PMDX-122 Rev D User`s Manual
Contents
1. pin12 JP1 JP3 MB not EStop fault pin13 n 5V Lll Outputs Enabled Ploin29coM LEl cp ok amp not EStop fault pints Flo GND pin2 ping COM pin4 pins COM pin pin COM is NA Se AN 4 co DU DU O a a lt gt gt 6 2256 o 0 Hh 0 m m m m gt c gt oc OPTICAL OPTICAL ENCODER ENCODER Figure 11 Configuration with Daisy C hained PMDX 122 Boards and Encoder Inputs PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 29 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 8 0 Mechanical Specifications lt 4 500 D OQ Y a 4 150 gt p 0 175 2 650 000 E 4 each 0 150 dia holes for 6 screw 0 175 A Figure 12 PMDX 122 Dimensions and Mounting Holes WARNING The PMDX 122 should be protected from liquids dirt or chips especially metal chips which can cause shorts coming in contact with the board PMDX 122_Manual_112 doc 2005 2013 Practical Micro D esign Inc Page 30 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 9 0 Electrical and Environmental Specifications Main Power 7 to 12 VDC or 9 VAC input 200 mA input via J11 or J5 or J8 OR Regula2. 4 4 Relay Contact Connector J7 The PMDX 122 provides a relay with both a normally open and normally closed contact See section 3 24 for more information Pin Number Label Description N ormally O pen relay contact i e open when relay is not energized RLY Te N ormally Closed relay contact i e closed when relay is not energized Table 16 Relay Contact Output Connector Pin Out J7 4 5 Control Output Connector J8 Pin Number Label Description Cd x p ww o Auxiliary 5V output for external sensor power OR regulated 5V DC input see section 3 6 2 Pinl4 Controloutputfrom PC parallel portpinl4 Control output from PC parallel port pin 17 or logic level indicating Pin 17 whether the buffer is enabled or disabled depending on the setting of jumper JP4 see section 3 2 3 Alternate power input terminal also acts as a daisy chain unregulated 5 PWR Altin power output when the board is powered via the coax power connector J11 6 GND Ground connection Table 17 Control Output Connector Pin Out J8 NOTE Dueto logic inside the PC some control outputs are inverted This means that that writing a 1 to a bit in the control register may result in a logic low at the 25 pin D connector Please refer to technical documentation on the PC parallel port or your control software for more information PMDX 122_Manual_112 doc 2005
3. Just make sure that your wiring between the PMD X 122 and the stepper drivers matches your Mach3 configuration PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 5 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above WARNING Do not use this configuration with non isolated stepper drivers Doing so may damage the stepper drivers and the PM DX 122 For non isolated drivers see section 2 2 l Ses e I a Ie E l J9 GND normal bo JP4 ps out Jjpo a always pin17out DIR LE pin 2 9 enable Ok t LN ok E Stop switch O pinte normally closed ies JP1 Bom j i pn LEE m utputs Enable or jumper wire Q ME Q pints COM MEN cp ok amp not EStop fault O eno pin2 ping COM pin4 pins COM pin6 pin COM OQAS 10 NONWINCO OQAS 10 NOWWOO OdASt 10 NOWINOO GECKODRIVE GECKODRIVE GECKODRIVE GECKODRIVE Figure 1 Configuration w Mach3 charge pump and Gecko stepper motor drivers 2 2 Example with Mach3 Charge Pump and PMDX 150 Stepper Drivers Figure 2 shows a standard configuration using Mach3 software on the PC driving the PMDX 122 The PMDX 122 is in turn connected PMD X 150 stepper drivers which have opto couplers that require a ground reference on their common terminal Not all opto isolated stepper drivers require a ground refe
4. J12 the USB connector see section 4 8 Regulated Regulated 5V DC 5 J5 screw terminal connector pins 1 and 6 5V DC see section 4 2 and note below or J8 screw terminal connector pins 1 and 6 see section 4 5 and note below Table 8 Summary of PMDX 122 Power Sources PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 18 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above If using either connector J5 or J8 as an input for regulated 5V D C power to the PMD X 122 the other connector may still be used as a 5V DC output provided that your regulated power supply can supply sufficient current for the PM DX 122 and any other devices you connect For example if you connect a regulated 5V DC power source to J8 pins 1 and 6 you can still use J5 pins 1 and 6 as a 5V DC power source for sensors etc In this case your regulated DC power supply must be capable of supplying 200 mA plus the current required by your devices 4 0 Summary of Connector Pinouts The PMDX 122 contains several connectors as listed in Table 9 below Refer to the following tables for details on the pin outs for each connector For all connectors pin 1 is the pin closest to the reference designator i e J1 pin 1 is the pin closest to the J1 text on the circuit board In addition all connectors have square pads on pin 1 loo
5. PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 17 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above PMD X 122 see Figure 8 and Figure 9 The signal is not inverted on by the PMDX 122 A logic high on the E Stop input is output as a logic high onto parallel port pin 10 W hen the E Stop is used as a general purpose input the Fault input can be set to default to either active or inactive See section 3 4 1 for more information 3 4 2 3 E Stop LED DS10 The E Stop LED is located next to connector J6 and is labeled E Stop active The LED indicates the state of PC parallel port pin 10 which is driven by the E Stop input and optionally by the Fault input The LED is on when the E Stop input is high active If jumper JP6 is configured as normal then the LED will also be on when the Fault input is low active See sections 3 4 2 E Stop Input and 3 4 1 Fault Input for more information on these signals 3 5 Charge Pump watchdog The charge pump circuit also called a watchdog circuit is designed to disable the PMD X 122 control outputs and optionally the data bus outputs when the software running on the PC stops working properly It does this by monitoring pin 17 on the PC parallel port W hen this signal is toggling between high and low the charge pump is O K W hen pin 17 stops toggling the char
