Datawave 24HP Manuale utente
RS-232 Wireless Bridge
USERS MANUAL
R02
RS-232 WIRELESS BRIDGE USER’S MANAUL REV. 02 2
Contents
Overview ....................................................................................................................................................... 3
Specifications ................................................................................................................................................ 3
Performance ............................................................................................................................................. 3
Power Requirements ................................................................................................................................
Mechanical ................................................................................................................................................
Pinout and Wiring ..................................................................................................................................... 5
Operation ...................................................................................................................................................... 6
Standard Operation .................................................................................................................................. 6
LED Indication ....................................................................................................................................... 6
Data Formats and Baud Rates ............................................................................................................... 7
Common Configurations and Use Cases ....................................................................................................... 7
Radio Architectures ................................................................................................................................... 7
Point-to Point ........................................................................................................................................ 7
Point-to-Multipoint ............................................................................................................................... 8
Communicating with the Wireless Bridge .................................................................................................... 9
RS-232 Command Reference Table ........................................................................................................ 10
Changing the Baud Rate .......................................................................................................................... 11
Configuring the XBee Module ................................................................................................................. 13
Antennas ..................................................................................................................................................... 1
Part Numbers and Compatibility ................................................................................................................ 1
Certifications ............................................................................................................................................... 15
RS-232 WIRELESS BRIDGE USER’S MANAUL REV. 02 3
Overview
The RS-232 wireless bridge is designed to be a transparent bidirectional three-wire RS-232 cable
replacement. The RS-232 Wireless Bridge has a DB9 DCE female connector for data and for the internal
radio module configuration, and a micro USB port to configure settings that are specific to the RS-232
Wireless Bridge. The RS-232 Wireless Bridge is available in three different options differing by frequency
and RF power output.
It is possible to mix and match Wireless Bridge products. The RS-232 Wireless Bridge will communicate
with the RS- 85, Analog and Digital I/O and USB Wireless Bridge products that share the same radio
configuration. By using an RS- 85 Wireless Bridge at point A and a RS-232 Wireless Bridge at point B, the
wireless bridges can act as a RS- 85 to RS-232 over-the-air converter.
Specifications
Performance
24LP 24HP 09SX
OVER
-
THE
-
AIR
DATA RATE
250 Kbps
250 Kbps
Low: 10Kbps
Mid: 110Kbps
High: 250Kbps
INDOOR/URBAN
RANGE
Up to 200ft.
Up to 300ft.
Up to 1000ft.
OUTDOOR/ RF LINE
-
OF-SITE RANGE
Up to 000ft.
Up to 2 miles
Up to
10 miles
TRANSMIT POWER
6.3 mW
63 mW
1 Watt
RECEIVE SENSITIVITY
-
101 dBm
-
101 dBm
Low:
-
113 dBm
Mid: -106 dBm
High: -103 dBm
Tab e 1. Genera Performance Specifications
RS-232 WIRELESS BRIDGE USER’S MANAUL REV. 02 4
Power Requirements
24LP 24HP 09SX
INPUT VOLTAGE
7
-
30VDC
7
-
30VDC
7
-
30VDC
TRANSMIT CURRENT
12mA @ 12V
0mA @ 12V
270mA @ 12V
RECEIVE CURRENT
12mA @ 12V
12mA @ 12V
17mA @ 12V
Tab e 2. Power Requirements
Mechanical
Fig. 1 Mechanica Dimensions
RS-232 WIRELESS BRIDGE USER’S MANAUL REV. 02 5
The mechanical dimensions for the Wireless Bridge are shown in Figure 1. The mechanical dimensions
are shown with the optional DIN rail mount bracket which is not included with the standard part
number. Mechanical data for the antenna is not shown.
Pinout and Wiring
The pinout follows the standard RS-232 Data Communications Equipment (DCE) device. Signal names
for RS-232 are defined from the standpoint of a Data Terminal Equipment (DTE) device. The signal
named Receive Data is an output from the RS-232 Wireless Bridge and the signal named Transmit Data is
an input. Not all RS-232 signals are implemented on the Wireless Bridge. Only Transmit Data, Received
Data and Ground are required for basic function. The DTR input may be used to control the pin sleep
function on the internal radio for reduced power draw.
Wire ess Bridge DB9 RS232 DCE Pinout
PIN
Name Direction
1 Carrier Detect (DCD) Not Used
2 Receive Data (RD) Output
3 Transmit Data (TD) Input
Data Terminal Ready (DTR) Input
5 Ground (GND) Signal Ground
6 Data Set Ready (DSR) Not Used
7 Request to Send (RTS) Not Used
8 Clear to Send (CTS) Not Used
9 Ring Indicator (RI) Not Used
Fig 2. DB9 Pinout
RS-232 WIRELESS BRIDGE USER’S MANAUL REV. 02 6
Fig 3. Wire ess Bridge Connectors and Pins
Operation
Standard Operation
The RS-232 Wireless Bridge is designed to be data transparent. By default, any data sent into one device
is broadcast and received by all other Wireless Bridge devices within range. Any device that receives the
transmitted data packet will send the received data out the serial port to its host. Without any
configuration the Wireless Bridge will operate in a point-to-point or point-to-multipoint mode.
Additional addressing can be used to isolate communication between specific devices or to create
unique networks.
The Wireless Bridge device is equipped with a micro USB connector. When the micro USB connector is
plugged into a USB host device such as a computer, the Wireless Bridge enumerates as two standard
serial COM ports. One port is a data port and can send and receive data. The second COM port is the
device’s information port. When the micro USB connector is plugged into the RS-232 Wireless Bridge,
the DB9 port is disabled. The DB9 port is the default data port and is automatically used whenever the
USB cable is not plugged in.
The Wireless Bridge uses standard composite device drivers which are preinstalled in Windows 10 and
MAC computers. Drivers will need to be installed for Windows 7 machines. While not every machine will
enumerate exactly the same, as a general rule the lower numbered COM port is for Wireless Bridge
configuration. The higher numbered COM port can be used to transmit or receive data over the USB
port.
LED ndication
The wireless bridge has four LEDS for indication. The Blue Power LED is lit any time the Wireless Bridge is
properly powered. A green TX LED and yellow RX LEDs indicate activity on the serial port of the device.
They do not necessarily reflect all activity that may be occurring over the air as they will only blink when
a properly addressed data packet is received. The Special function LED is lit when the USB port is in use.
RS-232 WIRELESS BRIDGE USER’S MANAUL REV. 02 7
Data Formats and Baud Rates
The default baud rate and data format is 9600 baud, 8 data bits, no parity and one stop bit. The baud
rate and data format can be adjusted by adjusting the BD and NB parameter of the radio module (See
the Changing the Baud Rate section). If the data of the sending or receiving devices do not correspond
with the data settings of the Wireless Bridge then the output data will appear garbled.
Common Configurations and Use Cases
Radio Architectures
Point-to Point
Fig. 4 Typica RS-232 Point-to-Point Configuration
The most basic architecture is point-to-point. In this mode, one Wireless Bridge Device communicates
with a second Wireless Bridge Device. If more than one pair of radios are within range of each other,
then certain addressing commands should be set within the on board Digi XBee radio to isolate the
individual pairs. The commands that control addressing are:
ID – Controls the network identification number.
CH- Controls the channel (frequency) of the device.
DH & DL – Sets the destination address. For point-to-point mode DH & DL on Radio A should be set to
the SH & SL values of Radio B and vice versa.
See the XBee S2C manual and X-CTU program for complete details.
XBee S2C Users Manua
https://www.digi.com/pdf/ds_xbee-s2c-802-15- .pdf
X-CTU Program – Digi’s XBee Configuration and Test Uti ity
https://www.digi.com/products/xbee-rf-solutions/xctu-software/xctu
RS-232 WIRELESS BRIDGE USER’S MANAUL REV. 02 8
Point-to-Multipoint
Fig. 5 Point-to-Mu tipoint Configuration
Figure 5 shows a typical point-to-multipoint configuration. By default, all the Wireless Bridge devices will
broadcast their data meaning that point-to-multipoint mode will work without any configuration. If
there is the potential for other Wireless Bridge networks to be in the same area, then all devices in a
given network may want to be set to a non-default PAN ID.
RS-232 WIRELESS BRIDGE USER’S MANAUL REV. 02 9
Communicating with the Wireless Bridge
The Wireless Bridge device can be connected to a PC through the micro USB port. Figure 6 shows the
device manager view of an example connected device. Note that a single device shows up as two
separate COM ports. In Figure 6, the COM ports are COM 3 & COM . The COM port numbers will vary
from machine to machine depending on what COM port device drivers have been previously installed.
Fig. 6 Examp e COM port Device Manager View
COM ports can be opened with any terminal program. Putty, Tera term and X-CTU may all be used to
send data and communicate with the Wireless Bridge. Links to some terminal programs can be found on
the Datawave website.
Once a COM port has been opened, pressing the ENTER key can determine which port is the data
terminal and which port is the i formatio terminal. If a command prompt appears, that port is the
i formatio terminal. The command prompt for the RS-232 Wireless Bridge indicates the Wireless
Bridge type and appears similar to the text below.
RS232>
Typing ‘help’ at the command prompt will display the list of available commands as shown in Figure 7.
Any data typed into the data terminal window will result in the data being transmitted. This can be
confirmed by watching the TX LED blink when data is sent.
RS-232 WIRELESS BRIDGE USER’S MANAUL REV. 02 10
Fig. 7 Data and Information Termina s
RS-232 Command Reference Table
Main
command
Function Command
Name Command Description Default
Value Value Range
help
Displays list of main
commands NA No parameters
info
Displays
device serial number
NA
No parameters
set & get defaults Restores factory default
settings. NA No parameters
pkts.en
Enables JSON output format
when used with an ADIO
Wireless Bridge
0 0 or 1
store
Stores settings to non
-
volatile
memory. NA No parameters
uart.rate
Changes the host to internal
radio baud rate. This
command should be used in
conjunction with changing the
radio baud rate.
9600 1200 - 115200
ver
Displays loaded firmware
version NA No parameters
Fig 8. List of RS-232 Wire ess Bridge Commands
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