background image

http://www.wenshing.com.tw ; http://www.rf.net.tw                                                                         

 

RD-485

 

Instruction Manual P.13 

Directive location information I   

(frequency settings) 

Directive location information J   

(frequency settings) 

BIT7 

BIT6 

BIT5 

BIT4 

BIT3 

BIT2 

BIT1 

BIT0 

Directive location information K   

(frequency settings) 

Directive location information L   

(frequency settings) 

BIT7 

BIT6 

BIT5 

BIT4 

BIT3 

BIT2 

BIT1 

BIT0 

Directive location information M 

(RD-485 ID) 

Directive location information N 

(RD-485 ID) 

Directive location information O 

(packet length) 

Directive location information P   

(packet length) 

 

Command Communication Mode

 

  Read equipment parameters of command:   

Send value = 0x1234567868ACFD 
Return value= 03 01 69 54 02 00 
03=wireless transmission rate (9600 Kbps), 01 69 54= equipment frequency 
(925 MHz), 02 = equipment ID code (2), 00= Un-constant pack length.   

 

  Read RSSI parameters of command:   

Send value = 0 x1234567868ACFE 
Return value = BC   
BC = RSSI value 

 

  Sleep Mode parameters of command:   

Send value = 0 x1234567868ACFF   
After the equipment sent immediately into Sleep Mode as long as the serial 
received  information  will  be  automatically  wake-up  equipment  into  Standby 
Mode. 

 

  Point-to-point transmission mode parameters of command:   

Send value = 0 x1234567868AC0000SSTTDDDDDDDDD   
SS is on behalf of the RD-485 for the ID number, 
TT is on behalf of the ID number of receiver. 
DDDD  is  on  behalf  of  data  (not  set  this  mode,  RD-485  are  broadcasting 
operation.) 

 

WENSHING 

Confidential 

Do 

Not 

Distribution

Summary of Contents for RD-485

Page 1: ...RD 485 868 928MHz Wireless Modem Controller System Version History Version Date Changes V1 01 Jan 15 2008 1st Edition V1 02 Aug 20 2008 2nd Edition V1 03 Oct 27 2008 3rd Edition V1 04 Jan 16 2009 4th...

Page 2: ...8 Set into the model 8 After set complete 8 Link LED lights flashing Work LED light goes on 8 Application 9 Example 1 9 Example 2 9 Example 3 9 Example 4 10 Example 5 10 Interface Description 10 Powe...

Page 3: ...onsumers in contravention of this statement recorded note of the operation I am afraid our company could not shoulder any responsibility Products are defective the Company will be responsible for free...

Page 4: ...as monitoring scheduling data transmission industrial control wireless meter reading system It can also direct as end products information transmission and the use of a wide range RD 485 use TRW V4B D...

Page 5: ...z transceiver channels including the reception circuit firing circuit Synthesis circuit Memory Main memory used is to store the current operating frequency and RF transmission rate Power Circuit It ca...

Page 6: ...253 bytes 1 packet Working Temperature 10 C 70 C Storage Temperature 30 C 95 C Consumption Current 31mA I O Port Open 5mA I O Port Close Sleep Mode Operating Voltage 15V Consumption Current 51mA I O...

Page 7: ...data RS485 RX indicator will light that flashes for 1 time Work light It will keep flash during normal work It will not flash during data sending or data receiving in the process It will keep flash af...

Page 8: ...set complete Link LED and Work LED lights will be flashing alternately for 5 times Link LED lights flashing Work LED light goes on a representative of the frequency effect is working now Work LED tur...

Page 9: ...ission network functions Example 2 Computer and industrial control through RS232 RS485 interface link to RD 485 and it can be remote control and data monitoring functions Example 3 Industrial control...

Page 10: ...control authority Interface Description Power RD 485 can be used AC DC on supply power The voltage is 9V 28V In order to guarantee the module is working normally the DC power should have the output ab...

Page 11: ...into set mode Work LED lights flash Link LED lights out and then PC or micro controller may be RS485 or RS232 interface under instructions to amend RD 485 wireless transmission frequency and wireless...

Page 12: ...0MHz RD 485 ID code is 10 doesn t fix packet length BIT47 BIT46 BIT45 BIT44 BIT43 BIT42 BIT41 BIT40 0 0 0 1 0 0 1 0 Location information instructions A fixed leader script Location information instruc...

Page 13: ...command Send value 0x1234567868ACFD Return value 03 01 69 54 02 00 03 wireless transmission rate 9600 Kbps 01 69 54 equipment frequency 925 MHz 02 equipment ID code 2 00 Un constant pack length Read...

Page 14: ...onnect the power cord and a good port and power lines Press the button set into the mode of all groups within the RD 485 RF work rate and the frequency set to work otherwise it will not be able to sen...

Page 15: ...www wenshing com tw http www rf net tw RD 485 Instruction Manual P 15 Wiring Boost Install Antenna Standard Antenna Sucker Antenna W E N S H I N G C o n f i d e n t i a l D o N o t D i s t r i b u t i...

Page 16: ...ot allow information over 253bytes to send a maximum of 251 bytes Q Whether or not the information at the first time with information on the second intermediate waiting for the short time interval at...

Page 17: ...interfering with the characteristic FCC Consistent Declaration U S A Only Attention FCC rule regulation modified and changed must allowed by WENSHING Electronics company otherwise that would make you...

Reviews: