DESTINY NETWORKING MANUAL YieldPoint Inc. May 2006
Contents
1. C 12 42 PM ww Configuring an R5485 E Figure 17 Output for file yp 01 03 04 01 21 MasterID 01 SlaveID 03 PortID 04 SensorID 01 SensorType 21 DETECT GMM The output shows a steady temperature channel 1 between 20 and 21 5C and a displacement that jumps from 16 66 to 54 20 between 6 30pm and 7 00pm on May 18 2006 DESTINY IP User Manual May 2006 2 E logfile Notepad File Edit Format View Help OHHH HHH HH HH 19 05 2006 11 01 15 AM Successful data transfer sequence from Master ID 07 gt HHHH CCCII UHHH WHH WWW HHW WWW W HHH EEO HH He 19 05 2006 11 01 33 AM Device server status OK on Master ID OL OHHH HHH HW WW TCTIRCTIRCICA 19 05 2006 11 30 27 AM Device server status OK on Master ID OL HOHE UHHH HHUA CCCII CCCII TCI 19 05 2006 11 30 44 AM Successful data transfer sequence from Master ID O1 OHHH HUH HOHE HHH HOHE HHA WW 19 05 2006 11 31 04 AM Device server status OK on Master ID 07 HOHE HOHE HHO UHHH TCI TIC 19 05 2006 11 31 17 AM Successful data transfer sequence from Master ID 07 HOHE UHHH COCA EEO TRITICI 19 05 2006 11 31 47 AM Device server status OK on Master ID 0l HOHE UHHH HHO CAT UHHH HHO HHH ee 19 05 2006 12 00 22 PM Device server status OK on Master ID 01 OHHH HOHE HHH HEE HHH HOHE HOH WW 19 05 2006 12 00 42 PM Successful data transfer sequence from Master ID O1 SHOEI UHHH HHH OEE UHH HHO HUH TCR 19 05 2006 12 01 03 PM Device server stat2. SPN change successful Master ID Connected with TCP 030100000001FB SDP change successful 020100000001FC Rebooting DS OK 010100000001FD A OK A 040100000001FA A 0303040B6431371F OK 030300480002BO0 030304002D0015B4 0303004 60002B2 0303040B86156FE1 0303000 COO02EC 03030400010015EO0 Modbus Messages Archive Data Master ID Slave ID 24 Hour Time p 24hr Archive Get Archive Data f amp NEWEST DESTINYTC Th Documenti Microsof CJ Documenti Microsof amp 9 C 11 34 PM Figure 7 The Messaging Tab 2 2 1 2 Device Server Messaging Function Codes 4 message functions exist M Retrieve the SlaveMap N Retrieve Data from a specified Slave D Set Date on the Master s clock T Set Time on the Masters clock M Retrieve the SlaveMap indicating the population of Slaves Example Query M070099CRLF The MasterID chars3 4 is 07 and the 99 chars 7 8 indicate that the current i e latest SlaveMap 1s retrieved DESTINY IP User Manual May 2006 11 24hr Archived Maps Archived SlaveMaps from the Master are retrieved using the M command with 00 23 for chars 7 8 specifying the hour 002midnight 1800 6pm for which the archived map should be returned These archived maps take account of whether Slaves have been added or deleted from a network over a 24hr period Example Response M070099CRLF echo original command 1100011100000000C RLF The resp
3. 04 01 21 21 19 29 01 03 04 01 21 20 06 30 01 03 04 01 21 20 52 31 01 03 04 01 21 20 52 32 01 03 04 01 21 20 31 33 01 03 04 01 21 21 20 34 01 03 04 01 21 20 18 35 01 03 04 01 21 20 12 36 01 03 04 01 21 20 05 37 01 03 04 01 21 20 57 38 01 03 04 01 21 20 1 42 39 01 03 04 01 21 20 46 40 01 03 04 01 21 20 43 41 01 03 04 01 21 20 39 42 01 03 04 01 21 20 v o uyu u _ o ee u o a a u o v 2006 05 19 2006 05 19 2006 05 19 29 43 01 03 04 01 21 20 23 44 01 03 04 01 21 20 24 45 01 03 04 01 21 20 NNNNNNNNNNNNNNNNNNNN Oh OY OO cO c OO Oc CO CO Cn OD ODOODOUODODODOODOOOdoOH HBPOOOOOOOO Ow0 0 QD ODDDODIDrDOr DO0OrOrIDIODOrDOOrDOOrDrOOrmDr mDrOrDrOrmDr OrDrDOrtdUOrtuD QD ODODIODrIDrODrODIDOrDIDOrD rIUD OmDrOOOrIO DrIO DrDOrDtDOd qU t QD tC C C C C C C C C C C C C C C C C C C C C C C C C C C C C D CO QD tC C C C C C C C C C C C C C C C C C C C C C C C D C C C C D CO QD CO C C QD Q D C C C CO D C C C C QD D C C C D QD ID D D D DO DO OO QD a C Q Q OQ D D CO Q OQ OD D C C CO QD D C C C D QD ID IO OD OD O ODDO OD a a oloi oloi a OS oloi oloi oloi oioi niooo olol ol olol oi nia PI OOOOOOOO0O00O0o0OoOoo0oono0ooO0ooooooooooooooo DESTINY IP vp 01 03 04 01 21
4. 2006 5 12 8 0 23 7 1 2 1 21 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 CRLF 2006 5 12 8 0 23 7 1 3 1 21 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 CRLF 2006 5 12 8 0 23 7 1 4 1 21 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 CRLF This is so called TestMode output and can be used to determine whether the Ethernet network is operating correctly and without errors To do this The Master should simply be attached using the RJ45 plug Note It may be necessary to complete a full Modbus cycle LOOPs 1 and 2 above after unplugging the Master from its network for the Master to enter TestMode DESTINY IP User Manual May 2006 20 DESTINY IP Sensor Text File ID Configuration 01 03 01 01 21 01 03 02 01 21 01 03 03 01 21 01 03 04 01 21 07 01 01 01 21 07 01 04 01 21 07 01 04 45 21 07 50 01 300 100 07 50 02 301 100 07 50 03 302 100 07 50 04 303 100 Delete Text File ID From Table Pd DELETE Record Count Last Update 18 05 2006 6 32 13 PM 18 05 2006 6 00 28 PM 19 05 2006 12 00 39 PM 19 05 2006 12 00 42 PM 16 05 2006 5 13 06 PM 19 05 2006 9 01 05 AM 18 05 2006 9 25 56 PM 19 05 2006 12 01 16 PM 19 05 2006 12 01 16 PM 19 05 2006 12 01 16 PM 19 05 2006 12 01 16 PM Date Created 17 05 2006 7 30 29 PM 17 05 2006 1 12 00 AM 16 05 2006 11 30 28 PM 17 05 2006 5 49 34 PM 16 05 2006 4 55 49 PM 18 05 2006 9 31 08 PM 18 05 2006 9 25 56 PM 12 05 2006 11 13 05 PM 12 05 2006 10 36 40 PM 12 05 2006
5. The second channel 5374 is displacement and in mm according to Disp 100 100 2 5374 100 100 52 74mm The transformations are necessary to avoid the overhead of carrying float type variable around on the network and are automatically applied by the DESTINY IP software DESTINY IP User Manual May 2006 12 DESTINY IP fe x Local Settings TCP Winsock State Local IP 192 168 2 13 Port No 2017 Status Connected E N O U M o Device Server Messaging Modbus Messaging Current Master ID 01 jor l Log e W010099 M010099 echo M Command 0010000000000000 N010399 Port ID 1 N010399 echo p di 2006 5 12 23 42 41 1 3 1 1 21 2950 5487 0 0 0 0 0 0 0 0 2006 5 12 23 42 42 1 3 2 0 0 0 0 0 0 0 0 0 0 0 0 N Command 2006 5 12 23 42 43 1 3 3 0 0 0 0 0 0 0 0 0 0 0 0 12006 5 12 23 42 44 1 3 4 45 21 2916 12599 0 0 0 0 040 0 0 Port ID 4 D060512 D Command i D060512 echo T234246 4 1234246 echo T Command v Archive Data Master ID Slave ID Get Archive Data tg Start e wi nic amp f amp NEWEST DESTINYTC i Documenti Microsof amp 9 C 11 42 PM Figure 8 A typical sequence of DS messages The M command is used first to determine the population of Slaves existing on the network Then the N command is used to retrieve data from existing Slaves Finally commands D and T are issued to synchronize the Master s clock D Command Set Master Date Example Query D06
6. JB 10 57 PM Figure 11 The Configuration Environment 2 3 1 Add Delete a Master Before DESTINY IP can communicate with a Master the MasterID and IP address of its Device Server must be added as shown in Figure 11 2 3 2 Configuring a Master s Device Server DS Manager DS Manager is used to configure the DS The DS Manager will autodiscover all the Device Servers connected to the network as it is opened Figure 11 The additional Tabs on the settings form Figures 14 and 15 control the Serial Settings for communications between the Master and Device server and how the data sent using TCP is packetized The user should not need to change these settings DESTINY IP User Manual May 2006 17 DESTINY IP Configuration Add Delete A Master Connect To A Specific Master Device Server m Connect using Enter or Select Master ID Number 01 x Master ID 01 UDP C TCP Enter the I P Address 192 1 68 2 35 IP address 192 1 68 2 35 Change IP Buzz ADD DELETE DS Manager V3 6 6 Access modes Local Device Servers suto discovery by broadcast b Refresh Config Device Servers Status MAC IP wner Device Settings _ Z 0 202 0 0 20 75 192 168 2 35 local MASTERO1 0 202 0 0 26 129 2007 N MO SUD 02020026129 192168222 local MASTERO E A0 202 0 0 20 75 2008 N MC Routing Status ou
7. User Manual May 2006 28 JL Stop M Pos C000 TRIGGER i Vide Slope Source CHI Mode Coupling CHi 2 00 CH2 200v M 25 0 us CH1 1 52 Figure 2 The signals on the 2 wires of a balanced system are ideally opposite Although RS 485 can be successfully transmitted using multiple types of media it should be used with wiring commonly called twisted pair What Is Twisted Pair and Why Is It Used As its name implies a twisted pair is simply a pair of wires that are of equal length and are twisted together Using an RS 485 compliant transmitter with twisted pair wire reduces two major sources of problems for designers of high speed long distance networks radiated EMI and received EMI Radiated EMI As shown in Figure 3 high frequency components are present whenever fast edges are used in transmitting information These fast edges are necessary at the higher data rates that RS 485 is capable of transmitting Mdti dre Figure 3 Waveform of a 125kHz square wave and its FFT plot The resultant high frequency components of these fast edges coupled with long wires can have the effect of radiating EMI A balanced system used with twisted pair wire reduces this effect by trying to make the system an inefficient radiator It works on a very simple principle As the signals on the wires are equal but opposite the radiated signals from each wire will also tend to be equal but opposite This has the effect of
8. impedance of the cable there is still cable after the resistor This extra cable causes a mismatch and therefore reflections The second mismatch is at the end of the unterminated cable leading to further reflections oil FEET 10 FEET t qu HAS ac TWISTED PAIR U NTERNINATED CABLE AT THE END 2 DATA IH If H J TRANSMITTER INCORRECTLY TERMINATED DATA OUT AT SAME LOCATION OTHER THAW THE EMD OF THE CABLE RECEIVER DESTINY IP User Manual May 2006 34 Tek JL Tiid M Pec TED One 2 Tiigid M Pos Tune CH1 I i ae BY Linii Lil TMH Votre Diy EES Probe Lu kivert chi e ie M i i TEN OC Figure 11 An RS 485 network with the termination resistor placed at the wrong location top and its resultant waveform left compared to a properly terminated network right Multiple Cables In Figure 12 there are multiple problems with the layout The first problem is that RS 485 drivers are designed to drive only a single properly terminated twisted pair Here the transmitters are each driving four twisted pairs in parallel This means that the required minimum logic levels cannot be guaranteed In addition to the heavy loading there is an impedance mismatch at the point where multiple cables are connected Impedance mismatches again mean reflections and therefore signal distortions Figure 12 An RS 485 network that uses multiple twisted pairs incorrectly Long Stubs In Figure 13 the cable is p
9. memory This sequence repeats continually until at 30min intervals on the hr and 1 2 hr the DESTINY IP application running on the PC server sends a request for the data to be downloaded from the Master see DS messaging above 2 3 The Configuration Environment the Configuration Tab YieldPoint uses a 3 party Tibbo Technology Inc IP device server in each DESTINY Master IP Full information and specificationss on this device can be found at the URLs http www tibbo com ds202 php http www tibbo com tdst_dsman php The configuration environment provides the functionality to 1 Add Remove Masters ii Configure a device server within a Master iii connect to a specific Master and send commands from the Command line DESTINY IP User Manual May 2006 16 DESTINY IP fe x Configuration Datalogging Add Delete A Master Connect To A Specific Master Device Server Connect using Enter or Select Master ID Number 07 X Master ID 07 x UDP c Enter the I P Address 192 168 2 22 IP address fi 92 168 2 22 Change IP Buzz an x ADD DELETE Command Line NEN SEND Config Device Servers A0 202 0 0 26 129 2007 N MO SS f 40 202 0 0 20 75 2008 N MC DS Manager DS Replies amp OK R Rejected D Denied F Failed C Error te Start E Aig fm NEWEST DESTINYT fm NEWEST DESTINYT ey DestinyTCP Micros Ul Documenti Micros Cl Documenti Micros Th Documenti Micros
10. placed at the extreme end or ends of a cable Figure 4 The value of the terminating resistor is ideally the same value as the characteristic impedance of the cable PROPER TERMINATION LOCATION RT Zo LOCATION AT Zn TWISTED PAIR WITH CHARAGTERISTICIMPEDENCE FZg Ry 120n Ay 1200 EXAMPLE 9 2120252 Figure 4 Termination resistors should be the same value of the characteristic impedance of the twisted pair and should be placed at the far ends of the cable When the termination resistance isn t the same value as the characteristic impedance of the wiring reflections will occur as the signal is traveling down the cable This is governed by the equation Rt Zo Zo Rt where Zo is the DESTINY IP User Manual May 2006 30 impedance of the cable and Rt is the value of the terminating resistor Although some reflections are inevitable due to cable and resistor tolerances large enough mismatches can cause reflections big enough to bring about errors in the data See Figure 5 TWISTED PAIR CHAR ACTERISTIC IMFEDANCE 2121052 SPs COCO COCCI TRANSMITTER LASE1 254r Fi FEET 150 FEET CASE 2 21210 SIGHAL MEASURED AT THIS POINT DIFFERENTIALLY u rid Tiig d IM Pos T 8 dns Tek JL Miis 1 ELI CHI SOY GE 200v M 25s Figure 5 Using the circuit shown at the top the waveform on the left was obtained with a MAX3465 driving a 120 ohm twisted pair terminated with 54 ohms The waveform on the right was
11. query The data bytes contain the data collected by the Slave If an error occurs the function code is modified to indicate that the response is an error response and the data bytes contain a code that describes the error The error check field LRC check allows the master to confirm that the message contents are valid DESTINY IP User Manual May 2006 14 Query message from Master gt Dewice Address Function Code Device Address Function Code Eighi Bit Date Bytes Emor Check 4 Response message from Slave Figure 10 The Query Response cycle for Modbus 2 2 2 3 Modbus Device Address codes Eight Bit Data Bytes Error Check Slaves are addressed by SlaveIDs 01 O0F 1 15 corresponding to the addresses for each of the DESTINY Slaves on the RS485 network 2 2 2 4 Modbus Function Codes 01 Read Coil Status Returns the PortMap Slave memory location 0000 corresponding to which Ports have sensors plugged in Example Query 0101000000001 CRLF Read the PortMap for Slave01 Response 01010102 CRLF Slave01 has a sensor plugged into Port2 0002Hz0010 in binary Other codes 0003H 2001 1b indicates sensors in Ports 1 and 2 etc 03 Read a specified number of bytes from a specified memory location of a specified Slave Example Query 010300320002C2 CRLF Starting at memory location 50 Hex 0032 read two 0002 bytes i e Bytes at locations 50 and 51 Response
12. specification recommends but does not specifically dictate that this characteristic impedance be 120 ohms Recommending this impedance is necessary to calculate worst case loading and common mode voltage ranges given in the RS 485 specification The specification probably does not dictate this impedance in the interest of flexibility If for some reason 120 ohm cable cannot be used it is recommended that the worst case loading the number of transmitters and receivers that can be used and worst case common mode voltage ranges be recalculated to make sure the system under design will work Publication TSB89 has a section specifically devoted to such calculations Number of Twisted Pairs per Transmitter Now that we have a feel for the type of wire needed the question arises as to how many twisted pairs a transmitter can drive The short answer is exactly one Although it is possible for a transmitter to drive more than one twisted pair under certain circumstances this is not the intent of the specification Termination Resistors Because of the high frequencies and the distances involved proper attention must be paid to transmission line effects However a thorough discussion of transmission line effects and proper termination techniques are well beyond the scope of this application note With this in mind terminations will be briefly discussed in their simplest form as they relate to RS 485 A terminating resistor 1s simply a resistor that is
13. transportation and other charges to the factory Units out of warranty returned for repair test and or recalibration are handled on a time and material basis If requested or if costs exceed 5046 of current list price YieldPoint Inc advises the customer prior to making the repairs Such repairs are performed at the customer s expense Typical test recalibration and repairs are 25 of the instrument s current list price Transportation charges both ways are at the customer s expense Please be sure all returns are shipped with the following information included I Your company Name with Billing and Shipping Addresses 2 A complete description of your problem or re calibration data 3 The contact person at your company with their telephone and facsimile numbers 4 Non Warranty returns additionally need your Purchase Order Number Please pack your returned instruments in their original shipping cartons or in equivalent strong protective shipping cartons DESTINY IP User Manual May 2006 2 Table of Contents do Destiny ae Hardware E DESY Magee 13 DESTINY Slave 0 00 0 000000 5 14 Network Design Considerations 5 15 Network Construction Physical 6 15 1 Cabing 0 6 153 Termination o 8 154 l 5 TCP et with a Device Server DS Addresing eee DESTIN Y IP PC Server Software 5 2 2 1 1 2 2 1 2 2 2 2 2 2 2 1 2222 2 2 2 3 2 2 2 4 2 2 2
