Mx1100 UMI Serial BTR Installation & User's Manual
Contents
1. AUTOMATION Mx1100 UMI Serial BTR Installation amp User s Manual For Sanyo Denki 2400 Series Tape Readers Copyright 2011 All rights reserved Memex Automation Inc 200 3425 Harvester Rd Burlington Ontario Canada L7N 3N1 12 Mx1100 Serial Fanuc BTR ii Mx1100 BTR User s Manual Table of Contents 5 About this Manual 5 The History of the BIR u 5 Installation 85 0 7 Package t OD CBS 7 Before You ES HE t m o 7 Installing the Mx1100 BTR 8 Operating your Mx1100 BTR 12 Imi AAA e T 12 Configuration for Sanyo Denki Tape Reader 12 Layout of the Mx1100 Serial 13 13 General Troubleshooting 13 Technical Support amp Service 17 m E 18 EET T ind 20 Appendix A Configuration amp Settings 23 Mx1100 UMI BTR Serial Configuration 23 Appendix B ASCII Table nt datand 26 Automation NC ceea 28 Thank you for choosing for your 28 Manufacturing Connectivity Solutions 282. 14 9050930 Savi MM Sci a y nnns y F V2 X3H3W MMM 949 02 NI SY OOTIXW Us 121222227 0060 o SYM 19 966 522 Un po nur ae es p sa wal i i a muni E E aa tada DI TE m 3 2 v Vs 10815 laa a wanna dare Y v Snug u j MC zz AA iv _ Mx1100 BTR User s Manual 15 Introduction Thank you for purchasing the Mx1100 UMI Universal Machine Interface BTR At Memex we invest a great deal of effort in the design manufacture and testing of each unit we build and back it with a three year limited warranty We are confident you will find the Mx1100 an important component of your shop floor communications system About this Manual This manual explains how to install and operate the Mx1100 and consists of the following sections Installation Instructions explains how to install the Mx1100 UMI BTR interface board Reference contains a troubleshooting section notes area and contact information for customer service and technical support Appendix A Configuration amp Settings provides information for software DNC configuration BTR jumper settings and serial cable configuration pin out charts Appendix ASCII Table lists ASCII values in both Decimal and Hex formats their corresponding symbol and keyboard key where applic
3. HT t J0122uu0 Vus 31922 aui Sunuauo Aay ou sey 21922 4 AemAay 3 qe SV TV siadunf uoneun8yuo sayndwo7 0 128uu0j TWOD yaund 5 5 5 01 p uuoz pe y uid 9z aigesiq NI HONNd pdf ean IND 01 12auu02 0 9103107 Zdf 1snui T df pa12auuoo Jou 51 ajqe gt yaund 330 39 INW si ajqe gt Jopeey ade njueg oAues 104 uogein3yuo 19 LNVLYOdWNI Page 113 Reference This chapter contains troubleshooting hints and information about Memex Technical Support and Service General Troubleshooting The Mx1100 UMI BTR is designed to install easily and quickly However if experiencing difficulty in the procedures please check the following to isolate and resolve the problem 1 Check that the PWR ON LED on the BTR leftmost LED in the LED block at bottom centre is on and bright The RTS LED for COMI should also be on If there is no power to the BTR ensure that the cables from the Control and from the Tape Reader if connected are oriented properly and are well secured Also check that one of the following is true The 5TR jumper JP18 at bottom right is ON and the 24TR jumper JP16 at middle left and REG ENBL JP10 near middle bottom are OFF or b The 5TR jumper JP18 is OFF and the
4. SKU 5120 Punch Cable for Meldas CNC only e Serial Interface Cable PC BTR Optional e Serial Transfer Software Optional Before You Begin Please read all instructions before proceeding We recommended first making a temporary installation becoming familiarized with the components and orientation of the assembly testing the functionality and then making the installation permanent by mounting the BTR and routing and securing the cables where they are out of harm s way 18 Installing the Mx1100 UMI BTR General The Mx1100 UMI installation procedure is straightforward and relatively easy to complete connect the to the CNC where the Tape Reader was connected optionally connect the Tape Reader to the BTR and mount the BTR on the inside of the Tape Reader door All the hardware and accessories are provided All that s needed are some basic skills and hand tools Estimated time required 45 minutes 1 Prepare the site Ensure that the Tape Reader and control are working properly before beginning the installation When ready turn OFF all power to the control machine and computer system 2 Access the Tape Reader Locate the panel on the control that has the Tape Reader mounted on it Open this door to gain access to the back of the Reader 3 Disconnect the Tape Reader Locate the 40 pin cable connector labelled JO It can be found on the circuit board
