UDOIT RFT-868-USB User manual

RFT-868-USB
Release A - 01/09/2015 Copyright 2015 Udoit Srl - All rights are reserved
www.udoit.eu
WIRELESS NETWORK
USER MANUAL
868.3 MHz
RFT-868-USB
USB RFTide Network Interface

RFT-868-USB
Release A - 01/09/2015 Copyright 2015 Udoit Srl - All rights are reserved
www.udoit.eu
Device Specifications
Power Supply: 5V (with USB 2.0 connection)
Dimensions ( L x W x H ): 72 x 10 x 24 mm
Radio Module TRX Features
1
Low Rx power consumption: 10mA.
Low Tx power consumption: 33mA @+10dBm.
Low Standby consumption: 4 µA.
FSK Modulation.
Good reception sensitivity: down to -100 dBm at 25 kb/s in FSK.
Packet handling feature with data whitening and automatic CRC generation.
Incoming sync word recognition.
Distance coverage: up to 20 m indoors (depending on building materials).
Effective Radiated Power (ERP): 5mW.
RFTide Network Features
Wireless mesh network topology.
Proprietary routing protocol and software application.
Centrally managed network from a Control Unit.
Advanced Encryption Standard (AES) of the data.
Typical Applications
Wireless alarm and security systems.
Wireless sensor networks.
Automated Meter reading.
Home and building automation.
Industrial monitoring and control.
Remote wireless control.
Revision History
Date Version Revision
15/09/2015 1.0 Initial Release
1
Refer to SEMTECH SX1211 Transceiver datasheet
http://www.semtech.com/images/datasheet/sx1211.pdf

RFT-868-USB
Release A - 01/09/2015 Copyright 2015 Udoit Srl - All rights are reserved
www.udoit.eu
CAUTION
Read this manual before attempting to install the device!
Failure to observe recommendations included in this manual may
be dangerous or cause a violation of the law. The manufacturer
Udoit Srl will not be held responsible for any loss or damage
resulting from not following the instruction of operating manual.
When handled carelessly or used in non-specified environment
conditions, the device may not function properly. It’s highly
recommended to ensure safety and property protection.
The RFT-868-USB is a usb-powered device. Using connections
other than specified may result in explosion. Dispose of properly,
observing environmental protection rules.

RFT-868-USB
Release A - 01/09/2015 Copyright 2015 Udoit Srl - All rights are reserved
www.udoit.eu
DESCRIPTION ....................................................................................................................................5
FIRST CONFIGURATION ..................................................................................................................6
RFTIDE COMMUNICATION PROTOCOL........................................................................................9

RFT-868-USB
Release A - 01/09/2015 Copyright 2015 Udoit Srl - All rights are reserved
www.udoit.eu
DESCRIPTION
The RFT-868-USB is the RFTide interface which permit to setup and manage the RFTide network.
It is used as Network ID authorizer: it comes out from the factory with a unique serialized Network
ID, which it will be added to all the other devices in order to grant the access. This device has the
characteristic to be the only one central communication node in the network, which all the other
devices refer to. The learning procedure is always the same for all the devices and the RFT-868-
USB defines the Node ID for each component.
After every learning procedure the new RFTide nodes will keep in memory the ID of the usb and
depending on the device will use it for alarms, button pressed and status messages (see RFT-868-
MAG, RFT-868-PIR. RFT-868-4CH and RFT-868-RELAY-S manuals) . For its controlling access
and to have full management of the network a Control Unit must be connected to the RFT-868-USB
device in order to setup and configure the RFTide network.
Figure 1 External view of the RFT-868-USB device

RFT-868-USB
Release A - 01/09/2015 Copyright 2015 Udoit Srl - All rights are reserved
www.udoit.eu
Figure 2 Internal view of the RFT-868-USB device
FIRST CONFIGURATION
In order to control data exchange it is possible to send commands through a serial port using an
esternal microcontroller or a PC. Referring to Figure 2, follow these configuration steps:
1. Connect the RFT-868-USB device to a usb 2.0 port (e.g. Personal Computer, Raspberry
Pi…).
The parameter necessary in order to establish a serial communication through a Virtual Com
Port VCP
2
are:
Baud Rate 19200
Data Bits 8 bit
Stop Bits 1 bit
Parity None
2. To verify the connection to the usb device the RFTide Software v1.0 for PC can be
downloaded from the following link:
http://www.rftide.com/download-area/
Whit this application it is possible to handle all the RFTide nodes.
2
VCP drivers can be found here: http://www.ftdichip.com/Drivers/VCP.htm

RFT-868-USB
Release A - 01/09/2015 Copyright 2015 Udoit Srl - All rights are reserved
www.udoit.eu
Figure 3 Software apllication for the RFT-868-USB
After connecting the RFT-868-USB select the proper serial Port and push “Set”(see Figure 3).
Pressing “Local Status” will show the address number, the Network ID, the Profile (None) and the
firmware version.
3. Configurations or particular activities may be different for every device which will be
associated, except the learning procedure which will be always the same:
Once the “Learning Status”
3
of
the RFTide device is active, it
can be programmed by defining
a progr address number (0
÷253), setting “No Profile” and
pushing the PROGR button.
3
Refer to the proper device manual “Learning procedure” section.

RFT-868-USB
Release A - 01/09/2015 Copyright 2015 Udoit Srl - All rights are reserved
www.udoit.eu
The led on the device must
blink for 2 seconds, after that it
will be ready and set for the
communication (see PING
Message section on RFTIDE
COMMUNICATION
PROTOCOL chapter). Doing
the same activity for all the
RFTide devices permit to
establish the desired RFTide
network.

RFT-868-USB
Release A - 01/09/2015 Copyright 2015 Udoit Srl - All rights are reserved
www.udoit.eu
RFTIDE COMMUNICATION PROTOCOL
Each message sent through serial port is composed by 11 bytes sorted as follow:
Cmd
LSB
Cmd
MSB Address
Byte
0
Byte
1
Byte
2
Byte
3
Byte
4
Byte
5
Byte
6
Byte
7
Command to be
executed or
action performed
Recipient
of the
message
Payload: it depends on the type of message sent
I. PING Message
Referring to Figure 3, on the “Ping” section of the “Network Install” part, it can be tested the radio
communication between the RFT-868-USB device and the other node by sending a “ping” packet.
Just filling the “Ping Address” field and click the ”Ping” button, if everything goes well, an
answer message will be received. In the payload part of the answer message it’s possible to verify
the firmware version and the profile set on the node.
Figure 4 Ping Sequence
Before sending a ping message it’s necessary that the recipient is included in the RFTide network
by the learning procedure and that the radio module is on (RFT-868-PIR and RFT-868-MAG
activate the radio communication only for a brief period in order to save the batteries).

RFT-868-USB
Release A - 01/09/2015 Copyright 2015 Udoit Srl - All rights are reserved
www.udoit.eu
II. SEND_PACKET Message
Referring to Figure 3, on the “Commands” section with the “Send Packet” field it’s possible to:
•Send a message with the RFTide command “SEND_PACKET” in case the acknowledge
from the recipient is required. Retries will be done till an ANSWER_MESSAGE won’t
arrive or even the second attempt results failure.
•Send a message with the RFTide command “UNIDIRECTIONAL_SEND_PACKET” in
case the acknowledge from the recipient is not required.
The payload of the message is fully editable by filling the fields.
Figure 5 Send Packet Sequences
Depending on the text, this kind of message is multi-purpose:
•STATUS_REQUEST (for RFT-868-PIR, RFT-868-MAG, RFT-868-RELAY-S).
•ON-OFF Command (for RFT-868-RELAY-S).