14. 0 255 Sensor Type Code 21 GMM etc which can be used to confirm that the sensor has been plugged into the correct Port DESTINY IP User Manual May 2006 9 ag 3885 T ei Uo HE HH 1234 1234 1234 IDESTIHY DESTINY DESTIIY SAVE SLAVE DESTIMY 03 02 01 kinds Ethernet TCP JP ee ee Lr 05 UP TO 15 MIILTIDROF HUB 60 SENSORS 500 CHAHHELS u HL BERE raed Bd BESE iH ke I TE RH 228E hae 282 1234 1214 12 34 DESTINY DESTINY DESTINY SLAVE SLAVE SLAVE DESTINY 03 02 01 MASTER i Ethernet TOPs IF UF TO 15 ULTIDROP HUE 03 BO SEHSORSA EDO CHAHHELS J J es Figure 6 The Addressing hierarchy 2 DESTIN Y IP PC Server Software 2 1 Overview DESTINY IP is a PC sever application to configure monitor and manage the DESTINY network The user interface has three environments each represented by a different Tab on the main form 1 The Messaging Environment 2 The Configuration Environment 3 The Datalogging environment 2 2 Messaging Environment The Messaging Tab The Messaging environment presents the user with the real time messages being transmitted over either the Ethernet TCP IP or the RS485 Modbus networks A rudimentary ability to interpret these messages will enable to user to provide better maintenance and troubleshooting 2 2 1 Device Server DS Messaging Ethernet DS messages are sent over an Ethernet connection between the PC server and the DESTINY Master Commands e
15. 0001 F5 N015099 echo 080100000001 F 2006 5 18 13 47 46 07 50 1 300 100 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 070100000001F7 2006 5 18 13 47 46 07 50 2 301 100 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 060100000001F8 2006 5 18 13 47 46 07 50 3 302 100 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 050100000001 F9 2006 5 18 13 47 46 07 50 4 303 100 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 040100000001FA 030100000001FB D060518 020100000001 FC D060518 echo 1 010100000001 FD 11134751 T134751 echo Archive Data Master ID Slave ID 24 Hour Time Start Gy Configuring an R5485 DESTINY IP E 1 49 PM Figure 20 The TestMode data for Master 01 connected without any sensors attached STEP 6 Return to the Messaging Tab Select 01 from the pull down list under Modbus Messaging and click the Log button The DS messaging window will indicate progress as a TCP connection is established to Master 01 When the connection is complete and after a 10s delay the Modbus messaging window will start to display Modbus messages being sent and received by the Master over the RS485 bus Wait for a complete Modbus cycle 1 2mins which is indicated by an OK appearing in the Modbus Messaging textbox Click Global Poll This will retrieve the data read from the sensor plugged into Port 01 of the Slave Figure 21 This data for Port 01 will be appended
16. 010302000100155DCRLF Contents of Slave memory locations or holding registers 50 and 51 DESTINY IP User Manual May 2006 15 08 Turn on Sensors and Read Command Example Query 0108000050000F2 CRLF Reponse 0108000050000F2 CRLF Response is simply an echo of the query if the sensor is read correctly This process may take several minutes and the Red LED above the Modbus Messaging Text box will flash every 10s to indicate the application isrunning 2 2 2 5 The Function sequence A series of Query response cycles are used by a Master to obtain data from all the networked Slaves The sequence consists of two loops 1 LOOP 1 The Master sends a 01 command to each Slave 1 15 and if it does not receive a reply within Is then it assumes that no Slave with that SlaveID exists on the network so it proceeds to the next SlaveID If a response is obtained then a 08 command turn on and read all sensors is issued to the Slave that triggers a reading from each of its 4 Ports 11 LOOP 2 The Master sends a 01 command to each Slave and if it does not receive a reply within 1s then it assumes that no Slave with that SlaveID exists on the network so it proceeds to the next SlaveID If a response is obtained then a 03 command is issued to the Slave which sends data from holding registers corresponding to the reading taken in LOOP 1 Since data from the DESTINY Master is requested at specified intervals this data is stored in on board
17. 0511 CRLF Set the Date of the master s clock to 11 May 2006 Example Response D060511CRLF echo The response is based on the reading the date back from the Master s clock and indicates whether the operation was successful T Command Set Master Time Example Query T140711 CRLF Set the Time of the master s clock to 2 07 11PM Example Response T140711CRLF echo DESTINY IP User Manual May 2006 13 The response is based on the reading the time back from the Master s clock and indicates whether the operation was successful 2 2 2 Modbus Messaging RS485 This Section is not intended to provide a detailed introduction to Modbus protocol That is provided by the reference Modicon Modbus Protocol Reference Guide PI MBUS 300 Rev J provided on the CD Modbus ASCII messages travel between Master and Slaves on each RS485 network 2 2 2 1 Modbus ASCH protocol On the DESTINY RS485 network all DESTINY components operate using a 9600 8 N 1 serial interface Each 8 bit byte in a message is sent as two ASCII characters The format for each byte in ASCII mode is Coding System Hexadecimal ASCII characters 0 9 A F One hexadecimal character contained in each ASCII character of the message Bits per Byte start bit 8data bits least significant bit sent first no bit for parity stop is used Error Check Field Longitudinal Redundancy Check LRC The protocol is Modbus ASCII All messages start with a col
18. 10 43 10 PM 12 05 2006 10 30 36 PM IV Also delete associated txt file from folder View LogFile 8 DESTINY Figure 16 The Datalogging environment lists the files created and the number of records in each The final fm DestinyIP four files are created in TestMode DestinylP File Edit view Favorites Tools Help Qo Back 7 d P Search lg Folders E File and Folder Tasks Rename this file dy Move this file Destiny TCP 152 KB uninsOo0 DAT File DESTINY IP DS Manager shortcut KB uninsOo0 ww Configuring an R5485 logfile Text Document 74 KB yp 01 03 03 01 21 Text Document 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 18 2006 05 19 2006 05 19 2006 05 19 2006 05 19 07 14 01 03 04 01 21 20 59 15 01 03 04 01 21 21 59 16 01 03 04 01 21 20 31 17 01 03 04 01 21 21 03 18 01 03 04 01 21 21 46 19 01 03 04 0L 21 21 17 20 01 03 04 01 21 21 45 21 01 03 04 01 21 21 30 22 01 03 04 01 21 21 22 23 01 03 04 01 21 21 27 24 01 03 04 01 21 21 14 25 01 03 04 01 21 21 29 26 01 03 04 01 21 20 1 24 27 01 03 04 01 21 21 19 28 01 03
19. 22 4 0 Esssential Reading Goldie J Ten Ways to Bulletproof RS 485 Interfaces Copyright 1996 Reed Elsevier Inc National Semiconductor Application Note 1057 October 1996 Included on CD 4 Useful References 1 Murdock G and J Goldie AN 702 Build a direction sensing bidirectional repeater Interface Databook National Semiconductor Corp 1996 2 True K AN 808 Long transmission lines and data signal quality Interface Databook National Semiconductor Corp 1996 3 Vo J AN 903 A comparison of differential termination techniques Interface Databook National Semiconductor Corp 1996 4 Goldie J AN 847 Fail safe biasing of differential buses Interface Databook National Semiconductor Corp 1996 5 ANSI TIA EIA 422 B 1995 Electrical characteristics of balanced voltage digital interface circuits 7 Sivasothy S AN 409 Transceivers and repeaters meeting the EIA RS 485 interface standard Interface Databook DESTINY IP User Manual May 2006 27 National Semiconductor Corp 1996 Appendix 1 http pdfserv maxim ic com en an AN763 pdf Maxim Semicononductor Application Note 763 Jul 12 2001 Guidelines for Proper Wiring of an RS 485 TIA EIA 485 A Network The proper method of wiring an RS 485 network is described with recommendations for twisted pair cabling and correct location of termination resistors Received waveforms are shown for examples of proper and improper cable term
