User manual V5 Bluetooth
Contents
1. by the reader to the PC to an application running under Windows at the same time as a display in the RealTrace Terminal window Remember to open the application on the screen before starting to send data Connection Menu In the event of a break in communication between the PC and the reader just wait 15 seconds at most to re establish the connection automatically The time remaining before automatic reconnection is displayed in the window at the bottom right Of course for re connection to be possible the reader must be switched on and within a perimeter of 10 meters or so of the PC which must also be in operation Option Menu The Display all the data section can be used for modifying the screen display of data sent by the reader If this section is selected all the characters received will be displayed i e order number type of transponder EM4102 FDXA FDXB HDX chip identifier number and CRC If the section entitled Display all the data is not selected only the order number and the login will be displayed In the event of installation or operation problems Understanding how Bluetooth modules work If the Bluetooth technology is standardized the Bluetooth drivers and user software specific to your hardware PC PDA Smartphone USB keys etc will always be different Accordingly you will need to reconfigure Your Bluetooth When the communication begins if you are asked for an access code it means that2. conduct another search and re match the devices In the same way when the RealTrace reader goes out after being on standby for a few minutes to save on the 9 V battery power communication will be cut off In these two cases the communication loss is linked to the Bluetooth operating technology and the Windows Operating System The Realtrace terminal BT software handles this drawback and allows easy automatic recovery of communication between the PC and the RFID reader Notes 1 As far as the loss of communication with PDAs equipped with Bluetooth are concerned unfortunately we cannot supply any precise information because the operating mode depends on the Bluetooth drivers incorporated into the PDA and this makes each device different 2 In theory with a PC running Windows XP it is possible to set up dialogue with 4 Blutetooth petSCAN readers since each BT module built into the reader has a different number Initial setup of the RealTrace Terminal software Install the software on your PC then go to File then Properties and enter the number of the communication port assigned to Bluetooth as well as the following data bits per second 9600 data bits stop bits 1 parity none flow control none Use of the RealTrace Terminal software File Menu The Save Delete Print and Quit functions are conventional The Link to an application function when selected is used for linking the data sent
3. in the Bluetooth configuration of your PC you need to look for the secure connection menu and deactivate this function If you want to preserve this feature on each new communication you need to enter an access code in the present case 0000 When the Bluetooth feature of the reader is on switch down the module is in the discoverable mode meaning that if it is a perimeter of around ten meters or so of the PC the Bluetooth search feature will discover it and it will appear on your screen as Petscan RT 100 The two Bluetooth modules will then be matched automatically and be able to exchange data If the communication gets broken off extinguishing of reader exit out of communication perimeter approximately 10 meters it will be necessary to start the search procedure over to associate the two Bluetooth modules However the use of the RealTrace Terminal software will enable you to reestablish communication after a maximum of 15 seconds obviously as long as it is the same reader that is trying to reconnect to the PC The Bluetooth standard stipulates that each BT module must have a different number The transmission of this number during mutual recognition of the BT modules is transparent to the user The use of data received by the PC via its Bluetooth feature or an RS 232 DB9 cable PetScan RT100 V5 sends its identifiers to the PC to which it is connected either via the RS232 cable or via its wireless link Bluetooth PetScan does n
4. Real Trace Manual for petSCAN V5 Bluetooth The V5 version of the petSCAN has a switch mounted on the left of the device The switch turns the Bluetooth feature on or off as needed to save on the power coming from the rechargeable battery The reader could operate with a 9V alkali battery but because of the relatively high consumption of the Bluetooth module we strongly advise using a NiMH rechargeable cell available in the same size as the original battery When the switch is down I the Bluetooth module is switched on and allows communication with a peripheral PC PDA Smartphone etc equipped with Bluetooth transmission Outside of transmission times it is essential to move the switch to the high position O to reduce the consumption of the reader BlueTooth RealTrace Terminal This software tool is supplied free of charge to all RFID Realtrace RT 100 V5 Bluetooth users who request it It automatically re establishes Bluetooth communication between a PC running Windows and the RFID RealTrace reader if the latter is interrupted because of the excessive distance to the PC more than 10 15m or the automatic extinguishing of the reader You will see that once communication has been established between a PC and the RealTrace reader the two previously matched units will remain connected as long as they are ten or so meters apart Beyond this distance communication may be interrupted and to resume transmission it will normally be necessary to