5. 24TR jumper JP16 and REG ENBL JP10 are ON In case a above the BTR is sourcing 5 volts from the CNC in case b it is sourcing 24 volts and reducing it to 5 volts Typically 5V setting is used with a Fanuc control Note The default power source setting is above 5 volts However in some CNCs the 5 volt supply has faded to below the threshold that will power the BTR If the BTR won t power on try using 24 volts by setting the jumpers as in b above Note references made to objects located on the BTR are made with respect to the BTR being oriented horizontally so that the Universal Machine Interface label can be read at the bottom right See diagram page 7 Layout of the Mx1100 UMI Serial BTR Alternate source of power Ifthe PWRLED still does not come on carefully find a source of power on the control between 7 to 24VDC and wire it in to the screw down terminal block J17 at the lower left corner of the BTR When power is brought in through the terminal block the jumpers must be set as in b above Check that the BTR is working properly When the control is powered up or reset the BTR s STATUS LED 2 LED in LED block at middle bottom should blink One blink indicates that the Mx1100 is in BTR Mode This means that it is ready to receive information through the serial port and to send it to the control Two blinks indicate that the Mx1100 is in TAPE Mode
6. This means that it is ready to pass information through the BTR from the Tape Reader to the Control The leftmost TX LED will also blink as the BTR sends out a status message on its COMI port during power up With most Tape Readers turning the Tape Reader on off or switching it between Load and Release will switch the BTR between modes Check the status message When the BTR is powered on or reset it sends a short message on its COMI port indicating which mode it s in The STATUS and first TX LEDs will blink during output If the computer is properly connected and your DNC software is configured to match the BTR communication settings and is set to receive a file it should be possible to capture and read the status message If the message is clearly readable then the BTR s communications are good and so is the cable the settings the computer and the DNC software NOTE Some versions of the BTR require the A6 jumber to be off echo enabled for the status message to be sent back to the PC on Power On The Status and Tx LEDs flash but there is no status message First the computer has to be watching for the status message with DNC software or at least with a terminal program or utility After installing your software verify that the correct communication parameters are set and check that the correct computer COM port is being used Check that the BAUD RATE is properly set and matches the baud rate on the BTR check option jumpers Al
7. 3 7 Option BTR Tape Mode Switch This switch is only needed if you want to enable a paper Tape Reader that does not have reels If the Tape Reader is Model 1400 has reels this switch isn t required since the Reader s switch will control the BTR s mode And if enabling the Tape Reader isn t necessary this switch isn t required regardless of what type of Reader exists This switch allows the BTR to be toggled back and forth between Tape mode to use the Tape Reader and BTR mode to send files from the computer It plugs onto JP3 labelled SPI on the left side of the BTR just behind the COM2 port To mount the switch to the CNC permanently drill a 14 hole in the cabinet and bolt it in place Note A second use of the Mode Switch is as a manual reset for the BTR The BTR has a 78 byte input buffer or larger depending on UMI options installed that will contain a small portion of the incoming g code program until it finishes passing through In the event of an abnormal interruption of data flow machine error etc and the g code program must be stopped and resent the BTR buffer should be cleared so the control doesn t get that last piece of the previous send before the start of the new send If you have connected a Tape Reader with reels flicking its mode switch will reset the BTR If not you can use the BTR Tape Mode switch as a reset switch Note references made to objects located on the BTR are made with respect
8. Jumper ON Mx1100 9 RS232 C Serial Port Pin Functions Diva ee est Receive Data P mean Transmit Data aj P ae Signal Ground TIN EH NEEDED ENS CURES PNE A RTS Pin e aa a Se CTS Piri une a ea Power Output Note has enabled Pin 9 to be a power source for external devices It is enabled by jumpering JP33 PWR P9 DBL see diagram page 7 The output voltage depends how the BTR is being powered 5V from or Tape Reader no output 24V from or TR 24V output input from screw down terminal J7 same voltage output on pin 9 Mx1100 UMI Serial BTR Cable Configurations A Software Handshaking Only Page 125 Computer Mx1100 BTR 25 pin Female 9 pin Female 2 2 Rx 3 3 Tx 5 7 5 56 FG 1 No Connection 9 pin Female 9 pin Female Tx 3 2 Rx Rx 2 3 Tx SG 5 5 SG FG D shell No Connection B Hardware Handshaking Enabled Computer Mx1100 BTR 25 pin Female 9 pin Female 2 2 Rx 3 3 Tx RTS 4 8 CTS CTS 5 7 RTS SG 7 5 56 FG 1 No Connection 9 pin Female 9 pin Female Tx 3 2 Rx Rx 2 3 Tx RTS 7 8 CTS CTS 8 7 RTS 56 5 5 56 FG D shell No Connection NOTE The cable s shield should be grounded at one end of the cable and not at the other so it does provide a noise drain