6. your control software for more information Mach3 and other CN C programs should automatically co mpensate for this PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 14 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above PC Connector 45V pin 11 Buffer E pin 12 pin 13 pin 15 D GND All four signals each have their own LED and pull up resistor lt EStop from E Stop and Fault circuit Figure 6 Block diagram of Status Input Circuitry 3 4 Fault and E Stop Inputs The PMDX 122 provides both E Stop emergency stop and Fault inputs The operation of each input is described in the following sections The function of the E Stop and Fault inputs depends on the configuration of jumper JP6 as shown in Table 7 and the block diagrams below Setting Label Description 0 The E Stop input is an emergency stop signal The Fault input has a 100K pull up resistor so that its default state is no fault The E Stop and Fault inputs combine to drive pin 10 into the PC parallel port and to optionally disable buffers on the PMDX 122 The E Stop input is a general purpose input and directly drives pin 10 into the PC parallel port without affecting the data bus and control outputs on the PMDX 122 board The Fault input has a 10K pull down resistor and a 100K pull up resistor
7. be used with motor drivers or general purpose logic signals that have non isolated TTL or CMOS logic style inputs Table 2 Pin 2 9 Common Jumper Settings JP1 The PMDX 122 has a protection diode between its 5V supply and the common terminals see Figure 4 This prevents any voltages that are accidentally applied to the common terminals from damaging the PMDX 122 A side effect of this diode is that the 5V that appears on the common terminals is less than 45V The actual voltage depends on the PMD X 122 s power source For AC or DC power viaJ11 the voltage is approximately 4 2V W hen using the USB connector for power the voltage may be slightly lower than 4 2V depending on several factors including length of the U SB cable and total load on the USB hub see sections 4 8 and 9 0 for USB hub requirements These voltages are sufficient to drive external opto isolators WARNING When connecting to non isolated motor driver inputs you must use the ground setting on jumper JP1 Do not connect the PM DX 122 s 5V reference to ground on the motor driver module Doing so may damage the buffers on the PM DX 122 and the inputs to the motor drivers 3 1 3 Data Bus Buffer Enable The PMD X 122 allows the E Stop Fault and charge pump circuits to disable the data bus buffers Jumpers JP2 and JP3 determine if and when the data bus buffers will be disabled Section 3 1 1 Data Bus Signals describes behavior of the data bus sign
8. Data Bus Connectors J1 J2 J3 and JA sese tnnt nnns 19 4 2 Status Input Connector J5 sse tnnt iia inniti testen 20 43 Fault and E Stop Connector J6 w ccsscsssscssssssssssssscssscssesssessscsssssnsssnssssssucssncssessssssusesussseessesssesseessesssessnssss 21 44 Relay Contact Connector J7 essent tnnt niti n 21 4 5 Control O utput Connector J8 ssseeseeeen nennen nennen trennen tres tnis testet titii ttes 21 4 6 PC Parallel Port Connectors J10 amp J9 sse rnnt nnt ttnn tantas anttnnt antt 22 4 4 Power Supply Connector J11 ssseeseeeeee nennt ntn ttt tte nitent ttt ttt tenia 23 4 8 USB Connector I12 5 5 2 72i condit cn tt iret th ii idera rb ca cis nere dr ce ra dr ee en e in Dna rea e a da 23 5 0 Summary of Jumper Configurations eene eise nne ne tnan nnn nana anna amata aS naa suam nua nn 24 6 0 Summary Of LEDS 27 7 0 Advanced Configurations s essessssennunnnnnnennunnnnununnnnnnnnnnnnunnnnunnnnnnnnn nnn nnnnnunnnnnn nnne nnmnnn nnana 28 71 Configuring a PMDX 122 to Emulate a PMD X 121 sse tnn 28 7 2 Example Daisy C hain PMDX 122 with Encoder Inputs sse 28 8 0 Mechanical Specifications eee eeeene riens sees en anna nnen nunnunum nam n uana mnnn sna usn nananana 30 9 0 Electrical and Environmental Specifications ce ener seen eene rnne nnn nn nana 31 Appendix R41
9. Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above PC Connector TON pin 1 AL m 45V Buffer pin 14 pin 14 pin 16 gt pin 16 pin 17 pin 17 see note below 10K Pwr Alt In GND All four signals from the PC have their own pull down resistor Serial number 24242 and above have 10K pull up on the OK pin 17 signal older boards have from EStop Fault Charge Pump a 10K pull down resistor All four signals have their own LED All except Strobe have their own pull down resistor To charge pump Figure 5 Block diagram of Control Output Circuitry The control inputs from the PC have pull down resistors except for the pin 17 signal on newer boards as noted in Figure 5 This ensures a known output level on the screw terminal connector logic low should the parallel port cable become unplugged Connector J8 also provides an auxiliary 5V output which can also be a regulated 5V input see section 3 6 ground reference and an alternate power supply input The 5V output can be used to power external opto couplers The PW R Alt In terminal provides a screw terminal alternative to J11 for connecting an AC or DC power source It also can be a daisy chain power output to a second PMD X 122 when power is supplied on J11 See section 7 2 for an example WARNING When using the Aux Power In on J8 pin 5 make sure that no power source is conn
