PMDX-112 Parallel Port Electrical Simulator & Tester User`s Manual
Contents
1. So g Prti Eae a 9 mumini 2 mao E5 OTT v wid SERVO RUNI nome TN ogr DISABLEDS 2T ost ENABLED GND lt 5 PULSE SOURCE EZ m SELECTOR sacs OD A FOR PINS SAES EEn Us Figure 5 Servo Motor Interface Toggle switch SW 25 labeled SERVO RUN determines when the servo motor driver is enabled This switch has three settings SW 25 Setting Servo Driver State S A5 setting P OK Servo driver enabled only when Charge Pump OK signal is active Seesection 2 4 for more information on the charge pump DISABLED Servo drive always disabled H Bridge outputs turned off He RE ABLED Servo driver always enabled Table 5 Servo Run switch settings The PMDX 112 provides several connectors that can be user for wiring to a servo motor and encoder These are described in tables 6 and 10 below Usage encoder table 10 for the pin out for this connector J9 and J12 Screw terminal J9 provides the positive and negative motor connections and J12 connectors allows you to connect an external single ended encoder which is usually either an encoder mechanically connected to the servo motor or a manual pulse generator MPG Table 6 Servo Motor and Encoder Connectors 2 10 1 Servo Motor Current Sense Screw terminal connector J13 see figure 5 provides access to the servo motor current sense circuit Using this connector you can measure the servo motor current using the equation s2. 13 and 15 The choices are on board pulse generator see section 2 6 on board encoder MPG see section 2 7 or external encoder or MPG see section 2 9 N ote that you must also set the parallel port monitor toggle switches for pins 13 and 15 to Drive from Pulse Source see section 2 5 The following table shows all switch settings related to connecting pulse sources to parallel port pins 13 and 15 PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 8 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual PCB Revision PC B 468A Document Revision 0 2 O n board pulse generator to pin 13 SW 20 set to desired pulse generator function SW 18 If SW 20 is Burst then set SW 18 to the desired pulse frequency range and Vernier Burst Freq trim pot adjusted for desired frequency SW 21 Pulse Source Selector for pin 13 in up position labeled PULSE GEN SW 16 for pin 13 in the parallel port pin monitor and control section see section 2 5 set to Drive from pulse Source O n board pulse generator to pin 15 SW 20 set to desired pulse generator function SW 18 If SW 20 is Burst then set SW 18 to the desired pulse frequency range and Vernier Burst Freq trim pot adjusted for desired frequency SW 22 Pulse Source Selector for pin 13 in up position labeled PULSE GEN SW 17 for pin 15 in the parallel port pin monitor and control section see section 2 5 set to Drive from pulse Source O n board
3. ground see note below Table 1 Parallel Port Monitor amp Control Switch Settings W hen the PMD X 112 is driving a parallel port signal either from the pulse generator or pulling to ground there is a 100 ohm resistor between the PMDX 112 and the parallel port connectors This is to prevent damage to the PC s parallel port or other device in cases where the PMD X 112 is drivingthe signal one way and the PC is trying to drive it the other way In this case the PMDX 112 will see the signal as determined by the switch and the PC or other device will see its output signal 2 6 Pulse Generator The PMDX 112 contains a variable frequency pulse generator which can be set to generate a single positive going pulse a single negative going pulse or a variable frequency pulse stream burst mode The output of the pulse generator can be routed to any of the PC parallel port pins see section 2 5 Note that for parallel port pins 13 and 15 there are additional switches to select the pulse source see section 2 8 Two toggle switches determine the characteristics of the pulse stream that is generated The left hand toggle switch labeled SW 20 see figure 4 selects between two single pulse modes and continuous or burst mode See table 2 for more information Te right hand toggle switch labeled SW 18 determines the range of frequencies for the burst pulse stream This switch along with the Vernier Burst Freq ad
