A
RF53
Data modem
User Guide
No part of this document may be reproduced or transmitted (in electronic or
paper version, photocopy) without Adeunis RF consent.
This document is subject to change without notice.
All trademarks mentioned in this guide are the property of their respective
owner.
ADEUNIS RF
283, rue Louis Néel
38920 Crolles
France
Phone +33 (0)4 76 92 07 77
Fax +33 (0)4 76 08 97 46
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Table of Contents
About this document.........................................................................2
Declaration of conformity .................................................................3
Overview...........................................................................................4
Product Power supply .......................................................................4
Serial link wiring...............................................................................5
MODEM / DTE RS232.........................................................................5
DCE RS232........................................................................................6
RS485 wiring.....................................................................................6
Radio communication .......................................................................9
Radio communication.........................................................................9
Radio channels ................................................................................10
Radio rate selection .........................................................................11
Channel rejection.............................................................................11
Modem operating mode ..................................................................12
Command mode ..............................................................................13
Transceiver mode ............................................................................14
Transceiver state machine................................................................ 15
AT Commands .................................................................................16
Description ...................................................................................... 16
Set of commands.............................................................................16
Register description .........................................................................18
Specifications..................................................................................23
Glossary ..........................................................................................25
ANNEX : Firmware updates.............................................................25
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About this document
RF53
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User Guide
This guide describes the A
RF53
devices, their options and accessories.
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Declaration of conformity
Manufacturer’s name: ADEUNIS R.F.
Manufacturer’s address Parc Technologique PRE ROUX IV
38920 CROLLES - FRANCE
declares that the product if used and installed according to the user guide available on
our web site www.adeunis-rf.com
Product Name: ARF53
Product Number(s): ARF7474D / ARF7474F / ARF7474H / ARF7474J
Product options:
complies with the RTTE Directive 99/5/EC:
EMC: conformity is proven by compliance to the harmonized standard EN 301-489
Safety: conformity to the standard EN 60950-1/2001
Radio: conformity is proven by compliance to harmonized standard EN 300-220 covering
essential radio requirements of the RTTE directive.
Exposure to radio frequency signals: Regarding the 1999/519/EC recommendation,
when using the device, keep the product at least 20 cm from your body.
Notes: - Conformity has been evaluated according to the procedure described in
Annex III of the RTTE directive.
- Receiver class (if applicable): 3.
Crolles, November 6th, 2007
VINCENT Hervé / Quality manager
Download of the user guide
Thank you for having chosen the ADEUNIS RF products.
NOTA : this modem is set up in Narrow Band (channel 19) to optimize the range. The
radio data rate is then limited to 10 kBps. To modify these parameters thank you to
apply the instructions mentioned on the user guide downloadable on our web site
www.adeunis-rf.com
Index Products
Paragraph Modems > Data modem
Print version available upon request
9 Tel : +33 4 76 92 07 77
9 Email : arf@adeunis-rf.com
283 rue Louis NEEL
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Overview
The modem converts data from a serial link into a radio frame to be sent to a
similar piece of equipment.
RS232 serial lin
The operating parameters of these modems (serial link, radio management…)
can be updated through commands on the serial link.
The products are available either in card version to be integrated in an
assembly or as an IP65 chip. In the IP65 case, the products are fixed with
the fixing lugs onto the top (antenna) and bottom (stuffing box) of the casing
(4 screws not provided).
Radio transmission
Product Power supply
To perform wiring of these products, the bottom part of the housing (part
with stuffing box) has to be opened by unscrewing the two stainless steel
screws on each side.
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Retirer les vis de la par t ie
Remove these screws
avec presse étoupe
The ARF53 range products are supplied from a DC voltage source. This
voltage source must be 4,5V minimum and must not exceed 36 Vdc. Green
LED is ON when powered.
EASY
+ -
TX
RX
RTS CTS
TX+ TX- RX+
RX-
ON
1 2
ON
CHECK
Green LED is ON when modem is
powered.
+ DC Supply.