20. 4A YieldPoint Sensing the future DESTINY NEIWORKING MANUAL YieldPoint Inc May 2006 Copyright 2005 by YieldPoint Inc The Information contained herein is the exclusive property of YieldPoint Inc except as otherwise indicated and shall not be reproduced transmitted transcribed stored in a retrieval system or translated into any human or computer language in any form or by any means electronic mechanical magnetic optical chemical manual or otherwise without expressed written authorization from the company The distribution of this material outside the company may occur only as authorized by the company in writing YieldPoint hardware and software products are not designed to be used in the diagnosis and treatment of humans Windows 95 98 NT and XP are registered trademarks of Microsoft Corporation Modbus is a registered trademark of Modicon Inc The Bluetooth word mark and logos are owned by the Bluetooth SIG Inc Warranty and Service Policy Product Warranty YieldPoint Inc warrants the instruments described in this manual to be free from defects in materials and factory workmanship to the original buyer This warranty is contingent upon proper use of the equipment and does not cover equipment that has been modified or has been subjected to abusive physical or electrical stresses YieldPoint Inc agrees to repair or replace at its sole discretion any instrument that fails to perform as specified within 6 months
21. 5 2 2 3 2 3 The Configuration Environment The Configuration Tab 231 Add Delete a Master 2 3 2 Configuring a Master s Device Server 5 1 3 Connect to a Specific Master Device Server The Datalogging Environment the Datalogging Tab A l Troubleshooting The error Logfile a Getting Started An in office Network Guidelines for Proper Wiring of an RS 485 TIA EIA 485 A Network Maxim Semicononductor Application Note 763 Jul 12 2001 aeae Nn lt A NO oo W W Q2 X NINI N e m L DESTINY IP User Manual May 2006 3 1 DESTINY Networking Hardware DESTINY is an RS485 networking system that enables data from all types of digital sensors to be transmitted over long distances and interfaced with existing mine wide communications infrastructure such as Ethernet running TCP IP leaky feeder wireless and other RS485 industrial networks running a varirty of serial protocols It also provides solutions for local readout of the network by BlueTooth enabled PDA type devices and data loggers Each DESTINY network comprises a DESTINY Master located at one end of the bus and up to 15 DESTINY Slaves configured in a daisy chain configuration along a 2tp cable 1tp for 20 28Vdc GND and Itp for differential A B signals 1 1 What is RS485 Recommended Standard 485 RS 485 has become the industry s workhorse interface for multipoint differential data transmission RS 485 is uni
22. DestinyTCP M my Documenti M w Document Mi wh screen caps2 d ES DS Manager V 11 01 PM Figure 14 Serial Settings for communications between the device server and the Master These setting should not be changed C screen caps2 doc Microsoft Word E Jn 1 3 x Type a question for help Access mode Local Device Se Stat character ASCII code Stop character ASCII code Number of post characters 0 ChangelP IP zm M 21 120 1 5197 1 01851 002 1 16 1405 1 44 01 1138 1423 01 d1n 10 189 0198 17 156 1 e HOME u i All Page 2 Sec 1 2 2 At 22 5cm Ln 5 Col 1 REC TRK EXT OVR English U 5 Gy ela vs mn NEWEST DESTI fm NEWEST DESTI amp y DestinyTCP M Th Documenti M ly Documenti Mi Ty screen caps2 d X DS Manager amp JE 11 02 PM Figure 15 Packetization Settings These should not be changed 2 3 3 Connect to a specific Master Device Manager This functionality allows UDP commands to be sent directly to the DS in the selected Master For example clicking on Buzz see Figure 11 will cause the DS status LEDs to flash rapidly 3 times A wide range of other commands can be enetered at the command line and full deails are provided on the DS manual included with the CD DESTINY IP User Manual May 2006 19 2 4 The Datalogging environment The Datalogging Tab Data from the DESTINY network is automatical
23. TTER RECEIVER M IM PEDAMHCE M Figure 6 A one transmitter one receiver RS 485 network One Transmitter Multiple Receivers Figure 7 shows a one transmitter multiple receivers network Here it is important to keep the distances from the twisted pair to the receivers as short as possible TERMIHATIMG RESISTORS TRANSMITTER TWISTED i Rr p DATA IH Y k By AT KEEP AS SHORT AS CHARA a POSSIBLE DATA QUT DATA OUT IMPEDEHLE g RECEIVER 1 REGEMER n Figure 7 A one transmitter multiple receivers RS 485 network Two Transceivers Figure 8 shows a two transceivers network DESTINY IP User Manual May 2006 32 TERMINATING RESISTOR TERMINATING RESISTOR AT lt 0 TWISTED PAIR MERI A CHARACTERISTIC IMFEDENCE g TRANSCEIVER TRANS CEMER Figure 8 A two transceivers RS 485 network Multiple Transceivers Figure 9 shows a multiple transceivers network As in the one transmitter and multiple receivers example it is important to keep the distances from the twisted pair to the receivers as short as possible CHARACTERISTIC TERMINATING RESISTOR IMIPEDENGE Zn TERMINATING RESISTOR is TWISTED PAIR RT o i g r ee Rr DATA IH DATA IH DATA IH DATA OUT DATA OUT DATA OUT Ec Lis c Cn ro c wo med o a LLI C Lu A KEEP AS SHORT AS PUSSIBLE TRANSCEIVER 1 TRANSCEIVER TRANS CEMER n Figure 9 A multiple transceivers RS 485 network Examp
24. The other end of the bus far end salve should be terminated with a 1W 120Ohm resistor Stub to Final Slave 120 Terminating Resistor b From Previous Slave x Figure 5 Termination with a 120 resistor 1 5 4 ESD protection Transients DESTINY provides RS485 transceivers that are rated for IEC 1000 4 4 15kV Air discharge or 4kV contact discharge This level of ESD protection will guarantee immunity from field failures in all but the most severe ESD environments DESTINY IP User Manual May 2006 1 5 5 Short Circuit Fault Condition Protection All YieldPoint sensors are equipped with a thermal shutdown polyswitch in the sensor connector which will prevent the DESTINY network from being interrupted due to a fault condition related to a sensor on the network The network data lines themselves are also protected against a fault or short circuit condition 1 6 TCP Connectivity with a Device Server DS Each Master IP contains an internet enabled device server Provided by Tibbo Technology Inc http www tibbo com that provides connectivity to an Ethernet network running TCP IP using an RJ45 plug In the current version of DESTINY IP all Master Configuration commands are transmitted using UDP User Datagram Protocol whereas all network Messaging uses TCP Transmission Control Protocol connection to a specified Master Device The application has the capability to run in AutoPoll mode and take automated readi
25. after date of the original shipment from the factory or 3 months after the date of installation whichever date comes first Yieldpoint Inc reserves the right to make substitutions and modifications in the specifications of equipment that do not materially or adversely affect the performance of the equipment New equipment may be returned within 30 days of shipment with prior approval New items which are less than thirty days old after shipment may be returned for credit less a minimum restocking and testing charge of twenty percent of the list price upon factory approval only provided the customer pays all shipping and handling charges Specially ordered or modified goods or goods which have been used or have been unpacked or goods which have been shipped more than thirty days prior are not returnable The information contained in this manual is subject to change without notice YieldPoint Inc makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Further YieldPoint Inc assumes no responsibility for any errors that may appear in this manual and makes no commitment to update or keep current the information contained in this manual Service Policy Units within the warranty period returned for repair test and recalibration are serviced at no charge in accordance with the terms of the warranty policy The Customer pays all
26. aging Ethernet Global Poll Current Master 10 or PD logfile Notepad File Edit Format View Help HUUU UU H U U U H U U H U H U H HOHE HOA RA U tr te 18 05 2006 2 30 17 PM Device server status OK on Master ID OL OOOOH OOOOH AIHA A ea tr te 18 05 2006 2 30 30 PM Successful data transfer sequence from Master ID O1 HHHHHH HHH HEHEHE 18 05 2006 3 00 19 PM Device server status OK on Master ID OL HEHEHE HHH HHH 18 05 2006 3 00 34 PM Successful data transfer sequence from Master ID O1 HEHEHE HHH HEHEHE 18 05 2006 3 30 20 PM Device server status OK on Master ID Ol OOOOH HOE OIRO HE Ere Be te er W 18 05 2006 3 30 36 PM Successful data transfer sequence from Master ID O1 CHOCO HOR RAH Er er err he te er 18 05 2006 4 00 19 PM Device server status OK on Master ID OL OCHOA CHOICE A HOH RRR er Br err CC 18 05 2006 4 00 34 PM Successful data transfer sequence from Master ID O1 o E iil i Draw n AutoShapes Wu Prem PEE P g ao a T Ar ad ZES I 4 REC TRK EXT OVR English Ca OK Page 23 Sec 3 23 37 At 24 7cm Ln 6 Col 82 iu Configuring an RS48 m 4 24 PM start P Figure 23 The Logfile between 2 30pm and 4 00pm i DestinyIP logfile Notepad yp 01 03 01 01 21 DESTINY IP lt 3 5 Help setting up an in office network YieldPoint will provide telephone assistance and Step by Step instruction for customers who want to set up an office network Call 613 531 47
