA configuration requires the following parameters to be correctly set:
•DevEUI: End-device Identifier. It is unique for every device and is set at device manufacture.
•AppEUI: Application Identifier. Used to identify the end application.
•AppKey: Application key. Used to create the session keys.
For many applications Synetica can supply enLink Modbus units with the above parameters pre-configured, so
providing the LoRa gateway has the matching keys the join process will happen automatically once the enLink
Modbus unit is in wireless range and switched on.
The DevEUI is always set at device manufacture and is unique. The device AppEUI and AppKey can easily be set via
the USB connection if required and the process is detailed later in this document.

SYNETICA enLink Modbus User Guide Rev 1.3
2. Join enLink devices to the LoRaWAN network
enLink devices in wireless range and with the correct AppEUI and AppKey settings set will automatically join the
LoRaWAN network when they are first powered up.
enLink Modbus Unit and Label
The unique DevEUI is printed on all enLink devices and is also present in the QR code. The DevEUI can be used to
identify the device once joined to the network.
Apply input power to the unit by connecting a 12 to 24V power source to the Vin terminals.
To power the device ON, slide the POWER switch to the right to the ON position as shown below.
Mod el
ENL-MOD-32
Energy Monitoring Equipment
Input 12-24Vdc
DevE UI
00-04-A3-0B-00-04-27-DB
E50447 8
001012 3
www.synetica.n et
Made in
Serial No:

SYNETICA enLink Modbus User Guide Rev 1.3
Switch to the ON position
Once powered ON, the enLink device will send a Join request message to the Conduit. The Status LED will blink
RED as shown below whilst the Join process is taking place. Depending on factors such as signal strength, RF
interference etc the Join process may take several seconds to complete.
Blinking Red LED –Attempting Join
When the device has successfully joined the network the Status LED will blink GREEN for several seconds to show
that the Join has been completed. The LED’s will then switch off to conserve the batteries.
Blinking Green LED –Device Successfully Joined
O

SYNETICA enLink Modbus User Guide Rev 1.3
3. Setting / changing the enLink LoRa keys
For many applications, Synetica can supply enLink Modbus units with the LoRa AppEUI and AppKey parameters
pre-configured to your requirements, whereby if the LoRa gateway has matching keys the join process will happen
automatically once the enLink Modbus unit is in wireless range and switched on.
The DevEUI is always set at device manufacture and is unique. The device AppEUI and AppKey can easily be set
via the USB connection as detailed below.
Connect a micro USB cable to the enLink unit.
When the USB is connected, the unit does not use the
voltage from the host PC to power itself, so requires
external power.
The device will attach to a COM port on your PC.
Using a terminal program (e.g. Teraterm https://ttssh2.osdn.jp/) connect to the COM port used by the enLink
device.
To verify which COM port is being used, check the Windows™ Device Manager (In Windows - Click the Start button,
type device manager into the search box and tap Device Manager on the menu.) Expand the Ports (Com & LPT)
menu as shown below.
In your terminal program press the Enter key. An enLink summary screen will appear as shown below. The default
password is the last four digits of the displayed DevEUI, in the screen below this is 83ed.
enLink logon screen
The screen below will show with the enLink Main Menu options. Enter Qto enter the Quick Start Menu.
enLink Main Menu

SYNETICA enLink Modbus User Guide Rev 1.3
The Quick Start Menu contains only the parameters that normally need to be configured to setup the device and
join the LoRa network.
From the Quick Start Menu you can change the AppEUI and AppKey.
Quick Start Settings Menu
From the Quick Start Settings Menu, access the AppEUI setting by entering 1. Enter the 16 character AppEUI using
numbers and letters a to f. Do not include spaces or any other characters. Pressing Swill enter the default AppEUI
which you can then edit. Press Enter when the key is correctly entered to return to the Quick Start Settings Menu.
AppEUI setting
From the Quick Start Settings Menu access the AppKey setting by entering 2. Enter the 32 character Appkey using
numbers and letters a to f. Do not include spaces or any other characters. Pressing Swill enter the default AppKey
which you can then edit. Press Enter when the key is correctly entered to return to the Quick Start Settings Menu.
AppKey setting
Press Xfrom the Quick Start Settings Menu to return to the enLink Main menu.
The header will show ** Reboot Required ** as shown below. The new key settings will not take effect until the
enLink device is restarted. Enter Rto reboot followed by OK. The device will restart with the entered AppEUI and
AppKey and attempt to join the LoRa network.
Reboot Required notification
Check your LoRaWAN network server to verify that the enLink device has joined successfully.

SYNETICA enLink Modbus User Guide Rev 1.3
4. Import / Export Modbus Configuration
The enLink Modbus menu allows you to save and set Modbus configuration data so it can be backed up and easily
used on multiple enLink Modbus units for rapid configuration.
5. Export Settings
To Export the settings, follow the steps below.
From the main menu enter c for Configure Device.
Main menu
Modbus menu
Next select m for Import / Export followed by efor Export.
The current settings will appear as text in a table, an example is shown below:
Exported configuration settings
Copy the table by highlighting the table and then select Alt-C on the keyboard to copy the table to the clipboard.
You can now paste this into a spreadsheet such as Excel. Convert the data to columns for easy editing by selecting
Data tab and “Text to column” with fixed width as the data type as shown below.

SYNETICA enLink Modbus User Guide Rev 1.3
Excel File
6. Import Settings
To import a saved configuration file, select m(for Import / Export) from the Modbus menu and then ito Import
(Tab delimited). Copy the configuration table from your spreadsheet file onto the clipboard and then in TeraTerm
right click in the window and a pop-up dialogue with the pasted clipboard information will show. See below. Select
OK from the dialogue and the configuration table will import. Press return to complete the process.
Paste configuration table into TeraTerm
Successfully imported configuration table.

SYNETICA enLink Modbus User Guide Rev 1.3
Test your settings by selecting a from the Modbus menu to read all data points as shown below.
Read Modbus registers
7. LoRaWAN Payload Decoder
The latest LoRaWAN payload decoders and guides are available on the Synetica GitHub repository:
https://github.com/synetica/enlink-decoder
A live payload decoder which allows you to paste LoRa payloads in Hexadecimal or Base 64 and see the correctly
decoded results can be found at the link below:
https://synetica.github.io/enlink-decoder/
8. Technical Support
For technical assistance, please visit the downloads section of our web site at www.synetica.net or email us at
[email protected]