Serial link wiring
MODEM / DTE RS232
This is for example the case of a modem connected to a PC. RTS and CTS are
required only if flow control is used.
Ref. 08-07-V6-lmn p 5
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N° / SUB-D 9 NOM
+ Vcc
5 GND
7 RTS
2 RXD
3 TXD
8 CTS
ON
1 2
+
-
RTS
RX
TX
CTS
TX+
TX-
RX+
RX-
DCE RS232
This is for example the case of a modem connected to a measuring device.
RTS and CTS are required only if flow control is used.
EASY CHECK
Serial link activity will make the green LED flashing, whatever the selected
data rate is right or wrong.
N° / SUB-D 9 NOM
+ Vcc
5 GND
8 RTS
3 RXD
2 TXD
7 CTS
ON
1 2
INHIB
+
-
RTS
RX
X
CTS
X-
RX+
RX-
RS485 wiring
The RS485 bus wiring needs only two wires (TX+ is connected to RX+ and
TX- is connected to RX- on the PCB)
Ref. 08-07-V6-lmn p 6
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BUS RS485 NAME
+ Vcc
GND
TX+/RX+
RX-
B TX-
Connect only TXor RX- (note 1)
Note 1:
¾ TX- is co n n e c te d to R X - on the P C B
¾ TX+ is conn ec te d to R X+ o n the PCB
1 2
+
INHIB
-
RTS
RX
TX
CTS
TX+
TX-
ON
RX+
RX-
Con n ec t o n ly T X+
or RX+ (note 1)
Figure 1: RS485 wiring
In order to activate the RS485 management the SW1.1 switch MUST be ON
and the S215 value MUST be 1 (see the following table).
W
ARNING
the SW1.1 switch is read only at the power-up. Changing the SW1.1 switch
when the modem is already running will not be taken in account.
S215
values
1 ON RS485 control lines management
1 OFF RS232 configuration
0 ignoré RS232 configuration
SW1.1 Note
Table 1: R485/232 configuration settings
Ref. 08-07-V6-lmn p 7
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By default the DE and RE lines are asserted LOW, allowing receiving
character from the RS485 differential bus. The DE and RE lines are asserted
HIGH only when one or several characters have to be transmitted over the
RS485 differential bus: when a radio frame is demodulated, the lines are
asserted HIGH and then the data extracted from the radio frame are sent to
the module TXD line and therefore to the RS485 differential bus. When the
last character has been transmitted over the RS485 differential bus, the lines
are asserted LOW.
Figure 2 : DE/RE timing when data are sent over the serial link
Threshold: minimum = 1 µs
Tde: set according to the S219 register value (see table hereafter)
S219 0 1 2 3 4 5 10 20 40 60 80
Tde
min
15
µs
35
µs
65
µs
135
µs
150
µs
190
µs
330
µs
600
µs
1,1
ms
1,7
ms
2,3
ms
In command mode, a reply is sent back (on the TXD line) according to the
following DE/RE timing:
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The RS485 link needs to be adapted (each side). The modem includes a
100Ω termination resistor:
SW1.2 = ON, the resistor is connected between A and B (respectively RX+
and RX-)
SW1.2 = OFF, the resistor is not connected between A and B.
If the modem is ending the RS485 bus, SW1.1 must be ON.
B’ / Z
T
A’ / Y
B
R
A
Network termination 485
RS485 Network
Rt
100 Ω
SW1.2
Z / TX-
T
Y / TX+
B / RX-
R
A / RX+
MODEM
E
ASY CHECK
Serial link activity will make the green LED flashing, whatever the selected
data rate is right or wrong.
Radio communication
Radio communication
869 MHz version
This modem has several channels over the 869 MHz Band that can be
selected using AT commands, distributed in Wide Band and Narrow Band.
Wide Band channel:
1 Wide Band channels
57.6 kbit/s “air rate”
channel spacing : 500 kHz
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Sensitivity : - 108 dBm
Adjacent channel rejection : see chapter Erreur ! Source du renvoi
introuvable.
