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MDR24X User’s Manual

 

10/26/2006  

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Broadcast Attempts (For Servers in Point-to-Multipoint networks):  This value represents the 

number of times a data packet will be transmitted by the Point-to-Multipoint Server.  The default 
value is 4 attempts.  If communication is lost and the Clients’ Link LED is on, try increasing this 

value in small increments until communication is reestablished.  The valid range of values for this 
field is 0 to 255. 

System Identification:

  

A number from 0 to 256 that provides added security to each independent 

network of MDR24X units.  The System ID serves as an RF password to maintain secure transfers 
of data.  The System ID will not prevent inoperability that occurs from locating multiple Servers 

with the same Channel Number in the same coverage area.                

Important Note:  Collocated MDR24X networks must operate on different Channel Numbers.  All 

units in a given MDR24X network must have identical Channel Numbers and System IDs. 

Destination Address:  Programmed in the Point-to-Point Server, Destination Address is the MAC 
Address of the MDR24X Client.  Used to optimize Point-to-Point communications by utilizing RF 

Acknowledgement. 

RF Delivery:  Shows if the MDR24X is configured in Broadcast mode or Addressed mode.  This is 

controlled by the System Config selection that was made when the MDR24X was configured. 

Firmware Version:

  

Displays the MDR24X’s firmware version. 

MAC Address:  A unique 6 Byte, IEEE 802.3 Ethernet address assigned by Black Box to each 

MDR24X. 

 

4.1.2

 

Optional Settings 

RTS Enable:  Enables the Request To Send control line.  When enabled, enables Hardware Flow 

Control. Refer to Section 2.3 Hardware Flow Control. 

Full Duplex:  This mode restricts Client radios to transmitting on odd numbered frequency hop 

bins and the Server to even numbered frequency hop bins.  Though the RF hardware is still 
technically half duplex, it makes the transceiver seem full duplex.  This can cause overall 

throughputs to be cut in half.  Note:  All transceivers on the same network must have the same 

setting for Full Duplex.  

 

4.1.3

 

PC Settings 

Port:  On startup, the software will search the Windows Registry to locate all serial 

communications ports.  It will designate each port it finds by displaying the full Windows identifier 
for the port.  Select the port that is connected to the MDR24X unit. 

Baud Rate:  Must be equal to the Interface Baud Rate setting of the MDR24X unit that is to be 
configured. 

4.1.4

 

Additional Features 

Read/Write with AT Commands 
When enabled, the software will use AT Commands for its read/write EEPROM functions instead 

of the standard configuration commands.  This box should be checked at all times unless Pin 15 
(CMD/DATA) is pulled Logic Low or the Program/Normal switch is set to Program Mode. 

Summary of Contents for MDR24x

Page 1: ...eless 2 4GHz Modem User s Manual Version 1 1 1000 Park Drive Lawrence PA 15055 1018 Website www blackbox com Email info blackbox com Order Toll Free in the US Call 877 877 BBOX Outside the US call 724...

Page 2: ...tion regarding the information set forth herein BLACK BOX reserves the right to change specifications at any time and without notice BLACK BOX products are intended for use in normal commercial applic...

Page 3: ...uirements for mobile transmitting devices this equipment must be professionally installed such that the end user is prevented from replacing the antenna with a non approved antenna The end user should...

Page 4: ...ARK NOT DEFINED 4 2 1 ConnexLink Settings 15 4 2 2 Optional Settings 16 4 2 3 PC Settings 16 4 2 4 Additional Features 16 4 3 PROGRAMMING THE MDR24X UNITS 18 5 TROUBLESHOOTING 19 Figures Figure 1 RS 2...

Page 5: ...pattern applied to all the transceivers in the same network A distinct hopping pattern is provided for each Channel Number thereby allowing multiple networks to co exist in the same area without inter...

Page 6: ...cy band RF Technology 2402 2478MHz FHSS Supported Network Topologies Point to Point Point to Multipoint Channels 40 US Canada Europe 20 France Security One byte System ID ANTENNA RF Connector RPSMA Ja...

Page 7: ...ceivers offer performance improvements over a standard cabled link Distance and multipoint communications are greatly enhanced A selection of RS 232 RS 485 can be made when ordering the MDR24Xs Figure...

Page 8: ...dard power is applied through the power connector Alternative power is available via the terminal block pins Pin Description Input Output 1 DCD O 2 TxD O 3 RxD I 4 DSR O 5 GND 6 DTR I 7 CTS O 8 RTS I...

Page 9: ...Reverse Polarity 0 000 0 375 0 000 0 536 0 060 9 Pin Male D Connector Power Jack w 0 100 dia pin and 0 250 opening pin is PWR 0 538 J3 J4 2 375 2 750 4 500 4 750 2 000 0 150 dia mounting holes 4 plac...

Page 10: ...cable is required The null modem simply swaps pins to convert a DCE to a DTE and vice versa A null modem cable can be provided with the MDR24X on request The MDR24X transceivers support the following...

Page 11: ...tive with respect to common RS 232 has numerous handshaking lines primarily used with modems and also specifies a communications protocol Figure 5 RS 232 Male Female Connector Pin out RS 232 DB9 Femal...

Page 12: ...network The MDR24X implements a RS 485 2 wire Half Duplex multi drop interface Typically a RS 485 bus will consist of a master and several slaves The nodes will have unique addresses and can send add...

Page 13: ...end data while the MDR24X buffer is full that data will be discarded To avoid this situation the MDR24X will de assert CTS as a warning that the buffer is filling The host device should stop sending d...

Page 14: ...single communications cable A point to point link might be used to connect a PLC to a remote monitoring station Figure 8 Point to Point Network 3 2 Point to Multipoint Point to Multipoint systems hav...

Page 15: ...d Rate setting of its host device Random Back Off In an asynchronous network where any node can talk at any time the MDR24X can be programmed to use Random Back Off to mitigate the RF Link If two node...

Page 16: ...tem Config selection that was made when the MDR24X was configured Firmware Version Displays the MDR24X s firmware version MAC Address A unique 6 Byte IEEE 802 3 Ethernet address assigned by Black Box...

Page 17: ...eviously known working configuration The first time that a radio is read with Auto Archive enabled will be stored as the Original Configuration Settings with the date and time the record was created S...

Page 18: ...to match specific serial settings If the Interface Baud Rate of the MDR24X unit is changed as described in Section 4 2 Changing MDR24X Settings then PC Setting Baud Rate must be set to the same Baud R...

Page 19: ...received 1 Verify that the baud rate of the MDR24X matches that of the MDR24X host device Client s Link LED does not come on 1 Make sure the unit is connected to power 2 Cycle power to the radio 3 Ver...

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