9. and A2 see pg 17 and that the STOP BITS are set to 1 Make sure that the cable connecting the BTR to the computer is a properly configured RS 232 serial data cable and that it is properly connected see Step 6 below Also verify that the PC s COM port is functioning properly Check the serial data cable and handshaking settings First make sure the cable matches the appropriate diagram under Mx1100 UMI BTR Cable Configurations page 19 Second make sure the cable BTR settings and software settings match with regard to handshaking method If using software handshaking Xon Xoff only see table A on page 19 make sure that BTR Jumper A3 is ON and your DNC software is set for Xon Xoff handshaking only If using hardware handshaking see table B on page 19 make sure that BTR Jumper A3 is OFF your DNC software is set for RTS CTS and 10 11 Page 115 Xon Xoff handshaking and the cable supports it by having the wires for RTS and CTS connected for a total of five wires connected at each end Note Software handshaking can be used with a hardware handshaking cable but nor the other way around Third make sure every wire connection at each end of the cable is solid there are no breaks in the wires no wire insulation is pulled back far enough to allow bare wire to touch another wire or any other metal parts and no solder or debris is touching more than one pin If everything looks good at the ends it may be necessary
10. but does not form a ground loop On 25 pin connectors Pin 1 is a Frame Ground On 9 pin connectors there is no Frame Ground so the D shell or other ground may be used but not the Signal Ground Appendix ASCII Table nmoso gt NOU 0 XAO a _ gt A C 1N0 II OI OZ lt MEME Ron EM DOD gt Oe NP UPU PD COON DA Caomouozzr AC gt Appendix ASCII Table _ 20 AUTOMATION Memex Automation Inc 200 3425 Harvester Rd Burlington Ontario Canada L7N 3N1 Phone 905 635 3040 Fax 905 631 9640 www memex ca Sales 905 635 3043 Support 905 635 3041 Thank you for choosing Memex for your Manufacturing Connectivity Solutions ISO9000 DOCs Current Manuals M100708E Mx1100 Serial BTR for Sanyo doc
11. circuit typically a terminal or computer ECHO A reflected signal Information is sent back to the transmitter from the receiver often for verification purposes Page 121 EIA Electronic Industries Alliance A United States organization of manufacturers that establishes and recommends industrial standards They developed the EIA standard code used in early NC and CNC communications Also refers to a form of 7 bit ASCII with Odd parity used largely on CNCs FRAMING The procedure used to identify the beginning and end of a group of data bits FRAMING ERROR error that occurs when a receiver loses synchronism to the incoming data G CODE The instructions used to dictate the movement of a machine A list of these codes is commonly called a part program HANDSHAKING process that regulates the flow of data between two devices Also called flow control HARDWARE HANDSHAKING Handshaking flow control by use of the RTS and CTS control lines on an RS232 serial interface ISO International Standards Organization One of the world s largest standards organizations Also refers to a form of 7 bit ASCII with data encryption and Even parity used largely on CNCs LOCAL ECHO Refers to when a terminal is configured to internally route its transmitted character around to its receiver section for display A contraction of modulator demodulator The modem converts a computer s digital bit stream into an analog signa
12. labelled A7 1 200 on the back of the Tape Reader A 40 conductor ribbon cable connects this connector to the CNC Note which side of this connector the cable s red stripe goes on Disconnect this cable from JO 4 Connect the BTR Connect the cable disconnected in Step 3 to the BTR s 40 pin JP7 connector near top right labelled CONTROL without twisting the cable Make sure the cable s red stripe is on the right where Pin 1 is marked with a white square see diagram page 7 This connects the BTR s Sanyo control port to the control Caution It is very important that the cables are installed properly and with the correct orientation If one of the cables is plugged in upside down severe damage will occur to the BTR to the Tape Reader and to the control s Master Board 19 5 Mount the Locate safe spot on the back of the door and magnetically mount the Mx1100 UMI BTR 6 Option Connect the Tape Reader to the BTR If you wish to enable the paper Tape Reader take the new 40 conductor ribbon cable and plug it onto the JP6 connector labelled TAPE READER near the bottom right ofthe BTR The red side ofthe cable goes on pin 1 ofthe connector see diagram on page 7 Plug the other end of the cable onto the JO connector on the Sanyo Tape Reader card from which the cable was removed in Step 3 ensuring the red wire the ribbon cable goes on pin I of the connector as noted in Step