Narrow Band channel:
3 Narrow Band channels
10 kbit/s “air rate”
channel spacing : 100 kHz
Sensitivity : - 112 dBm
Adjacent channel rejection: see chapter Erreur ! Source du renvoi
introuvable.
This module is designed to operate according to CEPT/ERC/REC 70-03
recommendation. This recommendation has been drawn up by the European
Radio communications Committee (ERC) under CEPT.
Radio channels
The S200 register allows choosing the desired channel and the associated
radio rate:
The Wide Band channel is selected according to the following table:
Channel
S200
1 869,525
Figure 3 : Wide band channel
The 3 Narrow Band channels are selected according to the
following table:
Channel
S200
19 869,450
84 869,525
85 869,600
Figure 4 : narrow band channels
Frequency
(MHz)
Frequency
(MHz)
Ref. 08-07-V6-lmn p 10
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Radio rate selection
For 869 MHz version, the Radio rate selection is automatically done when
setting the channel number:
• If you choose a channel number = 1 (Wide Band), the radio rate
will automatically switch to 57600 bit/s.
• If you choose a channel number = 19 or 84 or 85, the module will
operate in the Narrow Band configuration. The radio rate will
switch automatically to 10 kbit/s.
Channel rejection
The graph below shows the typical channels rejection in WideBand (WB) and
NarrowBand (NB) modes.
80
70
60
50
40
rejection (dB)
30
20
10
-2000 -1750 -1500 -1250 -1000 -750 -500 -250 0 250 500 750 1000 1250 1500 1750 2000
frequency step / Fchannel (kHz)
N
OTES
Particular attention is required for product installation. In the case where
several links must works in the same area (independently of the channel
positions), the minimum distance between 2 products belonging to different
radio links is 3 meters. Even with this precaution (depending of the product
environment), channel rejection could be reduced.
WB
NB
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RSSI reading
The RSSI (Received Strength Signal Indicator) gives an indication for the
received power level on the first channel of the hopping table.
It could be accessed with ATS230?<cr> command.
Power level
NOTE
The RSSI level is only an indication. Use this level with care due to the
dispersion between components.
The schema above could be modified from one to another product. The
operating temperature could also have an impact on these dispersions.
The RSSI level could also indicate the potential presence of any jammer in
the used channel.
The RSSI is a necessary but not sufficient condition to get a correct reception.
Modem operating mode
Two operating modes are available:
• Command mode (usage of AT commands)
• Transceiver or normal mode (serial data are transmitted on radio
link)
At power up the transceiver is in transceiver mode: it is able to send / receive
data to / from the radio link according to its current parameter configuration.
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Command mode
The command mode is used to read and update the modem configuration
registers using AT command.
N
OTE
The AT command can be locked using ATPWD command.
In command mode, the radio is inhibited (reception and transmission),
excepted when using test command.
Entering command mode: issues on the serial link a +++ sequence. The
sequence of 3 consecutive + characters is accepted only if no character have
been seen before and after the +++ sequence. Register (S214) defines the
silence duration.
T
IPS 1
if you are using a terminal (such as Hyperterm), you have to send the +++
sequence using a text file (first create a text file containing only the +++
characters, and then use in Hyperterm the command “Send text file” in the
“Transfer menu”)
T
IPS 2
Exiting command mode (return back in transceiver mode): send the serial
command
ATO <cr>
E
ASY CHECK
When receiving a right command, modem will answer:
‘O’<cr> (ASCII character 0x4F) for accepted command (or OK command)
‘E’<cr> for error
Specific string when specified
Ref. 08-07-V6-lmn p 13
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Transceiver mode
In transceiver mode, two protocols are available:
• Transparent mode, without flow control.
• Addressed mode, with flow control (see register S216)
The communication is always half-duplex. The radio transmission is
processed prior to the radio reception (when the transceiver is sending a
radio frame, it is not able to decode any incoming radio frame).
If no data are sent on the serial link, the modem is waiting for radio
reception. Each radio frame sent by another modem is received and the
validated data extracted from the radio frame are sent on the serial link.