10. See section 3 1 1 BREED utputs Enabled This LED is on when the control output buffers are enabled See section 3 2 1 REP un Input 4 each LEDs one for each status input signals on connector J5 Each LED is on when the corresponding status terminal is grounded or driven to a logic low See section 3 3 pin 1 This LED is on when the relay is energized See section 3 2 4 NE status LED pin 14 pin 16 and 3 each LEDs one for each control signal on connector J8 Each qu 17 LED in on when the corresponding control output terminal is control output LEDs driven high See section 32 D S10 E Stop active This LED is on when the E Stop input is driven or floating high N ote that this LED may also indicate the state of the Fault input depending on the setting of jumper JP6 See section 3 4 2 Table 27 Summary of LEDs and functions PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 27 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 7 0 Advanced Configurations 7 1 Configuring a PMDX 122 to Emulate a PMDX 121 To make the PMD X 122 function the same as the older PMD X 121 set the following jumpers JP1 Same as PMD X 121 JP4 Same as PMDX 121 JP2 Same as PMDX 121 JP5 Jumper pins 1 and 2 data bus is output see section 3 1 4 JP3 Same as PMDX 121 JP6 Jumper pins 1 and 2 normal mode
11. always input will cause drive conflict with PC s parallel port until PC runsthe application that makes the parallel port an input This may cause erratic behavior on the daisy chained PM DX 122 until the PC s parallel port is changed to an input port PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 28 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above Board 1 must be powered x via J11 or the PWR Alt In erminal on J8 See note cR E Board 1 m m signal only LO Ji 2 a piae fault pwn E Stop J9 ae Q 2 n W olo lar i Y oQOO GND normal lal JP4 Jpsiout p gt lg always O pin17out DIR Pl pin 2 9 enable pint oe n H5 pint4 Q 9 ev AUX 45V AUX OUT Q c OUT E Stop switch Q uni J8 normally closed Q imis x 7 pin or jumper wire JP1 JP3 a not EStop fault Mic Q pin13 B Fl Outputs Enabled O Bil Pin 2 9COM RLM CP OK amp not EStop fault RLY O pins a GND COM O N O ND pin2 pin COM pin4 pins COM pin pin7 COM pin8 ping COM J7 meme a OO ooo poo ooo stepper drivers N E Stop ns Board 2 J11 GND signal only RL J1 2 d Ol es E Stop is a P if O 2 general purpose digital input 5v AUX 45V AUX OUT Q OUT J8 pin11
12. is configured to any other setting the E Stop input does not affect the control outputs e And optionally when the charge pump circuit is OK and jumper JP3 is configured in CP OK and not EStop Fault mode If jumper JP3 is configured to not EStop Fault then the charge pump is ignored and has no effect on the control outputs Setting Label Description S Control outputs are enabled and the O K signal is asserted when the Fault signal is NOT asserted and optionally when the E Stop signal is NOT asserted Estop fautt depends on jumper JP6 see section 3 4 2 The charge pump circuit is ignored CP OK Control outputs are enabled and the O K signal is asserted when the charge amp not pump circuit is OK and Fault signal is NOT asserted and optionally when the EStop fault E Stop signal is NOT asserted depends on jumper JP6 see section 3 4 2 Table 5 Outputs Enabled Jumper Settings JP3 3 2 2 General Purpose Outputs and LEDs Three ofthe control signals are available as general purpose outputs pins 14 16 and 17 note that pin 17 is a special case with additional functionality see section 3 2 3 The Control O utput LEDs are located next to connector J8 just above each of the pin number labels pin 14 pin 16 and pin 17 Each LED is on when the corresponding output signal is driven high Each control output has a 10K ohm pull down resistor This provides a logic low level whenever the co
13. s outputs and signal the fault to the PC via pin 10 NOTE This configuration should also be used for stepper drivers that have logic level step and direction inputs also called TTL or CMOS inputs The Fault input may or may not be used depending on the features of the stepper drivers J10 JP6 E Stop B signal only Lo J6 fault E Stop E Stop switch normally closed 5 R JP3 not Stofan j i Pl Outputs Enable or jumper wire TR pin2 9 COM I M cp ok amp not EStop fault LI GND pin2 pin3 COM pin4 pins COM pin6 pin COM NOMWINCO NOWINOO PMDX 150 PMDX 150 PMDX 150 PMDX 150 Figure 2 Configuration w Mach3 charge pump and PMDX 150 stepper drivers 2 3 Example with Logic Level Stepper Drivers Stepper drivers with logic level inputs also called TTL or CMOS inputs connect to the PMD X 122 in the same manner as the PMDX 150 See section 2 2 Example with M ach3 Charge Pump and PM DX 150 Stepper D rivers 2 4 Example Limit Switch Wiring Mechanical switches in either normally open or normally closed configurations or optical interrupter switches can be used to provide input signals to the PMDX 122 These switches can act as limit switches home indicators or other status information Since the PMDX 122 provides pull up resistors on the status inputs see section 3 3 mechanical switches can be wired directly to the signal pins on J5 a
14. the load that is connected to the PMDX 122 data outputs D ata Inputs Min input high 2 0V see note 3 Max input low 0 8V see note 3 external source must sink at least 3mA per input Max data rate 1 0 MHz Note 3 Referenced to the COM term when JP1 is set to GND and JP5 is set for input Control O utputs Min output high 3 7V referenced to the Gnd terminal sourcing up to 6 mA per output Max output low 0 4V referenced to the Gnd terminal sinking up to 6 mA per output Relay Contact Ratings 10 amperes at 24 VDC 10 amperes at 120 VAC 10 amperes at 240 VAC Charge Pump Min Frequency 100 Hz minimum square wave on pin 17 Environmental Temperature 0 to 455 C Relative H umidity 20 to 80 relative humidity non condensing PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 31 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above Appendix A Warrant y Statement Practical Micro D esign 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 shipped 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
15. to the common terminals See section 3 1 2 for more information Table 21 Summary of Pin 2 9 Common Jumper Settings JP1 Setting Label Description The data bus ia are always enabled i e ignore the E Stop Fault and charge 2t03 OK D ata bus buffers are enabled as long as the O utputs Enabled LED is on Note that this setting uses the O K signal from jumper JP3 Table 22 Pin 2 9 Enable Jumper Settings JP2 Setting Label Description OK signal asserted when Control outputs are enabled and the O K signal is asserted when the Fault not signal is NOT asserted and optionally when the E Stop signal is NOT asserted EStop fault depends on jumper JP6 see section 3 4 2 The charge pump circuit is ignored See section 3 2 1 Control outputs are enabled and the O K signal is asserted when the charge pump circuit is OK and Fault signal is NOT asserted and optionally when the E Stop signal is NOT asserted depends on jumper JP6 see section 3 4 2 See section 3 2 1 CP OK amp not EStop fault Table 23 Outputs Enabled Jumper Settings JP3 Setting Label Description 0 Pin 17 from the PC parallel port drives the pin 17 control output on J8 as well lto2 normal as the charge pump circuitry and possibly the data bus direction control depending on the setting of jumper JP5 see section 3 1 4 Pin 17 from the PC parallel port drive
16. 2013 Practical Micro Design Inc Page 21 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 4 6 PCParallel Port Connectors J10 amp J9 The PMDX 122 provides a 25 pin D connector J10 for connections to a PC s parallel port This allows the use of a standard 25 pin male to male PC printer cable ex PMDX DB25MtoM The board also provides a 26 pin ribbon cable header J9 This header allows the use of a ribbon cable to 25 pin D connector adapter cable This adapter cable could be used to go from the to PMDX 122 to the cabinet wall and then use a standard 25 pin male to male printer cable from the cabinet to the PC Pin siari Direction J10 relative PMDX 122 note 2 E 3 to the PC Signal Comment Relay rs w logic high at the PC pin see Data bus D ata bus signals are buffered and then connected 6 11 utin output input to the PMDX 122 s data bus connectors see 9 p p section 4 1 8 15 ouf 9 1 ouin Driven high when E Stop or optionally Fault n f 21 jin Jgsauinpt PT 12 23 in gtausInut 13 25 in gtausInpt o 14 2 ow ConroOupt 15 4 in gSttusipu o MM Eua Pen a el Can act as charge pump or data bus direction a Table 18 PC Parallel Port Connectors J10 and J9 NOTE 1 J10 is the 25 pin D connector on the PMD X 122 and these pin num
17. 32 PMDX 122 Manual 112 doc 02005 2013 Practical Micro Design Inc Page 2 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 1 0 Overview This document describes the configuration and operation of the PMD X 122 Revision D Bi Directional Break O ut Board The PMDX 122 provides an interface between a PC and a multi axis stepper motor system or other user equipment This document pertains to the following versions of the PMD X 122 Circuit Board Revision PCB 450D marked on the bottom of the board Serial N umber Range 30100 and above 1 4 Important Safety Information The PMDX 122 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 Design 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 122 is not guaranteed to be fail safe The system into which the PMD X 122 is installed should provide fail safe protection and emergency stop capability The PMDX 122 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 modest ventilation but prevents
18. 320 G 320X G340 and Geckodrive Mach3 ArtSoft Software Inc http www machsupport com PMDX 121 PMDX 122 PMDX 150 PMDX Practical Micro Design Inc http www pmdx com PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 3 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 1 4 Features The PMD X 122 has the following features PC Parallel Port Power Supply Input e Buffers signals to from the PC parallel port e 7to 12 VDC or9 VAC input via 2 1mm e Allows use of all 8 data bits 4 control coaxial jack outputs and 5 status inputs e Or alternate 5V DC via USB connector e 25 pin D connector uses standard PC e Oralternate 7 to 12 VDC or 9 VAC printer cable D B25 male to male input via J8 screw terminal connector e All output signals go low when PC is e Or alternate Regulated 5V DC 5 via disconnected J5 or J8 screw terminal connectors Status Inputs Data Bus Step D irection signals e 5 each status inputs w pull up resistors e 4axes of step and direction or 8 general e Status signals are filtered and buffered purpose signals e LED indicators for each input e Data bus signals are buffered Relay Contact O utputs e Supports signals up to 1 MHz e Isolated relay with N O and N C terminals e Bi directional data bus outputs or inputs e LED indicator for relay state e Can supply 5V to motor dr
19. MDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 19 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above Description Eum e eet Mu TU Gr GGTUEPC Gad pte GU Gear Pin 6 Buffered signal from pin 6 of the PC parallel port s 25 pin D connector parallel port signal name D 4 GEHT Ud Buffered signal from pin 7 of the PC parallel port s 25 pin D connector parallel port signal name D 5 EE NEN Common voltage reference same for all four connectors see section 3 1 2 for reference source Table 12 Data Bus Connector Pin Out J3 Pin Number Label Description Buffered signal from pin 8 of the PC parallel port s 25 pin D connector 1 Pin 8 uper parallel port signal name D 6 Buffered signal from pin 9 of the PC parallel port s 25 pin D connector 2 Pin 9 upy n parallel port signal name D 7 3 COM Common voltage reference same for all four connectors see section 3 1 2 for reference source Table 13 Data Bus Connector Pin Out J4 4 2 Status Input Connector J5 Connector J5 provides access to four of the five status input signals The fifth status input on the PC parallel port is connected to the Fault and E Stop circuitry See section 3 4 2 E Stop Input for more information on this signal Pin Number Label Description 1 5V Auxiliary 5V output for external sen