4. PMDX 112 Parallel Port Electrical Simulator amp Tester TO EQUIPMENT TO COMPUTER CHARGE PUMP OK in j R wii i je o o eee RU d FAL ERE III EA TET AT uy ds e PULSE SOURCE T PULSE GENERA TM NE EFE wrist FOR nine Bt z Ec pao wy PE SLID AER PASE us Ea Tid xoxo r Imo O 1 EXT SERVO mY L3 totus in apa Ur www PMDX com ES NBI CE oin wd 9 Parallel Port Electrical Simulator amp User s Manual PRELIMINARY Document Revision 0 2 Date 13 March 2009 PCB Revision PCB 468A PMDX W eb http www pmdx com 9704 D Gunston Cove Rd Phone 1 703 372 2975 Lorton VA 22079 2366 USA FAX 1 703 372 2977 PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 1 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual PCB Revision PC B 468A Document Revision 0 2 Table of Contents J oc 3 11 Important Safety Information os eessscssscsssecsssesessssessnsessnseesssueessnssessnssesssuseessueessneessnisessseeessnaeessnateesnaes 3 2 Warranty SUMMA Y recs ocn tette rennen dr medien db nid pedea dbi qe on d pedet 3 1 3 FOALUPCS niaaa a uaaa aa aaa ERES 4 14 Updatesto this Manual ettet redo Ir n eint nianna d t dh 4 AEN 5 21e Parallel Port Confnectors e oe ct PR pn o e b pt d ER P i recs 5 2 2 Power SUDDly 5er tsao tentent so tambien der dtedadambie
5. Page 16 of 18 All Rights Reserved 2008 Practical Micro Design Inc e o zi N c I 5 a o 1D NN ci os To x a m acd PMDX 112 User s Manual PCB Revision PCB 468A Document Revision 0 2 4 0 Electrical and Environmental Specifications Power Power In 12 to 16 VDC regulated or unregulated TBD mA On Board Encoder 24 detent counts per revolution 96 quadature counts Stepper Motor TBD 96 full steps per revolution Servo Driver TBD Pulse Generator Three selectable frequency ranges Slow 5 Hz to 60 Hz approximately Medium 30 Hz to 600 Hz approximately Fast 250 Hz to 6 5 KHz approximately Duty cycle Varies with frequency Logic Inputs on connectors J1 J2 J3 J4 and J5 Min input high 2 0V referenced to a GND terminal Max input low 0 8V referenced to a GN D terminal Pulse D etector Minimum detectable pulse width is 50 ns Environmental Temperature 0 to 455 C Relative H umidity 2096to 8096 relative humidity non condensing PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 17 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual PCB Revision PCB 468A Document Revision 0 2 Appendix A Warranty Statement Practical Micro Design Inc PMD warrants that this hardware product is in good working condition according to its specifications at the time of shipment for a period of 90 days from the date it was s
6. U p to 1 SW 10 AF pin 14 Center position Monitor amp Pull Up to 1 Servo Toggle Switch SW 25 SERVO RUN Either CP OK or Enabled see Table 5 Connect a printer cable from the PC s parallel port to the PMDX 112 on J1 J2 or J3 all labeled To Computer In this configuration pins 1 and 14 on the PC s parallel port control the servo motor s operation as shown in table 4 on page 9 If the SERVO RUN switch is set to CP OK then pin 17 on the PC parallel port must be a valid charge pump signal in order for the servo motor to run see section 2 4 PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 11 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual PCB Revision PC B 468A Document Revision 0 2 2 10 4 Running the Servo from On Board Toggle Switches In order to allow the on board toggle switches to control the servo motor configure the PMDX 112 as follows Parallel Port Monitor Toggle Switches see section 2 5 SW 9 STB pin 1 Center position Monitor amp Pull Up to 1 SW 10 AF pin 14 Center position Monitor amp Pull Up to 1 Servo Toggle Switch SW 25 SERVO RUN Set to Enabled Disconnect any printer cable between the PMDX 112 and the PC The PMDX 112 cannot override the signals from the PC If the PMDX 112 is connected to a PC parallel port this will not work In this configuration toggle switches SW 9 and SW 10 control the servo motor s ope