13. to the BTR being oriented horizontally so that the Universal Machine Interface label can be read at the bottom right See diagram page 7 8 Option Punch Cable To punch part programs parameters etc from the control to the computer connect the control s punch port to the BTR Locate the punch port on your control It s usually a 25 pin D sub db25 connector Plug the 25 pin end of the Facit punch port interface cable into this port Note If the control is a Meldas it is more likely to be a blue rectangular 34 pin connector In this case a custom Meldas punch cable available from Memex is required Plug the 26 pin end onto BTR s JP4 connector labelled PUNCH IN The red stripe goes on the side with Pin I see diagram on page 7 Remove the JP17 jumper labelled PUNCH DISABLE in the upper right corner of the BTR Configure the Set the jumpers on the BTR to configure the communications parameters required for your DNC system The option jumpers listed on page 18 include the following 1 and A2 set the Baud rate Typically 9600 baud both jumpers is used unless your cable doesn t support that rate reliably The RS232 specification supports 9600 Baud with a cable length up to 50 feet 15 metres but it is often possible to exceed that It s important to use cable specifically designed for RS232 serial data 22 AWG twisted pair stranded wire not solid shielded Low capacitance a rating of 1
14. 1 to 15 pF per foot is best In any case if you have a long cable run or are experiencing unreliable data transmission try lowering the Baud rate NOTE Ethernet cable is not suitable for use as serial data cable A3 OFF adds hardware RTS CTS handshaking A3 ON is software Xon Xoff only Generally it is preferable to use both which means setting A3 OFF and making sure your cable supports hardware handshaking see Note 6 on page 10 A4 OFF uses the standard Xoff character 13 Hex Set A4 ON if your DNC or terminal software uses 93 Hex for Xoff A5 OFF uses the standard Xon Xoff handshaking method a single Xoff Setting AS ON sends a continuous stream of back to the computer until the next Xon This enables the BTR to be used with some terminal programs that were intended for use with a modem such as Procomm although we highly recommend the use of proper DNC software A6 OFF will echo incoming data back to the PC for diagnostic purposes Set A6 ON for normal use 7 OFF is ISO data and ON converts incoming data to EIA format for controls that require EIA data A8 overrides the Tape Reader s selection of BTR or Tape mode If the Tape Reader wasn t reconnected to the BTR or if the Tape Reader isn t intended to be used often and the BTR will usually in Tape mode set A8 ON Remember to remove it when a tape needs to be read Page 111 SG JMPR ON disables signal ground surge suppression PWR P
15. 9 DBL ON activates power on COMI s pin 9 for use with devices such as buffers or modems see note on page 19 24TR 5TR and REG ENBL select BTR input voltage and should be factory set to work with the Tape Reader for which it is intended If its power source needs to be changed please refer to note 1 on page 8 for settings 10 Connect to the Computer Connect a serial cable from the 9 pin COMI on the BTR to the computer s serial port see page 19 for cable configurations 11 Test the Functionality Refer to Operating the Mx1100 UMI BTR page 6 and if necessary Reference page 8 12 Mark and Reroute the Cables Mark the connectors and cables to ensure proper reconnection Disconnect the cables and route them neatly where they won t be pinched etc Mount the BTR in a safe location inside the control cabinet Carefully reattach and secure all cables with cable ties CC E x a gt o o gt O tc F a NO 9 nw 938 pue 412 104 usui 330 5 316 31 330 99 5 938 pu 315 104 usu NO 5 315 LNVLYOdWNI jeuondo Japeay ade 01 pauuo apeay 0 10123125 S Jore nday tZ uo andano Jamod a qeu3 TINOD 6980 JaMOg Lf 5031 513235 416 STar u3avau IdVL 18N3 938 JODS
16. able This may be helpful in configuring DNC software in some cases The History of the BTR The Behind the Tape Reader board or BTR as it is commonly called is an electronic signal processor designed to emulate the function of a paper Tape Reader and provide an RS232 serial port as an alternate method of data entry to an NC or CNC control RS232 is an international standard for electronic communications and is a faster and more reliable means of data input than using punch tape or Manual Data Input MDI Originally the only one way that a part program the G code could be entered into a machine tool was through MDI mode which allowed the program to be input using a keypad at the control The MDI process was fine for small programs but it was time consuming and error prone for longer programs It took time to set up and to prove the MDI code before operation could commence Machine flexibility was low since each new program required time to input With all the wasted time and lack of flexibility it was not very long before someone invented an alternate form of control input the paper Tape Reader The paper Tape Reader provided a faster more reliable form of data input to the numerical control However these Tape Readers were mechanical in nature and required regular maintenance and care to perform properly Tape Readers allowed data and programs that were punched out on a paper tape to be read in by the control at a rate of approxim