20. PMDX 122 Revision D Bi Directional Break O ut Board User s Manual ww PMUX com en et PMDX 122 rev D Document Revision 1 12 Date 20 March 2013 PCB Revision PCB 450D Serial N umbers 30100 and above 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 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 1 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above Table of Contents LO L0 7 3 11 Important Safety Information sse ttn tnnt tentis tenti ttti 3 12 Miarranty SUMMALY 2e cri endet dp ae npe none n HER p OR Fa e le E dt 3 L3 Trademarks eb om eedem aequa Dale dn ee aa ne eiim ae 3 DEI A A A E A T 4 15 Differences Between the PMD X 122 and the PMDX 121 sss 4 1 6 Updates to this Manual cn rece rct nein enean n nd nre td icto 4 2 0 QUICK Setup Guide aon anai eene raan ara aea paaa aaa A Aaaa aE au E Naadan kda aada aaa uis 5 21 Example with Mach3 Charge Pump and Gecko Drivers 5 2 2 Example with Mach3 Charge Pump and PMD X 150 Stepper Drivers 6 2 3 Example with Logic Level Stepper Drivers ssi 7 24 Example Limit Switch W iring ssssssseeenennntte tnter tnnt treten ttes 7 3 0 Functional Description and Block Diagrams 1 creen nee seee e
21. a bus direction control see section 3 1 4 The pin 17 control output on J8 is driven high or floats low based on the state of the E Stop and 2to3 OK Fault inputs the charge pump circuit and jumpers JP3 and JP6 See sections 3 4 2 3 4 1 and 3 5 for more information This setting allows the charge pump circuit to disable external drivers via opto isolated relays and also allows daisy chaining the fault E Stop charge pump status to a second PMD X 122 see section 7 2 for an example of daisy chaining boards Table 6 Pin 17 Output Source Jumper Settings JP4 3 2 4 Relay Control and LED pin 1 The pin 1 control signal is dedicated to the on board relay The pin 1 LED is located next to the relay contacts connector and indicates the state of the relay The LED is on when the relay is energized connecting the N O terminal with the RLY CO M terminal The LED is off when the relay is de energized connecting the N C terminal with the RLY CO M terminal A logic high on the pin 1 input from the PC energizes the relay Table 16 on page 21 shows the pin out for the relay connector J7 NOTE Dueto logic inside the PC the voltage on pin 1 is inverted This means that writing a 1 to the bit in the control register results in a logic low at the 25 pin D connector In order to energize the relay a 0 must be written to the parallel port control register Please refer to technical documentation on the PC pa
22. al N umbers 30100 and above 3 When the data bus direction is set to input i e to the PC the pull up resistors provide a default logic high input voltage to the PMD X 122 s data bus buffer when there is no signal source driving that data signal from the connectors Note that the voltage present on J1 through J4 when the buffer is tri stated is approximately 3 2V This is due to the voltage drop across the protection diode and the LED 3 1 2 Data Bus Common The PMDX 122 provides a common reference signal on the four data bus connectors J1 J2 J3 and J4 This common signal is the same for all four connectors and is jumper selectable between a nominal 5V or ground Jumper JP1 labeled pin 2 9 COM on the circuit board determines this voltage reference as follows Setting Label Description Supplies an nominal 5V to the common terminals on J1 J2 J3 and J4 This configuration is commonly used when the motor drivers have optically isolated 45V inputs that expect a voltage source on their common terminal such as some of the Geckodrive modules In this case the PMDX 122 supplies the 5V power to the opto couplers See the note and warning below Connects the PMD X 122 s ground to the common terminals This setting would typically be used with motor drivers that have optically isolated inputs that expect a GND ground reference on their common terminal such as the PMDX 150 It can also
23. als when they are disabled See section 3 2 1 for information on configuring jumper JP3 Jumper JP2 is labeled pin 2 9 enable on the circuit board and can be configured as follows PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 10 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above Setting Label Description The data bus MS are always enabled i e ignore the E Stop Fault and charge D ata bus buffers are enabled as long as the O utputs Enabled LED is on Note 2 to 3 OK that this setting uses the O K signal from jumper JP3 see section 3 2 1 Control Outputs Enabled Jumper and LED for more information Table 3 Pin 2 9 Enable Jumper Settings JP2 3 1 4 Data Bus Buffer Direction Jumper JP5 determines the direction of the PMDX 122 s data bus buffer The data bus is configured as input or output for the entire data bus The direction of individual bits cannot be controlled Setting Label Description 00 1to 2 The data buffers are configured as output buffers from the PC out through the PMDX 122 The data buffer direction is dynamically controlled by pin 17 from the PC s parallel port as follows Logic High Data buffers are output from the PC 2 to 3 Logic Low Data buffers are input to the PC Note that pin 17 also drives the charge pump func
