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RS-232 WIRELESS BRIDGE USER’S MANAUL REV. 02 

 

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-485, Analog and Digital I/O and USB Wireless Bridge products that share the same radio 
configuration. By using an RS-485 Wireless Bridge at point A and a RS-232 Wireless Bridge at point B, the 
wireless bridges can act as a RS-485 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 4000ft. 

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 

 

Table 1. General Performance Specifications 

 

 

Summary of Contents for 24HP

Page 1: ...RS 232 Wireless Bridge USERS MANUAL R02 ...

Page 2: ... 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 14 Part Numbers and Compatibility 14 Certifications 15 ...

Page 3: ...dge products The RS 232 Wireless Bridge will communicate with the RS 485 Analog and Digital I O and USB Wireless Bridge products that share the same radio configuration By using an RS 485 Wireless Bridge at point A and a RS 232 Wireless Bridge at point B the wireless bridges can act as a RS 485 to RS 232 over the air converter Specifications Performance 24LP 24HP 09SX OVER THE AIR DATA RATE 250 Kb...

Page 4: ...L REV 02 4 Power Requirements 24LP 24HP 09SX INPUT VOLTAGE 7 30VDC 7 30VDC 7 30VDC TRANSMIT CURRENT 12mA 12V 40mA 12V 270mA 12V RECEIVE CURRENT 12mA 12V 12mA 12V 17mA 12V Table 2 Power Requirements Mechanical Fig 1 Mechanical Dimensions ...

Page 5: ...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 Wireless Bridge DB9 RS232 DCE Pinout PI...

Page 6: ...ata 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 ins...

Page 7: ...s 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 freq...

Page 8: ...nt 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 ...

Page 9: ... 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 information terminal If a command prompt appears that port is the information terminal The command prompt for t...

Page 10: ...ber 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 load...

Page 11: ...ts 1 The host processor 2 XBee radio module The host processor manages the USB interface the information menu and communication to and from the XBee radio module Changing the device s baud rate is a two step process In order to change the baud rate successfully the following steps must be followed in order 1 Change the baud rate on the XBee module through the data COM port using AT commands or the...

Page 12: ...dule is discovered on the data port in this case COM43 The baud rate is changed to 115200 The Write button is used to store the setting Fig 10 X CTU Baud Rate Setting Step 2 On the Wireless Bridge information terminal COM44 in this example the set uart rate 115200 is issued followed by set store ...

Page 13: ...dule Consequently all radio settings can be read or set with Digi AT commands or Digi X CTU software As a general rule the only commands that might need be set are the Networking and Serial Interfacing commands Any I O commands or other features are not used See Digi s website at www digi com and the XBee user manual and discussion forums for more information ...

Page 14: ... for the 09SX variant Part Numbers and Compatibility The RS 232 Wireless Bridge comes with three basic options depending on range requirements The 24LP and 24HP operate at 2 4 GHz and the 09SX operates in the 902 928MHz band Any 24xx device can transmit and receive data from an 24xx RS 485 USB or ADIO Wireless Bridge Likewise for the 09SX families Orderable Part Numbers Description WB RS232 24LP A...

Page 15: ... there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Re orient or relocate the receiving antenna Increase the separation betwe...

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