7. cts especially conductive byproducts of machining operations should be utilized with this board Interlock switches on power circuits should remove power when the enclosure is opened Automated machine tools into which the PMD X 112 may be integrated can cause injury Precautions should be taken to assure that operators are trained intheir proper operation and safety procedures and that they are protected from moving parts that m y be under remote control and may move unexpectedly This product may not be used in life support or other critical safety applications 1 2 Warranty Summary The PMDX 112 is warranted against failure due to defective parts or workmanship for 90 days from the date of sale Refer to Appendix A for complete warranty details If you have an item requiring service please see the support page on the PMD X web site http www pmdx com for return instructions The purchaser must pay shipping toxreturn the unit to PMDX W e will ship the repaired unit back to you via ground transportation at our expense Repairs are normally completed within 10 business days See Appendix A for our complete warranty details PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 3 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual Document Revision 0 2 1 3 Features The PMDX 112 has the following features e LED Indicators for every input and output on the PC s parallel port e Toggle switches
8. encoder to pins 13 and 15 SW 21 and SW 22 Pulse Source Selector for pins 13 amp 15 in middle position labeled On Board Encoder M PG SW 16 and SW 17 for pins 13 amp 15 in the parallel port pin monitor and control section see section 2 5 set to Drive from pulse Source External servo encoder to pins 13 and SW 21 and SW 22 Pulse Source Selector for pins 13 amp 15 15 in down position labeled Ext Servo Encoder M PG SW 16 and SW 17 for pins 13 amp 15 in the parallel port pin monitor andscontrol section see section 2 5 set to Drive from pulse Source Table 3 Pulse Generator Mode Switch SW 20 Settings 2 9 External Encoder MPG TBD for now see section 2 10 and specifically the mention of connector J12 in table 6 on page 10 2 10 Servo Motor Driver The servo motor driver is an H Bridge driver The two halves of the H Bridge are controlled by pin 1 and pin 14 on the PC s parallel port Table 4 shows the servo motor response to the two control signals Low 0V Low 0V High 5V Low 0V 5 Low 0V High 5V Motion in opposite direction High 5V High 5V No Motion brake recirculate Table 4 Servo Driver Operation PMDX 112_Manual_02 doc 2008 Practical Micro D esign Inc Page 9 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual PCB Revision PCB 468A Document Revision 0 2 o vp z poe 35 CUT ve e O Q ee seo Mt Speer Shae
9. enerates a single negative going pulse i e from approx 5V to approx OV then back to approx 5V To generate another pulse release the button and press it again Table 2 Pulse Generator Mode Switch SW 20 Settings Pulse Enable Push Button The button controls the output of the pulse generator W hen in single pulse mode SW 20 up or down see table 2 each time the button is pressed outputs single pulse W hen in burst mode SW 20 in the center position pulses are output as long as the button is pressed Releasing the button stops generating pulses Vernier Burst Freq W hen in burst mode SW 20 in the center position see table 2 thistrim pot adjusts the pulse frequency within the range selected by SW 18 Turningthe trim pot fully counter clockwise sets the pulse generator to the minimum frequency and full clockwise sets the pulse generator to the maximum frequency 2 7 On Board Encoder MPG The PMDX 112 includes an on board encoder also called a Manual Pulse Generator MPG The encoder is located in the lower right hand corner ofthe board see figure 4 The encoder outputs two quadrature signals that can be routed to parallel port pins 13 and 15 by the Pulse Source Select switches see section 2 8 The encoder generates 24 counts per revolution 2 8 Pulse Source Select Pins 13 amp 15 The two switches SW 21 and SW 22 see figure 4 determine which pulse source is routed to parallel port pins
10. hipped from PMD Should the product in PMD s opinion malfunction within the warranty period PMD will repair or replace the product without charge Any replaced parts become the property of PMD This warranty does not apply to the software component of a product or to a product which has been damaged due to accident misuse abuse improper installation usage not in accordance with product specifications and instructions natural or personal disaster or unauthorized alterations repairs or modifications Limitations All warranties for this product expressed or implied are limited to 90 days from the date of purchase and no warranties expressed or implied will apply after that period All warranties for this product expressed or implied shall extend only to the original purchaser The liability of Practical Micro D esign Inc in respect of any defective product will be limited to the repair or replacement of such product Practical Micro Design Inc may use new or equivalent to new replacement parts Practical Micro D esign Inc makes no other representations or warranties as to fitness for purpose merchantability or otherwise in respect of the product No other representations warranties or conditions shall be implied by statute or otherwise In no event shall Practical Micro D esign Inc be responsible or liable for any damages arising a from the use of the product b from the loss of use of the product c from the loss