When the last character has been sent on the serial link, it is possible to send
an answer at least 100 µs (minimum) after the end of this last character.
All the data received on the serial link are encapsulated in a radio frame.
The radio frame format depends on the used protocol.
When acting as transceiver, the radio frame transmission always starts under
the following conditions:
Detection of a silence on the serial link (greater than S217) after the
reception of the latest character.
Or when the number of received characters from the serial link is higher or
equal to the maximum radio frame size (S218).
Transparent mode
In transparent mode, the modem acts as a wire serial link. It means that
alternately, the modem sends on the radio the data received from the serial
link and sends on the serial link the data received from the radio.
Ref. 08-07-V6-lmn p 14
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The radio frame format is:
<Preamble><synchro>DATA <postambule>.
Preamble, synchronisation and postambule are used for the radio reception.
Addressed mode
In transmission mode, data received on the serial link are sent on the radio
link with the following format:
<Preamble><synchro><Address> DATA <postambule>.
Preamble, synchronisation and postambule are used for the radio reception.
The Address field is set up with S256 value (LSB first).
In reception mode
The <Address> field of the radio frame is checked with the reception address
(S252)
If the radio frame address matches the transceiver reception
Transceiver state machine
When operating in transceiver mode the 'RF transmission' state machine is:
Idle state of the transceiver: by default the transceiver is waiting for
incoming data on the RS232 link and for incoming radio frame on the radio
link.
The RS232 link has a higher priority than the radio link (if a radio frame is
demodulated meanwhile some RS232 characters are detected on the serial
link, the radio frame will be discarded and the RS232 incoming data will be
processed).
Processing incoming RS232 data: the incoming RS232 data are internally
buffered. The buffered data are sent in a radio frame (the RF modulation is
started) when almost one of the following conditions occurs:
if a break (silence greater than S217 timeout) is detected on the
incoming serial flow (no more data to be sent).
if the radio buffer size is reached (the number of buffered
characters are equal or greater than the S218 size).
Processing incoming radio frame: the valid data are extracted from the
incoming radio frame and internally buffered. The buffered data are sent on
the fly to the RS232 module output.
Ref. 08-07-V6-lmn p 15
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AT Commands
Description
AT commands are interpreted only when the transceiver is in Command
mode.
Command: are used to read and update the modem parameters
A command starts with the 2 ASCII ‘AT’ characters. ‘AT’ means ‘Attention’
follow with one or several characters or other data.
Each command is ended with <cr> (carriage return).
In the same command, the time between 2 characters must be less than 10s.
E
ASY CHECK:
When receiving a right command, modem will answer:
‘O’<cr> (ASCII character 0x4F) for accepted command (or OK command)
‘E’<cr> for error
Specific string when specified
Set of commands
Commands Description
Operating mode selection
ATO Return back to transceiver mode.
<silence>+++<silence> Command mode activation. The +++ sequence must be
preceded and followed by a calibrated silence (no other
character)
Registers management
Ref. 08-07-V6-lmn p 16
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ATSn? Displays the Sn register content where n represents the
ATSn=m Sets the Sn register value with ‘m’. n represents the register
AT&W Saves the new register configuration in EEPROM. Each time
AT/S Displays all register values. The response has the following
AT/V Software version display. The response has the following
ATR Restore the register default values
ATPWD=m m = pin code (register S205) : unlock all AT commands.
register number.
The response has the following format:
Sn=y<cr><lf>
number..
you switch on the modem, the EEPROM configuration will be
loaded in the modem registers.
format:
Sxxx=y<cr><lf> for each register.
format:
Adeunis RF Versatile Modem II 868 MHz 500mW
Vxx.yy<cr><lf>
Be careful: When restoring USB DC supplied modem regs,
S231 - RF power will become “3” which is incompatible with
USB power supply.
m = 0000 : set registers to default value and unlock all AT
commands.
Test modes
ATT1 Pure Carrier (data=0) transmission using current channel.
The output of this mode is achieved by reception of any
character on the serial link.
ATT2 Pure Carrier (data=1) transmission using current channel.