24. bers correspond to the PC parallel port pin numbers NOTE 2 J9 is the 26 pin ribbon cable header on the PMD X 122 PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 22 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above The following web sites provide information regarding the PC s parallel port including pin outs signal names and useful data for software control of the parallel port e IBM PC Parallel Port FAQ and tutorial http www pmdx co m Resources parallel port html and http et nmsu edu etti fall96 co mputer printer printer html e General information and lots of links http www lvr com parport htm e If the previous links do not work go to http www pmdx com our main web page click on the handy CNC information link and then look for the links to parallel port information pages N ote that these web links were accurate as of the printing date of this manual W hile we expect that these non PMD X sites will remain available at these addresses it is possible that they will move or disappear 4 7 Power Supply Connector J11 Connector J11 is used to provide 7 to 12 VDC or 6 to 9 VAC power to the PMDX 122 This connector is a standard 2 1mm diameter coaxial power connector that is compatible with many wall mounted power packs WARNING When using J11 make sure that no power source is connected t
25. ccept either 5V or GND And the G203V requires GND on its COMMON terminal Verify the required COMMON connection on your motor drivers and set jumper JP1 accordingly This configuration takes advantage of Mach3 s charge pump facility so that the PMD X 122 disables all of its outputs if the PC stops behaving properly i e servicing the charge pump Mach3 must be set to provide the step and direction signals to the data port pins that match your wiring configuration W e recommend the connections as shown in Figure 1 and listed in Table 1 Mach3 must also be set to run the charge pump signal on pin 17 If you do not wish to use the charge pump feature change jumper JP3 to the not EStop Fault position The significant jumpers for this configuration are JP1 JP2 JP3 and JP5 The other jumpers JP4 and JP6 may be changed to suit your application As configured in Figure 1 the Fault input defaults to no fault and may be left unconnected if not used To activate the Fault input connect it to ground not shown PC Parallel Port Pin Function PY axis Direction Cd Z axis Direction BC A axis Direction Pp A axis Step Table 1 Mach3 Step and Direction Configuration The pin mapping shown above used to be the default setting in Mach3 But newer versions of Mach3 changed its defaults to used even pin numbers for step signals and odd numbers for direction You may use either configuration with the PMD X 122
26. consequential special or otherwise and whether such damages are incurred by the person to whom this warranty extends or a third party PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 32 of 32 20 March 2013 All Rights Reserved
27. d hubs do not have an external power supply PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 23 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 5 0 Summary of Jumper Configurations The PMDX 122 contains six 3 pin jumpers that determine various aspects of its functionality Each jumper has silk screen labels that describe the function of the jumper and each possible setting Each jumper can have a shorting block installed either between pins 1 and 2 or between pins 2 and 3 Some jumpers may also be configured with no shorting block installed Jumper Description Pin 2 9 Data Bus Common Jumper Pin 2 9 Data Bus Enable Jumper Pin 17 O utput Source Jumper Pin 2 9 Data Bus Direction Jumper E Stop Mode Jumper Table 20 Summary of PMDX 122 Jumpers JP6 JP4 JP5 JP2 1 Ge NS me EE cim e mW 51 a z JP I JP3 Figure 10 Jumper Locations PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 24 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above Setting Label Description Bos e Supplies an nominal 5V to the common terminals on J1 J2 J3 and J4 0 t See the note and warning in section 3 1 2 2t03 GND Connects the PMD X 122 s ground
28. eans that the external emergency stop circuit must be capable of sinking 2 7 mA of current when the switch contacts are closed In this configuration the E Stop and Fault inputs are combined logic O R to drive status signal to pin 10 the PC s parallel port and to enable or disable the data bus and control output buffers NOTE W ith jumper JP6 set to the normal setting pins 1 2 the E Stop signal must be grounded or driven low in order for the data bus and control output buffers to be enabled and for the status signal to pin 10 of the PC parallel port to go low W hen either or both the E Stop active high or Fault active low inputs are asserted the following actions take place e Pin 100n the PC parallel port reads as a logic 1 e TheLED labeled E Stop active reference designator D S10 near J6 is on e TheLED labeled O utputs Enabled when lit reference designator D S1 near the center of the board is off e Thecontrol outputs are tri stated with a weak 10K ohm pull down e The relay is de energized e The data bus outputs may be tri stated with a 2 2K ohm pull up depending on the setting of jumpers JP2 see section 3 1 3 and JP5 see section 3 1 4 3 4 2 2 E Stop Input as General Purpose Input W hen jumper JP6 set to signal only or open the E Stop input acts as a general purpose input that drives pin 10 on the PC parallel port without affecting the data bus and control outputs on the
29. ected to J11 the coax power input connector J5 status inputs J8 control outputs or the USB connector NOTE Dueto logic inside the PC some control outputs are inverted This means that that writing a 1 to a bit in the control register may result in a logic low at the 25 pin D connector Please refer to technical documentation on the PC parallel port or your control software for more information 3 2 1 Control Outputs Enabled Jumper and LED Jumper JP3 is labeled O utputs Enabled and is located just below and to the left of the serial number block It selects the source for the OK signal which is used to enable and disable the control outputs as well as a signal source the OK signal used by jumper JP2 to determine when the data bus outputs are enabled LED DS1 labeled O utputs enabled when lit indicates when the control outputs are enabled The LED is located just above the serial number block The LED is on and the control outputs are enabled under the following circumstances PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 12 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above e TheFault input is driven or allowed to float high inactive see section 3 4 1 e And optionally if the E Stop input is driven low and jumper JP6 is configured in normal mode see section 3 4 2 If jumper JP6