11. hown below PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 10 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual PCB Revision PCB 468A Document Revision 0 2 Eq 1 Maximum Motor Current in Amps 3 Rsense 1 6 The default Rsense installed on the PMD X 112 is 1 0 ohms So the above equation becomes Eq 2 Maximum Motor Current in Amps 3 1 1 6 0 5 Amps Resistors added via J13 will be in parallel with the on board 1 0 ohm resistor Calculate the new effective sense resistance 1 ohm in parallel with external resistor and plug that into Eq 1 to calculate the maximum motor current 2 10 2 External Servo Motor Connectors TBD Table 7 J9 External Servo Motor Screw Terminal Pinout TBD Table 8 J12 Exgernal Encoder MPG Screw Terminal Pinout TBD Table 9 J15 External Servo Motor and Encoder Ribbon Header Pinout Description Description 1 Encoder 5V supply Servo Motor 6 2 Encoder Phase A 7 No Connect 3 Encoder Phase B 8 No Connect 4 No Connect 9 Servo Motor l Encoder ground reference Table 10 J16 External Servo Motor and Encoder 9 pin D Pinout Un 2 10 3 Running the Servo from the PC Parallel Port In order to allow the PC s parallel port to control the servo motor configure the PMD X 112 as follows Parallel Port Monitor Toggle Switches see section 2 5 SW 9 STB pin 1 Center position Monitor amp Pull
12. ical and Environmental Specifications n serre eie eiese nen an nana nnn umana 17 Appendix wA gi 18 PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 2 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual PCB Revision PCB 468A Document Revision 0 2 1 0 Overview This document describes the configuration and operation of the PMD X 112 Parallel Port Electrical Simulator and Tester This document pertains to the following versions of the PMD X 112 Circuit Board Revision PCB 468A marked on the bottom of the board 1 1 Important Safety Information The PMDX 112 is intended for integration by the purchaser into industrial control systems It is solely the purchaser s responsibility to assure that the system is configured in a manner consistent with applicable safety requirements Practical Micro D esign Inc does not control how this board is integrated into the purchaser s system and cannot be responsible for guaranteeing the safety of your system The PMDX 112 is not guaranteed to be fail safe The system into which the PMD X 112 is installed should provide fail safe protection and emergency stop capability The PMDX 112 contains circuitry that may be connected to dangerous voltages Care must be taken that user cannot come in contact with these voltages An enclosure that allows for adequate ventilation but prevents intrusion by operator s hands and foreign obje
13. justment pot determines the frequency of the burst mode pulse stream See section 4 0 for the range of available frequencies N ote that while the user can adjust the frequency of the pulse stream the duty cycle is determined by the hardware design and varies with frequency ce cENERATOR PULSE SOURCE S3 PULSE GENERATOR SELECTOR et EE rao tOV ind FAST FOR PINS sagan gave 12 bd se 900 SLOW a PULSE GEN swig 3 o ON BOARD _ PULSE jo oOkws ENCODER MPC mb p EXT dit e a V FREQ 77 9 7 ENCODER MPG Quad uadrature Figure 4 Pulse Generator Pulse Source Selctor and Encoder MPG PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 7 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual PCB Revision PC B 468A Document Revision 0 2 EE a msnm eem SW 20 Function when PULSE ENABLE button is pressed Up dX Generates a single positive going pulse i e from approx OV to approx 5V then back to approx OV To generate another pulse release the button and press it again Center Burst Generates pulses for as long as the button is pressed The pulses stop when the button is released The pulse frequency is determined by the right hand switch SW 18 and the variable resistor labeled Vernier Burst Freq Fast 250 Hz to 6 5 KHz approximately Medium 30 Hz to 600 Hz approximately Slow 5 Hz to 60 Hz approximately Down __ G