27. canceling each other out meaning no net radiated EMI However this is based on the assumption that the wires are exactly the same length and in exactly the same location Because it is impossible to have two wires in the same location at the same time the wires should be as DESTINY IP User Manual May 2006 20 close to each other as possible Twisting the wires helps counteract any remaining EMI due to the finite distance between the two wires Received EMI Received EMI is basically the same problem as radiated EMI but in reverse The wiring used in an RS 485 system will also act as an antenna that receives unwanted signals These unwanted signals could distort the desired signals which if bad enough can cause data errors For the same reason that twisted pair wire helps prevent radiated EMI it will also help reduce the effects of received EMI Because the two wires are close together and twisted the noise received on one wire will tend to be the same as that received on the second wire This type of noise is referred to as common mode noise As RS 485 receivers are designed to look for signals that are the opposite of each other they can easily reject noise that is common to both Characteristic Impedance of Twisted Pair Wire Depending on the geometry of the cable and the materials used in the insulation twisted pair wire will have a characteristic impedance associated with it that is usually specified by its manufacturer The RS 485
28. daisy chain connection from Master one end of the bus to Slave 1 to Slave 2 to Slave 3 to Slave 15 max at the other end of the bus The bus must form a single continuous path and the nodes in the middle of the bus must not be at the ends of long branches spokes or stubs Figure 3a Figure 3c and Figure 3e illustrate three common but improper bus configurations Figure 3b 3d and 3f show equivalent daisy chained configurations Connecting a Slave to the cable creates a stub and therefore every Slave has a stub Minimizing the stub length minimizes transmission line problems A true daisy chain connection where for internal nodes both cables terminate at the terminal block is the recommended approach to eliminate configuration problems DESTINY IP User Manual May 2006 5 a b al irl Figure 2 Proper RHS and improper LHS network designs 1 5 Network Construction Physical Although the potential difference between the data pair conductors A and B determines the signal without officially involving ground the bus needs a ground wire to provide a return path for induced common mode noise and currents such as the receivers input current A typical mistake is to connect a Master and Slave s with only two data wires The usual solution is to use a second twisted pair to provide power Typ 20 28V dc and GND to the network DESTINY components contain two 2 position terminal block to attach a cable with two twisted pairs T
29. echnique to send information from an entire DESTINY network over a single channel of an ESG seismic system The DESTINY network can be powered from the ESG seismic systems 28V supply DESTINY ESG sends data from each instrument on the DESTINY network at regular intervals All destiny Masters require a stabilized 20 28V power supply and draw between 40mA and 180mA The Master is provided with a medical grade 24Vdc power supply which should be plugged into a grounded 110VAC 60Hz outlet The network cable shield should be interconnected at each Slave and then is connected to the earth at the 110V AC earth at the Master 1 3 DESTINY Slave Each DESTINY Slave provides a 4 PORTS that can accept any type of YieldPoint digital sensor and interface these to an RS485 network that can accommodate up to 15 Slaves i e 60 sensors Each Slave is powered from the 24Vdc RS485 power bus and draws a maximum of 40mA All network wiring to a DESTINY Slave should be completed before any sensors are attached Power is only supplied to the Slave when a sensor is plugged in This is indicated by the LED on the unit which will begin to flash intermittently 1 4 Network Design Considerations Since RS 485 allows connection of multiple transceivers the bus i e network configuration is not as straightforward as in a point to point bus RS 232C for example in which a single driver connects to one receiver alone The optimal configuration for the RS 485 bus is the
30. he wiring configuration is shown in Figure 3 the orange pair A B is the differential signal pair and the blue pair is 24Vdc blue with white and GND The DESTINY Master typically draws a max current of 100mA and each Slave draws 16mA To minimize power consumption each sensor on the bus is powered and reading taken sequentially so avoiding overloading the network for large sensor arrays Note a single sensor draws 10 25mA depending on its type Therefore a network with 1 Master and 15 Slaves would draw a little less than 350 365mA YieldPoint provides a high quality medical grade 24Vdc power supply for DESTINY networks that plugs into a 110V 60Hz outlet The user may choose to power the network from any source that can provide 20Vdc to 28V dc at the required current rating which depends on the number of Slaves on the network and will vary with network length 1 5 1 Cabling The standard EIA RS485 specifies does not specify the interconnection medium However use of twisted pair cable is recommended You can use a range of wire gauges but designers most frequently use 18 22 AWG The characteristic impedance of the cable should be 100 120 Ohm The recommended cable is Belden 9842 or an equivalent DESTINY IP User Manual May 2006 6 To Next Slave To Slave Stub To Next Slave To Previous Slave or Master ae Figure 3 Making the RS485 network connections at a DESTINY slave The Blue pair is power Bl
31. ination Network configurations are shown for simple single transmitter multiple receiver through multiple transceiver to multi branched circuits This application note is intended to provide basic guidelines for wiring an RS 485 network The RS 485 specification officially called TIA EIA 485 A does not specifically spell out how an RS 485 network should be wired But it does give some guidelines These guidelines and sound engineering practices are the basis of this note The suggestions here however are by no means inclusive of all the different ways a network can be designed RS 485 transmits digital information between multiple locations Data rates can be up to and sometimes greater than 10Mbps RS 485 is designed to transmit this information over significant lengths and 1000 meters are well within its capability The distance and the data rate with which RS 485 can be successfully used depend a great deal on the wiring of the system Wire RS 485 is designed to be a balanced system Simply put this means there are 2 wires other than ground that are used to transmit the signal WIRE 1 WIRES Figure I A balanced system uses 2 wires other than ground to transmit data The system is called balanced because the signal on one wire is ideally the exact opposite of the signal on the second wire In other words if one wire is transmitting a high the other wire will be transmitting a low and vice versa See Figure 2 DESTINY IP
32. les of Improper Networks The diagrams below are examples of improperly configured systems Each example shows the waveform obtained from the improperly designed network and compares it to a waveform from a properly designed system The waveform is measured differentially at points A and B A B Unterminated Network In this example the ends of the twisted pair are unterminated As the signal propagates down the wire it encounters the open circuit at the end of the cable This constitutes an impedance mismatch bringing about reflections In the case of an open circuit as shown below all of the energy is reflected back to the source causing the waveform to become very distorted DESTINY IP User Manual May 2006 33 fl FEET 10 FEET A wmm PAIR Mg n CABLE a LIT TRANSMITTER n A DATA OUT IMPEDEHLE g RECEIVER hl Pos 180 ns TOCMHE o J Volts Div pe OU UM TIE Probe Probe Invert hvet CHI 200v CHE FOW CHI F LEN Figure 10 An unterminated RS 485 network top and its resultant waveform left compared with a waveform obtained from a correctly terminated network right Wrong Termination Location Figure 11 shows a termination resistor but it is located in a position other than the far end of the cable As the signal propagates down the cable it encounters two impedance mismatches The first occurs at the termination resistor Even though the resistor is matched to the characteristic
33. ly written to a file when readings are retrieved every 30 minutes The naming of these files is as follows Slave ID Sensor ID yp 01 03 01 45 21 txt Master ID Port ID Sensor Type If the file does not exist then DESTINY IP will create a new file The Datalogging Tab Figure 16 shows a table of all the files existing and the number of records in each file Records from the table and the associated text file Figure 17 can be deleted at any time 2 4 Troubleshooting The Error Logfile The Logfile is a text document that can be opened from the data logging environment The Logfile is updated every time a new connection is made to a Master In addition all instances where the DESTINY IP encounters an error due to an unexpected response from the Master are recorded in the LogFile These errors may be caused by i a non responsive or damaged Master power loss to master 11 TCP IP transmission failures As a form of preventative maintenance the LogFile should be viewed on a regular basis to ensure that all component of the system are performing reliably The file can be deleted at any time 2 5 TestMode If a master has no slaves on its network then it will 1 return a Slave Map of 0000000000000000 in response to any M command and ii return a test data sequence as shown below N070399CRLF echo original command 2006 5 12 8 0 23 7 1 1 1 21 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 CRLF
34. ngs from the entire network once every 30 minutes by automatically creating a new TCP connection each time a different Master is polled Each data download cycle requires a Global Poll of each Master in sequence note the Masters are polled in the order they were added to the database For each master this involves 1 issuing an instruction to the Master to reboot itself 41 creating a TCP connection between the PC or Server and Master using a Port which increments between 2000 2100 i11 transferring data from all Slaves on the RS485 network In between data download cycles a TCP connection is established to display the Modbus ASCII messages ModLog being handled by the RS485 network controlled by the specified Master 1 7 Addressing 3 Jevels of hierarchical addressing are required to define where a given sensor resides within the DESTINY network 1 Each DESTINY master has a pre programmed MASTER_ID 01 32 ii Each Master is in control of a DESTINY network which can accommodate up to 15 Slaves which each have a SLAVE ID 01 15 Important Slaves on the same DESTINY network must have different SLAVE IDs Failure to follow this rule may result in damage to components iii Each Slave can accommodate sensors in 4 different Ports which are addressed by the PORT ID 01 04 Therefore a sensor is addressed as follows MASTER ID 01 SLAVE ID203 PORT ID 201 or 01 03 01 Figure 5 In addition each sensor will have its own Sensor ID
35. nnel 1 indicates a temperature of 21 3C 2947 2734 10 and channel2 1655 a displacement of 15 55mm 1655 100 100 These conversions are automatically completed by DESTINY IP before writing to file Figure 20 DESTINY IP Messaging r Local Settings Device Server Messaging Ethernet Modbus Messaging RS485 Global Poll Current Master ID 01 jot AO 000100000001F1 Login successful 0C0100000001F2 P D yp 01 03 01 01 21 Notepad File Edit Format View Help 2006 05 18 13 00 12 1 01 03 01 01 21 21 3 15 2006 05 18 13 30 16 2 01 03 01 01 21 21 3 15 2006 05 18 14 01 50 4 01 03 01 01 21 21 3 15 2006 05 18 14 30 14 5 01 03 01 01 21 21 7 54 2006 05 18 15 01 44 6 01 03 01 01 21 21 7 54 2006 05 18 15 31 41 7 01 03 01 01 21 21 6 54 2006 05 18 16 01 34 8 01 03 01 01 21 21 8 54 fm DestinyIP logfile Notepad PA yp 01 03 01 01 21 amp DESTINY IP Ty Configuring an R548 lt m 4 20PM Figure 22 The data written to the file over a 3 hour period Channel indicates temperature C of 21 3 21 8 and Channel 2 displacement in mm indicates a significant jump in movement from 14 55mm to 53 2 mm between 2 00pm and 2 30pm DESTINY IP User Manual May 2006 26 C Configuring an RS485 Network Microsoft Word SEE Y1 100 HR Z4 TimesNewRoman 10 TCP Winsock State Locate fisgieeato Porto Boop Status Connected eacacacaes Device Server Mess
36. obtained with the cable terminated properly with 120 ohms With this in mind it is important to match the terminating resistance and the characteristic impedance as closely as possible The position of the terminating resistors is also very important Termination resistors should always be placed at the far ends of the cable As a general rule termination resistors should be placed at both far ends of the cable Although properly terminating both ends is absolutely critical for most system designs it can be argued that in one special case only one termination resistor is needed This case occurs in a system when there is a single transmitter and that single transmitter is located at the far end of the cable In this case it is unnecessary to place a termination resistor at the end of the cable with the transmitter because the signal is intended to always travel away from this end of the cable Maximum Number of Transmitters and Receivers on a Network The simplest RS 485 network is comprised of a single transmitter and a single receiver Although useful in a number of applications RS 485 allows for greater flexibility by permitting multiple receivers and transmitters on a single twisted pair The maximum allowed depends on how much each device loads down the system In an ideal world all receivers and inactive transmitters will have infinite impedance and will not load the system down in any way In the real world however this isn t the case E
37. on character ASCII 3A hex and end with a carriage return line feed CRLF pair ASCII 0D hex and 0A hex The allowable characters transmitted for all other fields are hexadecimal 0 9 A F Networked devices monitor the network bus continuously for the colon character When a colon is received each slave decodes the address field the next 2 chars to find out if it the address corresponds Intervals of up to one second can elapse between characters within the message If a greater interval occurs the Master assumes that no slave with that address exists on its network A typical message frame is shown below START ADDRESS FUNCTION DATA EE Figure 9 The framing of a Modbus ASCII Message 2 2 2 2 The Query Response Cycle The Query The function code next 2 chars in the query tells the addressed DESTINY Slave device what kind of action to perform The data bytes contain any additional information that the slave will need to perform the function For example a function code 03 will query the slave to read holding registers and respond with the contents of those registers which correspond to a sensor reading The data field must contain the information telling the Slave which data to read The error check field provides a method for the Slave to validate the integrity of the message contents The Response If the Slave makes a normal response the function code in the response is an echo of the function code in the
38. onse consists of two parts 1 The message is echoed back case for all DSmessages and ii a 16 character string comprising 1 s and 0 s represents the SLAVE ID s that the master has detected on it s network In the example above Slaves with ID s 1 2 6 7 and 8 were detected by the Master on its network N Obtain the Sensor reading from all 4 PORTS Example Query N070399CRLF The Master ID chars3 4 is 07 the Slave ID chars 5 and 6 is 03 and the and the 99 chars 7 8 indicates that the latest set of readings is to be retrieved 24hr Archived Data Archived Data from the Master are retrieved using the M command with values of 00 23 for chars 7 8 specifying the hour for which the archived data should be returned Example Response N070399CRLF echo original command 2006 5 12 8 0 23 7 3 1 1 21 2950 5374 0 0 0 0 0 0 0 0 CRLF 2006 5 12 8 0 24 7 3 1 0 0 0 0 0 0 0 0 0 0 0 0 CRLF 2006 5 12 8 0 25 7 3 1 0 0 0 0 0 0 0 0 0 0 0 0 CRLF 2006 5 12 8 0 27 7 3 1 1 21 2950 12244 0 0 0 0 0 0 0 0 CRLF Each line corresponds to a Port of the Slave 4 in all In the example response Slave 03 on Master 07 has two DETECT GMMs plugged into Ports 01 and 04 The format of the data strings is as follows Year Month day hour minute second Master ID Slave ID Port ID Sensor ID SensorType Channel 1 channel 2 Channel 10 CRLF The value 2950 for the first channel of Port 1 is divided by 10 to obtain the temperature in K