5. bed below The JAVA applet on the http www zorc breitbandkatze de crc html website enables you to also calculate the control word Previously the fields had to be correctly completed before making the CRC calculation and a check made that the control word is equal to OXESCC or the 123456789 character string Function that calculates CRC CCITT 16 bits INPUT unsigned char inbuffer 8 bits input vector over which CRC checksum is calculated must termined by 0x00 OUTPUT unsigned int 16 bits return of crc_ccitt checksum roeaaa OVERVIEW Width 16 bits Truncated polynomial 0x1021 Initial value OXFFFF No XOR is performed on the output CRC DESCRIPTION Computing a POLY number from the cre equation Cre s are usually expressed as an polynomial expression such as i x16 x12 x 5 1 CHECK ha OxESCC This is the checksum for the ascii string 123456789 EXAMPLE http www zorc breitbandkatze de crc html define crc_poly 0x1021 Polynome du CRC CCITT 16Bits unsigned int crc_ccitt16 unsigned char inbuffer unsigned int crc_checksum Oxffff unsigned char ch char i xor_flag while inbuffer 0 ch inbuffer for i 0 i lt 8 i xor_flag cre_checksum amp 0x8000 1 0 crc_checksum crc_checksum lt lt 1 if ch amp 0x80 crc_checksum if xor_flag crc_checksu
6. e reader only has a serial link to a jack DB9 type cable To connect the reader to a USB port it is necessary to obtain an RS232 USB adapter as Keyspan or Trendnet SU9 type Self sufficiency of PetSCAN V5 reader with 9V alkaline battery Tag reader 20s display 120s gt Number of reading operations 300 350 Self sufficiency of PetSCAN V5 Bluetooth reader with 8 4V 27 mA alkaline battery Tag reader 20s display 120s Bluetooth operating two hours Number of reading operations 60 to 80 Duration two hours This data is deliberately pessimistic and the operating time may be increased considerably x 3 by turning off the Bluetooth feature when it is not being used by turning off the reader by continuously pressing the lighting button when the display of the tag number on the display is no longer needed
7. m crc_checksum crce_poly ch ch lt lt 1 for i 0 i lt 16 i xor_flag cre_checksum amp 0x8000 1 0 crc_checksum crc_checksum lt lt 1 if xor_flag crc_checksum crc_checksum crc_poly return crc_checksum CRC parameters CRC order 1 64 16 CRC polynom hex 1021 Initial value hex FFFF nondirect direct Final XOR value hex 0 clear __CRC CCITI CRC 16 CRC 32 Data sequence 123456789 clear Result E5CC hex 9 data bytes E reverse data bytes reverse CRC result before Final XOR The specifications of the Bluetooth module integrated into petSCAN Consumption of reader BT module depending on its use 1 in discoverable mode the average current is 23 mA 2 in connected mode with transmission of 1 character every 20 seconds the average current is 8 5 mA This automatic transmission is managed by petSCAN and makes it possible to maintain a link between the reader and the PC with character transmission the average current is 20 mA Note the relatively high consumption of the Bluetooth module means incorporating a switch into the V5 model in order to switch out the function when its use is not necessary Although the use of batteries is totally acceptable to run petSCAN standard V5 it is highly advisable to use high capacity rechargeable batteries 250 270mA with the Bluetooth petSCAN V5 Connection of petSCAN V5 standard to a USB port At present th
8. ot wait to receive an order or an acknowledgement from the PC Hardware configuration The serial port for reading the data is configured as follows 9600 bauds 8 bits 1 start bit 1 stop bit non parity and no flow control You must authorize line feeds to visualize the frames using the hyperterminal click on properties in the file menu Go to the parameters and then click on ASCII Configuration Configuration ASCII Emission ASCII C Envoyer les fins de ligne avec saut de ligne C Reproduire localement les caract res entr s D lai de la ligne 0 millisecondes D lai de caract re 0 millisecondes R ception ASCII gn _ Forcer les donn es entrantes en ASCII 7 bits Retour automatique 4 la ligne The circled box above must be ticked Description of the frame transmitted each time a transponder is read The PetScan transmits the following frame to the PC after each valid reading Octet at the Type of 8 The 16 Separation CRC CCITT Carriage start of the character or character or of octet control word 16 Return frame octet chip octet chip e ASCII format bits octet U x55 identifier on 4 characters x0D Data used to calculate the CRC Tips the developers of software associated with PetScan must use the head and separation characters to separate the information transmitted by PetScan calculate a control word with the da
9. ta received and compare it to the word transmitted by the PetScan to validate the information see hereafter for the CRC CCITT 16 bit calculation algorithm Description of the frames emitted when reading the databases PetSCAN memory option If a PetScan reader has a memory option when Press SCAN to send is displayed the reader is ready to transmit the identifiers stored in the memory The PetScan displays Sending during transmission and the reader offers the user the option of deleting the content of its database at the end of the transmission Format of the frames transmitted to the PC the frame which is transmitted on each reading of a transponder is preceded by a header octet xAA its 4 character registration number in the memory and a separation character Start of 4 character Separation Start of The type of The 16 frame registration octet informatio 8 character character octet number n object or octet or octet xAA U 1x55 chip chip identifier Separation of octet nn CRC CCITT control word 16 ASCII format bits on 4 characters Carriag e return octet x0D lt Data used to calculate the CRC Algorithm for calculating aCRC CCITT 16bit control word The C ANSI function s source code enabling a control word to be calculated from a string of characters terminating with the character x00 is descri
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