14. mtambiaqdamitamatembina tane 5 23 Edge Pulse Detector o re tr pi ig e e e E p et 5 2 4 Charge Pump t o e dr a i o d b b i RR ta n 6 25 Parallel Port Pin Monitor amp Control tennis nitent 6 2 0 P lse GetneraOE sadi t ratu nin A eri tes des Dr DD Dre 7 2 7 On Board Encoder MPG iiias a n v CP A 8 2 8 Pulse Sourca Select Pins 13 G 15 iranin t a vam d E 8 2 9 External Encoder M PG sssssssseeseeee nennen tennis ttti ttti ttti ttti ttti itttond 9 240 Servo Motor D river tnnt trennen tnnt nitet titt nitent ttti ttti ttti ttt nita 9 2 10 1 Servo Motor Current Sense tene tttenttnentt tentent ttti ttt ttes itte siti 10 2 10 0 External Servo Motor Connectors tnnt ttti tti ttti 11 2 10 3 Running the Servo from the PC Parallel Port 11 2 10 4 Runningthe Servo from On Board Toggle Switches 12 2 10 5 Running the Servo from the On Board Pulse Generator 12 211 Stepper MOtOT etre dente price c re Na Nate tei lene eed dee ded Dr en en 13 2 11 1 External Stepper Motor Connector darent 14 2412 Runningthe Stepper Motor from the PC Parallel Port 14 2413 Running the Stepper Motor from O n Board Toggle Switches sse 14 2414 Running the Stepper Motor from the O n Board Pulse Generator 14 2 12 Prototype Area ceteri NEN Moe POM e a t d le enn i P Re a te 14 3 0 Mechanical Specifications 5 1 12 eere ien dee sees sena n anam a tnam anam asma ana sna taam amanan nn uS uA 16 40 Electr
15. of revenue or profit resulting from the use of the product or d asaresult of any event circumstance action or abuse beyond the control of Practical Micro Design Inc whether such damages be direct indirect consequential special or otherwise and whether such damages are incurred by the person to whom this warranty extends or a third party PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 18 of 18 13 March 2009 All Rights Reserved
16. on direction A at drive from pulse source monitor amp pull up to 1 full speed until the Pulse Enable button is pressed at which point speed is determined by pulse frequency see note below Up Down Do not use motor will run but no speed drive from pulse source Drive to 0 control is possible Center Up Motor turns in the other direction direction monitor amp pull up to 1 drive from pulse source B at full speed until the Pulse Enable button is pressed at which point speed is determined by pulse frequency see note below Down Up Do not use motor will run but no speed drive to 0 drive from pulse source control is possible Center Center Motor does not run brake re circulate mode monitor amp pull up to 1 monitor amp pull up to 1 Down Center Motor runs full speed in direction A drive to 0 monitor amp pull up to 1 Center Down Motor runs full speed in direction B monitor amp pull up to 1 drive to 0 Down Down Motor does not run freewheel drive to 0 drive to 0 Table 11 Servo from On Board Pulse Generator Switch Settings The servo motor speed is actually controlled by the duty cycle of the pulse generator There is no direct control over duty cycle however because of the design of our pulse generator the duty cycle is related to frequency and will therefore vary the motor speed a
17. on pin 17 when it is ready to control the servo motor See section 2 10 for more information on the servo motor driver 2 5 Parallel Port Pin Monitor amp Control The PMDX 112 contains circuitry that allows you to see the current state of each parallel port signal and optionally to control each parallel port signals For each signal on the parallel port the PMD X 112 has an LED that indicates the current state of the signal on for logic 1 or high off for logic 0 or low and a switch that determines how the PMD X 112 treats the signal UO PIN f STH O Parallel Port Electrical Simulator amp Tester www PMDX c Figure 3 Parallel Port Monitor amp Control ao Meme 10 11 12 13 15 PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 6 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual PCB Revision PCB 468A Document Revision 0 2 Switch Position Label Up Drive from Pulse Source The PMDX 112 s pulse generator drives this signal see section 2 6 Parallel port pins 13 and 15 can also be driven from the on board encoder MPG or from a remote encoder see section 2 8 See also the note below Center Monitor and Pull Up to 1 The PMDX 112 provides a 4 7K ohm pull up resistor to 45V which can be over driven by the PC or other device connected to the parallel port connectors and also displays the current state of the signal The PMDX 112 pulls the signal to