The output of this mode is achieved by reception of any
character on the serial link.
ATT3-ATT6 Modulation using current channel. The output of this mode
is achieved by reception of any character on the serial link.
ATT3: 0.9 KHz modulation
ATT4: 3.6 KHz modulation
ATT5: 14.4 KHz modulation
ATT6: 28.8 KHz modulation
AT/S is not available for baud rate lower than 2400 bauds
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Register description
The register value could be updated using the ATSn=m<cr> command and
displayed using ATSn?<cr> command.
At power-up, the previous transceiver configuration is restored from E2PROM
(non volatile) to RAM. The registers are located in RAM registers, any
modification is performed on RAM registers: To save current register
configurations, it is necessary to use the AT&W<cr> command (If not, the
updated parameters are lost in case of power shortage).
The registers are shared in 2 types: read only (R) or read/write (R/W)
Type Regis-
R/W S200 Channel
When leaving factory, this modem is set up in Narrow Band (channel 19) to optimize the
range
R/W S202 Command
R/W S204 Preamble
Function Description Default
ter
number
mode, autoexit
duration
Radio management
Radio channel for 869 MHz version :
1, Wide Band channel.
19, 84 ou 85, Narrow Band channels.
Automatic command mode exit
0 : (no specific management), the
command mode will be exited only when
an ATO command is issued.
From 1 to 60 : timeout in second. Î If
no activity (no character, command
reception) is detected in command mode
for the programmed timeout, the
command mode will be exited. The
module is back to transceiver mode
Preamble duration, unit ms
From 4 up to 50
value Note
1 3
0
5 4
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Type Regis-
R/W S217 Serial timeout
R/W S218 Radio frame
R S230 RSSI level Displays the reception level of the latest
R/W S231 RF OUT level Adjusts the RF out level
R/W S210 Baudrate Serial link rate in bits/s
Function Description Default
ter
for radio
length
Serial timeout before starting radio
transmission, unit ms.
From 3 up to 240.
Size of the radio frame (from 1 up to
240).
When this size is reached:
the transceiver sends a radio
frame
The RTS signal is activated
(pull to VDD) only if the module is
operating in the addressed mode.
received message.
Response: S230=-xxx dBm<cr><lf>
with xxx decimal value
Example S230=-80 dBm
0 => 20 dBm (100 mW)
1 => 23 dBm (200 mW)
2 => 24,5 dBm (<450 mA for USB
power supply)
3 => 27 dBm (500 mW – Not for USB
power supply)
Serial link
‘0’: 600
‘1’: 1 200
‘2’: 2 400
‘3’: 4 800
‘4’: 9 600
‘5’: 19 200
‘6’: 38 400
‘7’: 57 600
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value Note
128
None
3 1
3
4 1,2
,
5
Ref. 08-07-V6-lmn p 19
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Type Regis-
R/W S211 Data length ‘7’ : 7 bits
R/W S212 Parity ‘1’ : none
R/W S213 Stop bits ‘1 ‘ : 1 stop bit
R/W S214 Command
R/W S215 Interface type ‘0’ : RS232 only
R/W S216 Handshake ‘0’ : hardware, RTS (restricted to
R/W S219 RS485 delay Delay between DE activation and the
R/W S220 Protocol ‘1’= transparent mode
R/W S252 Reception
R/W S256 Transmission
R/W S205 Pin code Pin code value
R/W S207 Pin code
Function Description Default
ter
‘8’ : 8 bits
‘2’ : even
‘3’ : odd
‘2’ : 2 stop bit
timeout
address
address
activation
Time out duration for detecting the +++
pattern, unit ms. From 3 up to 240.