17. ately 300 to 400 characters per second A few problems inherent in the Tape Reader are it has limited ability to accept commands and inform the operator of problems and status it is prone to mechanical problems it requires cleaning lubrication and other maintenance it has a limited capacity of 1000 feet 305 metres of tape It was commonly 16 suggested that busy shop keep a spare reader in inventory in preparation for the time when broke down The process of punching data tapes whether paper Mylar or metal was expensive time consuming and brought up storage concerns Because of the absolute nature of a punched tape the process had to be redone for every program revision The programmer and operator had to work closely together to keep the tape accurate and up to date Old tapes had to be filed or destroyed and the latest version had to be carefully marked and stored Finally the tape itself had to be handled with care since it was prone to damage Later machine controls had a new mode of operation that allowed their Tape Reader s endless spool of tape to surmount memory constraints Originating on Numerical Controls NC that had no memory Direct Numeric Control DNC allowed execution of a program while it was being read This drip feed method meant that the program was limited in size only by the length of tape used This type of operation was very much appreciated later on with the advent of Computerized Nume
18. ed together with XON as a handshake XON Transmit On A device control character DC1 or 11 hex used to control the flow of data between two devices XON is used together with XOFF as a handshake XON XOFF Software handshaking using the XON and XOFF control characters Page 123 Appendix A Configuration amp Settings Mx1100 UMI BTR Serial Configuration Baud Rate 9600 default set by jumpers A1 amp A2 Data Bliss 7 Stop 1 Handshake See note 6 page 10 If using terminal software these settings may also apply Duplex FULL ASCII transfer options Strip the High Bit ON Option Jumpers on the Mx1100 UMI Serial BTR 1200 2400 4800 9600 Baud 100 Baud Baud Baud 1 2 Add CTS RTS flow control m Xon Xoff flow control only 4 13 hex Xoff 93 hex A5 Single Xoff Continuous Xoff Echo m No Echo 7 No conversion ISO EIA conversion A8 BTR Mode controlled by Tape Reader Switch Force BTR mode 24TR JP16 Enable 24V power from Tape Reader 5TR JP18 Enable 5V power from Tape Reader REGENBL JP10 Enable 5V Power Regulator PunchDisable JP17 Use if Punch Port not connected SG JMPR JP22 Disable COM1 signal ground surge suppression PWR P9 DBL JP23 Enable power output on COM1 pin 9 NOTE NO Jumper m
19. el is a 0 space STOP BIT The last bit used to frame an asynchronously transmitted character Its logic level is a 1 mark SYNCHRONOUS TRANSMISSION High speed communication whereby data characters are sent in direct succession to each other without the use of Start and Stop bits TAPE READER An input device used on CNC Machines and other industrial equipment Used to read coded data on a punched tape Older Tape Readers were a mechanical device whereas newer ones use optical devices that sense light passing through the holes in the tape TERMINAL input output device used by an operator to communicate with a host computer It consists of a keyboard and a display to monitor alphanumeric characters entered at the keyboard or received from a remote device TERMINAL SOFTWARE Computer software that enables a computer to act as a terminal usually used with modems Can be used to exchange data over a serial cable between two computers or a computer and a machine control but does not provide the level of flow control necessary to prevent dangerous miscommunications with a machine control Specific purpose DNC software is highly preferable TIME OUT ERROR An error that occurs when a device fails to respond to a message within an expected period of time Tx Transmit Data Refers to the output for the data signal XOFF Transmit Off A device control character DC3 or 13 hex used to control the flow of data between two devices XOFF is us