18. ration Toggle these switches from the center position to the down position to control the servo H bridge as shown in table 4 on page 9 2 10 5 Running the Servo from the On Board Pulse Generator In order to allow the on board pulse generator to control the servo motor configure the PMD X 112 as follows Parallel Port Monitor Toggle Switches see section 2 5 SW 9 STB pin 1 See description in table 11 below SW 10 AF pin 14 See description in table 11 below Pulse Generator Toggle Switches SW 20 Set to Burst center position SW 18 Set to desired frequency range R138 Vernier Burst Freq Set for desired frequency Servo Toggle Switch SW 25 SERVO RUN Set to Enabled Disconnect any printer cable between the PMDX 112 and the PC The PMDX 112 cannot override the signals from the PC If the PMD X 112 is connected to a PC parallel port this will not work In this configuration toggle switches SW 9 and SW 10 control which side of the H bridge the pulse generator drives Table 11 shows the settings for SW 9 and SW 10 and their effect on the servo motor PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 12 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual Document Revision 0 2 PCB Revision PCB 468A SW9 SW 10 Motor operation Up Up Do not use motor should not turn drive from pulse source drive from pulse source Up Center Motor turns in one directi
19. s on the PMD X 112 The PMDX 112 provides two sets of parallel port connectors e Ones labeled To Computer One of these three connectors should be connected to the PC s parallel port The three connector types are Centronics 25 pin D and 26 pin ribbon cable e Ones labeled To Equipment O ne of these connectors should be connected to the target device The two connector types are 25 pin D and 26 pin ribbon cable W hen using 25 pin D to 25 pin D cables the pinout should be straight through i e pin 1 to pin 1 etc Do not use a 25 pin null modem cable The ribbon header pinout is compatible with ribbon to 25 pin D cables and with ribbon to ribbon cables for use with a Smooth Stepper or other device that uses ribbon headers with the standard pinout for PC parallel ports o 0000090000000 000000200000 Lig o Oo goooo o oooo00 Q ccoccoccecccce Q ed o0990000099 2606096069906 i poecoeosaooneosae PLETER E OE 1 FL m J 4 A aD E P TO COMPUTER TO EQUIPMENT 065 00060 0609500206225 006299000200020000000 TO COMPUTER 21 Figure 1 Parallel Port Connectors 2 2 Power Supply The PMDX 112 requires a power supply that produces 12 to 16 VDC regulated or unregulated at TBD mA There are two alternate connectors for connecting the power supply to the PMD X 112 J6 co axial connector with center pin positive J7 Screw terminal connector 2 3 Edge Pulse Detector The PMDX 112 provides
20. s you adjust the trim pot 2 11 Stepper Motor The PMDX 112 comes with a stepper motor that provides 96 full steps per revolution The stepper motor direction is controlled by the RC parallel port pin 8 and parallel port pin 9 generates the step pulses Alternatively you may unplug the in board stepper motor from the circuit board and connect an external stepper motor to connector J14 see figure 6 below The PMDX 112 can drive the stepper motor in full step mode 96 steps per revolution for the on board Stepper motor or quarter step mode 384 steps per revolution for the on board stepper motor Or you can disable the stepper motor for when the parallel port signals will be used for some other purpose Toggle switch SW 24 determines the stepper motor mode as shown by the silk screen text next to the switch see 6 below PMDX 112 Manual 02 doc 13 March 2009 2008 Practical Micro Design Inc Page 13 of 18 All Rights Reserved PMDX 112 User s Manual PCB Revision PCB 468A Document Revision 0 2 FULL STEP O RICS Ce m QTR STEP lpi SWIA er Segsm sABE Z E E EOS ORIS C B Hpac po C emma tA O e LA G u TU mal p LM ATTIE 96 Full Steps Rev DIR Pin 8 STEP Pin 9 Figure 6 Stepper Motor Interface 2 11 1 External Stepper Motor Connector TBD meanwhile see figure 6 above 2 11 2 Running the Stepper Motor from the PC Parallel Port To have the PC s parallel port run the stepper mo