‘1’ : RS232 or RS485 (managed DE/RE
lines)
addressed protocol)
‘2’ : none
first RS485 transmitted byte
From 0 up to 160
Protocol
‘6’= addressed
From 0 up to FFFF
Used in addressed protocol only, for
filtering incoming frame
From 0 up to FFFF
Used in addressed protocol only, added
to out coming frame
Miscellaneous
Value 0000 is not allowed
0 pin code disabled
1 pin code enabled
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value Note
8 5
1 5
1 5
3 1
1
2
3
6
1111
0
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NOTE 1
when a serial speed change is requested, the S214 and S217 registers values
are automatically set to a value greater or equal than the duration of three
characters in the requested speed (13 ms for 2400 bauds, 7 ms for 4800, 3
ms otherwise).
N
OTE 2
streaming mode without flow control. Be careful Î using a serial rate greater
to the radio rate must produce character losts if the flow control is not used.
If the radio rate is equal to the serial rate, the radio frame is longer than the
serial frame, due to radio protocol overhead; but the radio overhead will be
generated only when the radio transmission begins Î this overhead will be
absorbed by internal buffer size.
For example, if the current radio rate is 10 kbit/s, a serial rate of 9 600
should be used without flow control, while using a serial rate of 19 200 (with
10 kbit/s for the radio rate) will produce data overrun.
For avoiding character lost, you should:
use the flow control (addressed mode with hardware handshake)
or use a serial rate lower or equal to the radio rate
or limit the size of serial data to the maximum size of the internal buffer
(S218).
N
OTE 3
:(S200 register) See pages 7 & 8.
N
OTE 4
The preamble duration is linked to the current radio rate.
The preamble values are:
Default preamble value Minimum preamble value
WB channel
(high radio rate)
NB channel
(low radio rate)
Ref. 08-07-V6-lmn p 21
5 ms 4 ms
20 ms 10 ms
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B
E CAREFULL
Keep in mind reducing preamble duration below default value will reduce
transmission delay but may generate possible frame error rate (up to 1 or
2/1000)!!!
N
OTE 5
When changing the serial link configuration (rate, parity, stop bit…), the
answer is done using the old serial link format; the next command must be
sent using the new serial format.
Ref. 08-07-V6-lmn p 22
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Specifications
General technical characteristics
Operating temperature -30 to +70 °C
Power
supply
Size 145x100x40 mm
Number of channels 1 WB channel and 3 NB channels
Modulation FSK
Packaging IP65 Box with integrated or external antenna
Transmitter
Programmable
Frequencies
Programmable Radiated
RF power
Tx / Rx consumption 3,2 W / 0,27 W
Receiver
Receiver Sensitivity Down to -112 dBm for BER 10-3
Radio data
rate
RSSI available through AT commands
4,5 to 36 Volts (integrated regulator)
869,450 – 869,525 – 869,600 MHz
Up to 27 dBm (500 mW).
from 10000 or 57600 bps
Ref. 08-07-V6-lmn p 23
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Protocol
Serial data
rate
Serial ports TxD, RxD, RTS, CTS. Standard configuration:
Setup and configuration
Modes Transparent or Addressed mode, full custom
Embedded protocol ADEUNIS-RF enhanced and versatile RF
Embedded profiles Multimode modem
Standards compliance EN 300-220 and EN 301-489 (fully certified
Range up to 6 Km
References
ARF7474D : Modem RS232/RS485 – IP65 box
ARF7474F : Modem RS232/485- IP65 box with external antenna(*)
ARF7474H : Modem USB – IP65 box
ARF7474J : Modem USB –IP65 box with external antenna(*)
from 600 to 57600 bauds (programmable through
AT commands)
RS232 port. The RS485 configuration is
performed through AT commands
through Hayes commands
firmware on demand
communications manager
modem)
Ref. 08-07-V6-lmn p 24
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Glossary
TBD To Be Defined
NC Not Connected
NU Not Used
FHSS Frequency Hopping Spread Spectrum
FIFO First In First Out
WB Wide Band
NB Narrow Band
ANNEX : Firmware updates
Firmware Updates
00.18 Pin code added
Firmware Updates
V6.0 Pin code added (LMN)
V4.0 NB configuration when leaving factory
V3.0 RF power update + “EASY CHECK” assertions + Power Mgt suppress
V2.0 Commands update
V1.0 Original version
Ref. 08-07-V6-lmn p 25
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