39. processor Microsoft Windows XP Professional or Home Edition Service Pack 1 or 2 128MB of RAM 256MB recommended Up to 1OMB of available hard disk space The installer provided on the CD will create two folders Program Files DESTINY IP and Program Files Tibbo The latter contain the files needed to run the Device Server DS manager The installer will also create a shortcut to DESTINY IP on the desktop 3 Connecting to a single Master STEP 1 Simply plug a network cable into the RJ45 plug and connect the master to its power supply unit PSU 3 2 Configuring the Master s IP address STEP 2 Following the instructions outlined in Section 2 3 2 Configuring a Master s Device Server input the PC Server s IP address Gateway IP and Subnet Mask Make sure all other settings correspond STEP 3 On the Configuration Tab add the Master MasterID 01 in this case with the correct IP address of the Desination PC server on which the application is running This information is presented on the messaging tab 3 3 Running in TestMode with a single Master attached STEP 4 Return to the messaging environment and click on the Global Poll button A connection will be established with Master 01 and the Device Server messaging will output the test TestMode data shown in Figure 20 If this process in unsuccessful 1 check all network connections and ii check all IP setting in the DS manager If the problem persists it may be neces
40. que in allowing multiple nodes to communicate bi directionally over a single twisted pair No other standard combines this capability with equivalent noise rejection data rate cable length and general robustness For these reasons a variety of applications use RS 485 for data transmission The list includes automotive radios hard disk drives LANs cellular base stations industrial programmable logic controllers PLCs and even slot machines The standard s widespread acceptance also results from its generic approach which deals only with the interface s electrical parameters RS 485 does not specify a connector cable or protocol In its simplest form DESTINY is configured as an RS 485 bidirectional half duplex bus comprising a transceiver driver and receiver located at each end of a twisted pair cable Data can flow in either direction but can flow only in one direction at a time DESTINY allows for connection of up to 16 unit loads ULs to the bus The 16 ULs commonly comprise 1 DESTINY Master and up to 15 DESTINY Slaves Figure 1 illustrates the configuration of a multi point bus In this application three transceivers one Master and two Slaves connect to the twisted pair AHY PCIHETWDER IHTERHET SERVER RUHHIHG DATABASE L H Fanning TCP IP j 2 FAIR CORPER RU EE ad UP TO 3000 FEET ds Figure 1 The conceptual topology of a DESTINY network The Master forms a bridge between the mine communications system TCP IP in
41. r 0 202 0 0 20 75 DHCP D Disabled Config Device Servers IP address 192 168 2 35 Port 2014 A0 202 0 0 26 129 2007 N MO HEADS ee S 1A0 202 0 0 20 75 2008 N MC Broadcast UDF data irrelevant Inband commands 1 Enabled Data login D Disabled ponsuspen Connection timeout min 0 Disabled A Routing Mode 1 Server OR Client Master p Connection mode 0 Immediately on powerup 2 Set During Data Link Server login 0 Disabled g Download Cyc le Lennon IP address 192 168 2 13 Echo All DS Destination pot 2014 1 dDNS Server login D Disabled dDNS Server IP address irrelevant i dDNS Server port irrelevant Gateway IP address 127 0 0 1 v 3 start ews DL fW NEWEST DESTINYT NEWESTDESTINYT s DestinyTCP Micro WA Inbox OutlookEx 2 DSManager 3 6 6 Gi screencaps2 doc amp j E 12 45 aM ws Figure 13 The Settings form DESTINY IP User Manual May 2006 18 DESTINY IP Configuration Datalogging Add Delete ALS Manager amp Settings DS lt V3 51 NL gt enterues prea meak Network Settings Serial Settings Outbound packets All E TE Local Device Sd Eran UDP 0 Disabled or remote Enter the Status D Idle or remote 3 600 bps J Paty None 1 8 bits Soft entry into Serial programn 0 Disabled On the Fly commands 1 Enabled beds Notification bitmask Change IP Config Device E NEWEST DESTI fm NEWEST DESTI s
42. roblems with this connection If vou cannot connect click Repair dDNS Server lod 0 Disabled Gateway IP address 1821682 13 ES Subnet mask 255 255 255 0 j rrelevar v Cancel start 228 EN 7 ey DestinyTCP f NEWEST DEST i Wireless Netw loofile txt No VZ Microsoft Access K Inbox Outloo amp DS Manager Siu Figure 19 Using DS Manager to set the IP settings The box on the left is opened from the networking icon as the LHS of the taskbar 3 4 Building a simple network If already plugged in unplug the power Supply unit from the 110V AC power supply STEP 5 Connect a Slave in this example SlaveID is 01 to the Master using a short length of network cable see Section 1 5 After the network connection has been made plug a sensor DETECT GMM is this case into Port 01 of the Slave Plug into the 110V power supply The Slave s LED will flash when contact is made indicating it is operational and intermittently when it receives Modbus Commands from the Master Note The Modbus Slave is only powered when a sensor is plugged in DESTINY IP User Manual May 2006 24 DESTINY IP Eef Local Settings TCP Winsock State Device Server Messaging Ethernet Modbus Messaging RS485 Current Master ID 01 Log c MO10099 0D0100000001F1 M010099 echo j 0C0100000001F2 0000000000000000 0B0100000001F3 0A0100000001F4 NO15099 09010000
43. roperly terminated and the transmitter is driving only a single twisted pair however the connection point stub for the receiver is excessively long A long stub causes a significant impedance mismatch and thus reflections All stubs should be kept as short as possible DESTINY IP User Manual May 2006 35 TWISTED PAIR CHARACTERISTIC IMPEDANCE 121051 TRAN SMITTER 2e 1 ii 150 FEET LONG STUB 10 FEETIM THIS EXA RIFLE DATA OUT RECEIVER SIGHAL MEASUED ATTHIS POINT DIFFERENTIALLY Tek JL Mi Tis Mos Tets CURSOR ETid M Pos ttis cii ze ZV H ME o 0871 Figure 13 An RS 485 network that has a 10 foot stub top and its resultant waveform left compared to a waveform obtained with a short stub References 1 TIA EIA 485 A Electrical Characteristics of Generators and Receivers for Use in Balanced Digital Multipoint Systems 2 TSB89 Application Guidelines for TIA EIA 485 A DESTINY IP User Manual May 2006 36 DESTINY IP User Manual May 2006 37
44. sary to disable the windows firewall in the Control Panel When this sequence is complete the Master will automatically begin its Modbus messaging cycle and since there are no Slaves attached to the network it will simply send a 01 function code to Slaves 1 15 but will not receive any replies Thereafter every 30mins the Master will interrupt its Modbus cycle and transmit the TestMode datastream DESTINY IP User Manual May 2006 23 DESTINY IP Add Delete A Master E Connect To A Specific Maste Enter or Select Master ID Number Master ID IP address Configuration Corresponding settings for Master in DS Manager PC or Server Network Settings i Wireless Network onnection Status 2 x General Support Corso dien IP address 182 168 2 35 Port 2058 zA Address Type Assigned by DHCP Transport protocol 1 TCP p Status F IP Address 192 168 2 13 2 01 it aS F j e nband commands Enable Subnet Mask 255 255 255 0 c iu 0 2 Busen 0 Disabled Default Gateway 192 168 2 1 Connection timeout min 0 Disabled Routing Mode 1 Server OF Client Master Connection mode D Immediately on powerup Buzi Link Server login 0 Disabled Dagtination IP address 192 168 2 13 Destin port 2058 Change IP Lil Windows did not detect p
45. this case and the RS485 DESTINY network The network can accommodate up to 15 Slaves The RS485 requires two twisted pairs usually 18 24AWG one to provide a power bus 24Vdc and GND the other for differential RS485 signals DESTINY IP User Manual May 2006 4 1 2 DESTINY Master The DESTINY Master is both 1 an RS485 bus controller and ii a bridge to an existing mine wide communication infrastructure Different versions of the DESTINY Master are available depending on the type of communication interface required RS232 for leaky feeder radio modems TCP IP for Ethernet RS485 for existing industrial networks or frequency modulation for ESG seismic systems Currently four types of DESTINY master are available DESTINY RS232 provides an interface to an RS232 serial port such as a leaky feeder radio modem a PC or a serial to Ethernet device server bought separately DESTINY IP provides an interface to an existing Ethernet network running TCP IP The MASTER TCP IP can operate in either TCP or UDP mode TCP IP connectivity is provided by a piece of Hardware called a Device Server DS DESTINY RSASS provides a bridge to an existing wide wide RS485 network The DESTINY network is optically isolated from the host network and resides as a single unit load on the host mine wide RS485 network The MASTER RS485 can be powered from either the existing RS485 Network or a separate 20 28V supply DESTINY ESG uses a Frequency Modulation t