21. to control every parallel port signal e Two pulse detectors that can monitor any parallel port signal e Built in stepper motor drive and motor 1 4 Updates to this Manual PCB Revision PCB 468A Built in servo driver with optional servo motor Built in pulse generator with single pulse and variable frequency continuous pulse modes Charge pump circuit Manual Encoder MPG C heck the PMD X web site for revisions or updates to this manual http www pmdx com The latest revision of this manual is available on the PMD X 112 page follow the links from the main page PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 4 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual PCB Revision PCB 468A Document Revision 0 2 2 0 Operation The following sections describe the various sections of the PMD X 112 and how to use them 2 1 Parallel Port Connectors The PMD X 112 can perform several different functions e Actasa target device when connected to a PC s parallel port e Act asa parallel port simulator when connected to some device in place of a PC e Actasa parallel port monitor and or simulator when connected in between a PC and some device In this configuration the PMDX 112 can pass through any or all of the signals between the PC s parallel port and the target device or it can over ride some or all of the signals between the PC and the target device and drive them as determined by switche
22. tor put toggle switch SW 24 to either the center Qtr Step or up Full Step positions Then pin 8 on the parallel port becomes the direction signal and pin 9 becomes the step signal 2 11 3 Running the Stepper Motor from On Board Toggle Switches TBD 2 11 4 Running the Stepper Motor from the On Board Pulse Generator TBD 2 12 Prototype Area The prototype area provides a grid of inter connected holes that can be used to add custom circuitry to the PMDX 112 The layout and connections ofthe prototype area is shown in figure 7 PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 14 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual Document Revision 0 2 L O O O O O O O O O O O 0606000060506 88 0 0 0 0 0 0 0 0 0 0 0 ND 555555555555 533333228332 E NO 0 0 0 0 6 6 6 6 6 6 6 45V tl G 0 0 0 0 0 0 0 0 0 0 0 GND d O OO DOO OU 0000 GC 1000006060000 L O O O 0 0 0 0 O O O O Figure 7 Prototype Area PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc 13 March 2009 All Rights Reserved PCB Revision PC B 468A Page 15 of 18 PCB Revision PC B 468A PMDX 112 User s Manual Document Revision 0 2 3 0 Mechanical Specifications 5 000 002 0 00070 T 4000 0 E N DaDa E E SE 00g1l 0009 a 00270 008v prewpueu 9 JO Jejeujeip OG FO s joy Buljunow uoee 9 Figure 8 PMDX 112 Dimensions and Mounting Holes
23. two edge pulse detectors Each detector can be configured to monitor any signal on the parallel port The detector s LED will flash whenever the PMD X 112 detects a rising edge falling edge or pulse To select a signal to monitor install the jumper clip on the pins below parallel port PMDX 112 Manual 02 doc 2008 Practical Micro Design Inc Page 5 of 18 13 March 2009 All Rights Reserved PMDX 112 User s Manual PCB Revision PCB 468A Document Revision 0 2 pin number For example in figure 2 the top detector is set to monitor parallel port pin 15 and the bottom detector is set to monitor parallel port pin 10 M Detector Pin Selection o 0S4 7 e v a P het at hed A ooooooooooooooMoco eens demote oo KL HHH HHE EDGE PULSE DETECTORS Figure 2 Pulse Detector 2 4 Charge Pump The PMDX 112 contains a charge pump circuit This circuit monitors parallel port pin 17 If there is activity on that pin usually a square wave higher than 100 Hz then the Charge Pump OK LED will turn on This can be used to verify that the software you are running on the PC is generating a valid charge pump signal for use with other PMD X break out boards In addition the Charge Pump OK signal can be used to enable the servo motor driver This is useful if you are testing servo control software and you don t want th servo motor running before the software is ready You can configure the software to generate a valid charge pump signal
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