30. ei nnen nen nananana mnnn 8 SM Data HERE ai Em 8 311 Data BUS Signals sci teet ee i ole e le dod erre en erdt 9 3 1 2 D ata Bus Commons iuis eoriec non tcr rbd a ha ferae debant ta or i 10 3 1 3 D ata Bus Buffer Enable iie o ten o te nO a 10 3 1 4 Data Bus Buffer D irection e eee a e eats 11 32 Control O Utp te eee ee viewed ee nee ode ane gat deed eras 11 3 2 1 Control Outputs Enabled Jumper and LED sssssseeetenttn ttes 12 3 2 2 General Purpose O utputs and LED s sse tentent tnnt ttti 13 3 2 3 Pinel PSO UEDUES m omis dat em ced a tenga Dodo fe Oh wea Boo b attain on pera doa d 13 324 Relay Control and LED pin 1 wc cssssssssssssssssessscsssssnsssnssssssessusssesssessuessusssussnsssussseesessnesseessess 14 3 3 Status INPUTS an in taedio ota t tela td ofa afl to nd cen 14 3 4 Fault arid E Stop Inputs ere eterne enr papeterie 15 341 i e 17 3 42 asc rd aaa aaa M 17 3 4 2 1 E Stop Input as E Stop Signal reete bn tee ae ei iras 17 3 4 2 2 E Stop Input as General Purpose Input sssseeeente tentent tnnt nnns 17 342 3 E StOD LED D SIQ esie tre ny whale avin cage ace epa tnt ch eps 18 35 Charge Pump watchdog teet eed teh ite noni eet ip aa 18 36 Power Supply Connections ssssesseeee neenon tetti ttt tti ttt tenista 18 4 0 Summary of Connector Pinouts Leeeeeiesernee nen aa anna an a auram aa nunnunum a ama aua nnmnnn nanna 19 41
31. ge pump is not OK Depending on the configuration of jumpers JP3 and JP2 the charge pump may cause the PMD X 122 to disable the output buffers when it is not OK Jumper JP3 determines whether the output from the charge pump is used to enable and disable the control output buffers see section 3 2 1 Jumper JP2 determines whether the step and direction outputs are ever disabled see section 3 1 3 See also the block diagrams in section 3 4 This charge pump circuit is designed to work with the Mach3 CNC software However any software that can toggle pin 17 on the PC parallel port can make use of this feature If your software does not support this feature configure the jumpers to disable the charge pump circuit NOTE The state of the charge pump signal is not reflected in the E Stop and Fault status that is output on pin 10 to the PC parallel port This is to prevent lock up ofthe software Mach3 CNC software requires that the Emergency Stop signal pin 10 not be asserted before it will start generating the charge pump signal 3 6 Power Supply Connections The PMDX 122 may be powered from several different power sources WARNING Only one of these power sources can be used at a time Connecting a power source to more than one of these power inputs may damage the PM DX 122 Unregulated 9 VAC or 7 to 12 VDC J11 a 2 1mm coaxial jack see section 4 7 AC or DC or J8 screw terminal connector pins 5 and 6 see section 4 5
32. hat its default state is no fault The E Stop and Fault inputs combine to drive pin 10 into the PC parallel port and to optionally disable buffers on the PMDX 122 The E Stop input is a general purpose input and directly drives pin 10 on the PC parallel port without affecting the data bus and control outputs on the 2to3 signal only PMDX 122 board The Fault input has a 10K pull down resistor and a 100K pull up resistor so that its default state is fault This jumper setting is used for daisy chaining two PMD X 122 boards see 7 2 The E Stop input is a general purpose input and directly drives pin 10 into the PC Open parallel port without affecting the data bus and control outputs on the PMD X 122 board The Fault input has a 100K pull up resistor so that its default state is no fault i e the Fault input can be left unconnected if not used Table26 E Stop Mode Jumper Settings JP6 PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 26 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 6 0 Summary of LEDs The PMDX 122 provides LEDs to show the state of the data status and control signals These LEDs are described in the following table Ecc Designator LED Name pin 2 to pin 9 8 each LEDs one for each data bus signal Each LED is on data bus LED s when the corresponding data signal is low
33. hd PC parallel port Ack pin 10 signal AND OK to control buffer enable and OE Ch 5 JP3 data bus enable jumper JP3 arge Pin 17 2 343 9 from PC parallel port Pump Figure 8 Fault E Stop and Charge Pump when JP6 set to pins 2 3 DS10 Ma EStop Active Fault pin 10 E Stop EStop GND to status input circuit and then to the PC parallel port Ack pin 10 signal Charge 2 to control buffer enable and Pin 17 gt data bus enable jumper JP3 from PC parallel port Pump Figure 9 Fault E Stop and Charge Pump when JP6 set to open PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 16 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 3 4 1 Fault Input The Fault input provides an interface for external fault detection circuits such as the fault signals from the PMD X 150 stepper motor drivers This signal is active low meaning that a logic low indicates a fault condition and a logic high means all is OK Figure 7 Figure 8 and Figure 9 on page 16 shows block diagrams of the Fault input circuitry for the various configurations of jumper JP6 The Fault input can be connected to an external wired or configuration of open collector status signals or mechanical switches to ground switch closed means fault All of the exter