20. l suitable for telephone lines and vice versa PAPER TAPE A media of part program storage Holes were punched in a one inch paper tape to represent G codes These tapes were then read through a Tape Reader to be loaded into machine control memory PARITY An error detection method whereby a single bit is added to a group of bits to make the total number of 1 bits either even or odd depending on the type of parity even or odd PART PROGRAM list of codes that control the movement of the machine May be typed into the machine control or produced as a computer text file and transmitted to the control PARITY ERROR Indicates that the total number of 1 bits in a received character does not agree with the type of parity expected RS232 C An asynchronous serial interface standard that specifies an electrical functional and mechanical interface specification between data communication devices RTS Request To Send One of the control lines used in RS232 communication Found on pin 4 or 5 on DB25 and 7 8 aDB9 connector depending on whether the port is DCE or DTE RTS CTS Hardware handshaking flow control using the RTS and CTS control lines Rx Receive Data Refers to the input for the data signal SG Signal Ground Refers to the ground for the data signal Not the same as the cable s shield ground or a device s frame ground START BIT The first bit used to frame an asynchronously transmitted character Its logic lev
21. ng the reset button on a PC This should not have to be done on a regular basis but as with anything electronic lockup can happen Page 117 Memex Technical Support amp Service In case of technical difficulty with the Mx1100 UMI BTR be sure to review the troubleshooting section of this manual prior to calling for technical support If the issue cannot be resolved after reading through the troubleshooting section please contact Memex Automation Technical Support at 1 905 635 3042 Page 13 of this manual may be used to record technical information service advice etc as needed If you have any other questions or concerns need answers to technical questions or need information about Memex products and or services please contact your local Memex dealer or contact Memex Automation Memex Automation Inc 200 3425 Harvester Rd Burlington Ontario L7N 3N1 Canada Phone 905 635 3040 Fax 905 631 9640 Web www memex ca Email sales memex ca support memex ca Notes 13 _ Mx1100 UMI BTR User s Manual Page 119 Glossary ANSI American National Standards Institute The official US agency and voting representative for ISO This institute develops information exchange standards above 50 Mbps ASCH American Standard Code for Informational Interchange A seven bit alphanumeric code used extensively in data communications A parity bit is often added to the seven bit code for error detection See Appendix page 20 fo
22. option and does not apply when you are using a BTR Turn this option off in the control s parameters The control generates a Tape Horizontal TH alarm Tape Horizontal is equivalent to Even parity Use Even parity when sending the programs from the terminal or PC Also see Notes 7 and 8 above jumper A4 and or 7 may resolve this The Power LED lights but the STATUS LED doesn t flash Check the supply voltage to the BTR If using a 5VDC supply and it is less than 4 6VDC the BTR may actually be protecting itself from under voltage Find a better SV supply or switch to 24V see Note 1 b or use the screw down terminal in the 12 13 bottom left corner with a supply of 7 to 24VDC Always be sure to set up the power jumpers correctly see Notes and 2 Other machine errors Ensure that the proper tape codes are being used at the beginning and or end of the program Some machines require a percent sign as the first and or last character in the program Check the CNC Operator s Manual for any termination characters that may be required What if the BTR Locks Up Near the upper left corner of the BTR are the four pins labelled RESET and LOAD Of those four pins the top two are the reset pins Momentarily shorting the two RESET pins by touching them with a metal object such as a screwdriver or coin while the power is on will reset the BTR and make the STATUS LED flash This action is the equivalent of pressi
23. r a table of ACSII values ASYNCHRONOUS TRANSMISSION The transmission of characters separated by time intervals that vary in length usually in accordance with the key entries of a terminal operator Start and stop bits are used to identify frame the beginning and end of the asynchronously transmitted character BAUD RATE The rate at which a signal is changed or modulated Refers to the number of bits transmitted per second BTR Behind the Tape Reader An electronic input device that emulates a Tape Reader s signals on a machine control usually converting serial communications to parallel Tape Reader signals CNC Computerized Numerical Control An industrial computer that is used to control the movement of a machine A CNC usually uses programs coded with G codes and M codes CONTROL Refers to a Computerized Numerical Control CNC CTS Clear To Send One of the control lines used in RS232 communication Found on pin 4 or 5 ona DB25 and pin 7 or 8 on a DB9 depending whether the port is DTE or DCE DCE Data Communication Equipment Typically a modem or data set used to interface a terminal or computer to the telephone lines DNC Direct Distributed Numeric Control A means of communicating or drip feeding a program to a CNC through a Tape Reader or serial interface The program code is immediately executed block by block as it is read by the control DTE Data Terminal Equipment In data communications it is an end user or termination