46. ting Status DS Manager DS Manager has discovered a LI pi Echo All DS can be Masters 02 and 07 in Echo All DS i nli used to discover the Auto discovery mode Two Masters also Device Servers on the local network segment This list is created automatically by the DS Manager Click here to learn more about the auto discovery access mode More info fg NEWEST DESTINYT fa NEWEST DESTINYT e CP Micro KA Inbox Outlook Ex lj screen caps2 doc ES DS Manager V Figure 12 DS manager has auto discovered 2 Device servers i e DESTINY masters connected to the Ethernet network The MAC address are provided from the factory and are indicated on the Master By Selecting a Device Server and clicking on the Settings button the form in Figure 13 allows the setting to be changed Figure 12 DESTINY IP Add Delete A Master Connect To A Specific Master Device Server Datalogging Configuration Connect using UDP C TCP Enter or Select Master ID Number 01 Master ID 01 Enter the I P Address s2468235 0 IPaddress 192 168 2 35 Change IP Buzz ADD DELETE T DID OU Settings DS lt V3 51 NL gt Access mode telwork Settings Serial Settings Outbound packets All MAC add
47. to the File yp 01 03 01 01 21 txt which will have been created if it didn t exist in the Program Files DESTINY IP folder Figure 22 The other 3 Ports return zeros since no sensors areattached and for these ports nothing will be written to file The corresponding logfile is shown in Figure 23 symbols unsuccessful or failed operations symbols indicate successful operations and DESTINY IP User Manual May 2006 25 DESTINY IP Mef Messaging Configuration Datalogging Local Settings TCP Winsock State Local IP 192 168 2 10 Port No 2003 Status Connected 233393933359 Device Server Messaging Ethernet Modbus Messaging RS485 Current Master ID oao o Log iA 030800050000FO0 M010099 echo 03010101FA 0010000000000000 030100000001FB 020100000001FC N010399 010100000001FD N010399 echo 2006 5 18 14 1 50 1 3 1 1 21 2947 1655 0 0 0 0 0 0 0 0 2006 5 18 14 1 50 1 3 2 0 0 0 0 0 0 0 0 0 0 0 0 2006 5 18 14 1 51 1 3 3 0 0 0 0 0 0 0 0 0 0 0 0 2006 5 18 14 1 52 1 3 4 0 0 0 0 0 0 0 0 0 0 0 0 D060518 DO60518 echo T140202 T140202 echo Archive Data Master ID Slave ID 24 Hour Time ge l Get Archive Data m Configuring an R5485 DESTINY IP Figure 21 The output screen following a Global Poll with a sensor SensorID201 and SensorType 21 GMM plugged into Port 01 of Slave 03 on Master 01 The Reading is for 18 May 2006 at 2 01 50 Cha
48. ue 24Vdc and While GND the orange pair is signal Orange A white B The braid should be coupled together and is grounded at the master The network cable shield should be interconnected at each Slave and then is connected to the earth at the 1 10V AC earth at the Master 1 5 2 Data Rate Vs Cable Length Data can be transmitted over an RS 485 bus for 4000 ft 1200m and data can be sent over the bus at 10 Mbps However data cannot be sent at data at a rate of 10Mbps over a length of 4000ft Rather there is a trade off between data rate and network length the longer the network the slower that data rate required Figure 4a shows a conservative curve of data rate versus cable length for RS 422 and RS 485 The key point is that you can t obtain the maximum data rate at the maximum cable length But if you operate the bus within the published conservative curves you can increase the likelihood of error free operation DESTINY IP User Manual May 2006 7 Erte E CABLE LENGTH FTI 100 rk 1s Taki IM TOM a DATA RATE bps Figure 4 DESTINY sends at a rate of 9600bps and so cable lengths of 4000ft are feasible 1 5 3 Termination Important DESTINY RS 485 buses should be properly terminated The purpose of the termination is to prevent adverse transmission line phenomena such as reflections The DESTINY Master which must always reside at one end of the bus is internally terminated and idle state bias resistors are also included
49. us OK on Master ID 07 HOHE HOHE HHH HHO HHH ee 19 05 2006 12 01 16 PM Successful data transfer sequence from Master ID 07 HOHE UHHH UHHH HHO HH WWW 19 05 2006 12 01 35 PM Device server status OK on Master ID 0l OHHH HHH HOHE HOHE HH HH 19 05 2006 12 30 36 PM Device server status OK on Master ID 0l HOHE HOHE UHHH OEE HHO HH UHHH HH HH He WW 19 05 2006 12 30 52 PM Successful data transfer sequence from Master ID O1 HOHE HHO HHH OOOOH HHO HHH HEE HOW WH ee 19 05 2006 12 31 10 PM Device server status OK on Master ID 07 HOHE UHHH HOHE UHHH HHI HHH HH He WW 19 05 2006 12 31 23 PM Successful data transfer sequence from Master ID 07 HOHE HOHE HHO UHHH HHH AH HW 19 05 2006 12 31 41 PM Device server status OK on Master ID 0l Eam e DestinyIP amp DESTINY IP Gh Configuring an R5485 P logfile Notepad R 2B 12 44 PM Figure 18 An example Logfile DESTINY IP User Manual May 2006 22 3 Getting Started An in office network It is strongly advised that a new user spend 20 minutes and build a small in office network with a Master and a Slave in order to understand how the software and hardware work in a controlled environment This will prove far easier to troubleshoot than in the underground environment Call YieldPoint at 613 531 4722 if you need help getting started with an office network To run DESTINY IP the user requires a PC or server of the following specification Intel Pentium
50. very receiver attached to the network and all inactive transmitters will add an incremental load To help the designer of an RS 485 network figure out just how many devices can be added to a network a hypothetical unit called a unit load was created All devices that are connected to an RS 485 network should be characterized in regard to multiples or fractions of unit loads Two examples are the MAX3485 which is specified at 1 unit load and the MAX 487 which is specified at 1 4 of a unit load The maximum number of unit loads allowed on a twisted pair assuming a properly terminated cable with a characteristic impedance of 120 ohms DESTINY IP User Manual May 2006 31 or more is 32 Using the examples given above this means that up to 32 MAX3485s or up to 128 MAX487s can be placed on a single network Examples of Proper Networks With the above information we are ready to design some RS 485 networks Here are a few examples One Transmitter One Receiver The simplest network is one transmitter and one receiver Figure 6 In this example a termination resistor is shown at the transmitter end of the cable Although unnecessary here it is probably a good habit to design in both termination resistors This allows the transmitter to be moved to locations other than the far end and permits additional transmitters to be added to the network should that become necessary P RESISTOR Ry 2p TWISTED PAIR x t ws eee A JG DATA QUT BT TRANSMI
51. xist to i create a TCP connection ii retrieve information regarding the network configuration iii retrieve data from specified network slaves and iv synchronize the time and date for the Real Time Clock RTC in the Master with the PC server usually daily at 3 00am DESTINY IP User Manual May 2006 10 2 2 1 1 Port change and TCP Connection The message sequence shown in Figure 6 indicates that a successful TCP connection has been established with the current MasterID 01 in this case During the sequence the green LEDs next to the Winsock state indicate progress The final OK command is a response from the DESTINY Master indicating that an operational TCP connection has been established At the end of the sequence the Winsock state should be Connected This sequence is followed every time the software needs to connect to a different Master and the Port No increments between 2000 and 2100 each time a new connection in required Note A TCP connection must be established before commands defined by function codes discussed in the next section can be sent to the Master IP Address of Host PC running this application TCP IP Port SSS umo nme DESTINY IP Local Settings TCP Winsock State Local sz458248 Portno foo Statin Connected Master_ID selected for Modlog Poll all Sensors Now Device Server Messaging Current Master ID 01 030800050000FO Login successful 03010109F2 Start Modlog Now A
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