24. ric Controls CNC With true onboard memory the CNC had much greater capabilities and inevitably programs got longer and the need for more memory grew With control memory being expensive and limited DNC has remained the only way some modern manufacturers can operate Tape Readers are still commonplace on modern controls today However thanks to serial DNC capabilities many shops use Tape Readers for backup purposes only The modern equivalent of a Tape Reader is the BTR interface board which emulates paper Tape Readers The Mx1100 UMI BTR is a microcontroller based interface board that allows communications with a machine control for the purposes of loading programs into memory or running BTRs generally connect to a computer and permit a programmer to send a complete formatted program to the machine control The machine then loads the program as if from tape either to memory for later execution or for immediate block by block execution DNC Because the Mx1100 UMI BTR emulates the Tape Reader the control really has no way of knowing that the source of the program is a computer port instead of a tape The Mx1100 UMI BTR eliminates punching of tape has no moving parts can handle transfer speeds that are 20 times that of a Tape Reader uses the programmed source file is less expensive than a Tape Reader allows the Tape Reader to still be used supports the use of the control s punch capability and does not require maintenance It
25. s no wonder that the BTR in combination with DNC software has become the preferred alternative to using the Tape Reader and in many cases to upgrading CNC memory While the Memex BTR gives the machine control the ability to receive programs from a PC it has nothing to do with the specifics of what is being sent to the control DNC software or at the very least some form of serial communications software is responsible for transmitting the data to the control and the control expects that data to be in a specific format The part program must be formatted just as it would be for punching to tape and the DNC software must be configured to send it as if it were a tape The acts only as a gateway or port to the control The required program format is usually described in the control s Operations Manual Please consult the manual for information on how to configure the part code programs for the control Should you have any questions concerning BTRs you are welcome to call us any time See page 12 or back cover for contact information 17 Installation Instructions Unpacking the Mx1100 UMI BTR Package Contents e x Mx1100 Serial BTR Supplied e 1x Sanyo Interface Cable Supplied e x BTR Tape Mode Switch Supplied e Installation amp User s Manual Supplied Optional Items e Facit 4070 Punch Port Interface Cable Optional
26. to use a multimeter to determine whether there is a break or a short in the wires somewhere along the length of the cable If a hardware handshaking cable is being used the leftmost CTS LED in the STATUS LED bank at bottom centre of the BTR will light up when a properly configured cable is connected between the BTR and a computer and both are powered on The leftmost RTS LED will always be on indicating that the BTR is active and the port is ready Regardless of which type of handshaking is being used the leftmost RX LED will blink when data is sent to the BTR and the leftmost TX LED will blink during any Xon Xoff handshaking that might occur during the send The whole file sends before pressing Cycle Start The most common cause of this is incorrect handshaking settings Refer to Note 6 above In addition some terminal programs expect the XOFF character normally Hex 13 to include even parity making it Hex 93 Try setting jumper A4 ON see page 18 A CNC error occurs shortly after pressing Cycle Start Try removing the CR carriage return characters from the program Some controls only accept pure ISO or EIA code which does not contain CR characters Also try changing BTR jumper A7 in case it s a matter of ISO EIA format mismatch The control generates a Tape Vertical TV alarm Tape Vertical checking was a way that controls verified the accuracy of the program code they read in through the Tape Reader It is usually an
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