34. intrusion by operator s hands and foreign objects 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 122 may be integrated can cause injury Precautions should be taken to assure that operators are trained in their proper operation and safety procedures and that they are protected from moving parts that may 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 PMD X 122 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 PMDX web site http www pmdx com for return instructions The purchaser must pay shipping to return the unit to PMD X 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 1 3 Trademarks The following product names used in this manual are the trademark tradename or registered mark of the respective companies Product Names Company G201 G201X G202 G203V G210 G eckodrive Inc http ww w geckodrive com G 212 G
35. iver opto General Purpose O utputs couplers or a ground reference for logic e 3 each general purpose digital outputs inputs e Outputs are buffered Sp cial Featir s e Wire clamp screw terminals for all connections to data bus signals relay and control outputs and status inputs e Auxiliary 5 volt supply output e LED indicator for each output 1 5 Differences Between the PMDX 122 and the PMDX 121 The PMDX 122 is a replacement and upgrade to the PMDX 121 board For directions on configuring the PMDX 122 to function like a PMD X 121 see section 7 1 The differences between the PMDX 121 and PMDX 122 are e ThePMDX 122 supports bi directional data on J1 J2 J3 and J4 the PC parallel port s data bus The PMDX 121 only supported output from the PC e ThePMDX 122 s data outputs on J1 J2 J3 and J4 always have pull up resistors The PMDX 121 s data outputs could have pull up or pull down resistors depending on the how JP1 was configured The PMDX 122 supports using the E Stop input as a general purpose input without affecting the data and control outputs see section 3 4 2 2 On the PMDX 121 the E Stop input always affected the data and control outputs The PMDX 122 supports daisy chaining from another PMDX 122 or a PMDX 121 with the charge pump on the first board able to disable the data and control outputs on the daisy chained PMD X 122 board see section 7 2 for an example The PDMX 121 did not support this feat
36. k on the bottom ofthe circuit board Connector J1 J2 J3 J4 Data Bus Signals can be step and direction J5 J6 J7 J8 J9 J10 25 pin D connector for PC Parallel Port J11 DC Power via a 2 1mm coax connector USB Connector used for power only Table 9 Summary of PMDX 122 Connectors 4 1 Data Bus Connectors J1 J2 J3 and J4 The data bus connectors are labeled to denote which pin on the PC s parallel port that is associated with each connector pin Pin 2 is data bus bit DO the least significant bit and Pin 9 is data bus bit D 7 the most significant bit Pin Number Label Description 1 Pin2 Buffered signal from pin 2 of the PC parallel port s 25 pin D connector parallel port signal name D 0 Buffered signal from pin 3 of the PC parallel port s 25 pin D connector 2 Pin 3 upy 1 parallel port signal name D 1 3 COM Common voltage reference same for all four connectors see section 3 12 for reference source Table 10 Data Bus Connector Pin Out J1 Pin Number Label Description amp Buffered signal from pin 4 of the PC parallel port s 25 pin D connector 1 Pin 4 upon parallel port signal name D 2 Buffered signal from pin 5 of the PC parallel port s 25 pin D connector parallel port signal name D 3 Common voltage reference same for all four connectors see section 3 1 2 for reference source Table 11 Data Bus Connector Pin Out J2 P
37. l port contains an 8 bit data bus O n older PCs this data bus was output only On newer PCs the data bus is bi directional and can switch from output to input under software control The PMD X 122 buffers the data bus signals between the PC and the PMD X 122 s connectors J1 through J4 The PMD X 122 supports the bi directional data bus where the PMD X 122 s data direction is jumper selectable to output only input only or controlled by pin17 See section 4 1 for more information on the data bus connectors PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 8 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above PC Connector JP1 To pin 9 Equipment in 8 COM i pns J4 pin 8 f 2 2K X OM ED pins 7A ont LIO gg in 6 D pin 7 pin 4 pin 3 COM pin 5 J2 pin 2 LD 45V COM 2 2 Out pin 3 1 2 Out 1JP5 Sina Open In 2 2 3 Auto O 3 Always On pin 17 10 1 JP2 2 Slct In O High Output from PC Low Input to PC OK 13 from EStop Fault Charge Pump Direction Figure 4 Block diagram of Data Bus Circuitry 3 1 1 Data Bus Signals Connectors J1 through J4 contain buffered versions of the PC parallel port data bus signals These connectors are labeled to denote which pin on the PC s parallel port 25 pin D connector is associa
38. nal fault signals should be tied together and connected to the PMD X 122 s Fault input Depending on the configuration of jumper JP6 the Fault input has either a 100K ohm pull up resistor or a 10K ohm pull down resistor See Table 7 on page 15 W hen jumper JP6 is set to the normal setting the E Stop and Fault inputs are combined logic O R to drive pin 10 to the PC s parallel port Refer to section 3 4 2 1 E Stop Input as E Stop Signal for a list of actions that take place when the Fault input is driven low 3 4 2 E Stop Input The E Stop input has different functionality depending on the setting of jumper JP6 as described in the following sections Figure 7 Figure 8 and Figure 9 on page 16 shows block diagrams of the E Stop input circuitry for the various configurations of jumper JP6 3 4 2 1 E Stop Input as E Stop Signal W hen jumper JP6 set to the normal setting the E Stop input provides an interface for external emergency stop circuits see Figure 7 This signal is active high meaning that a logic high tells the System to stop and alogic low means all is OK The E Stop input is designed to be connected to an external normally closed switch or group of switches all wired in series The external switch es should be wired between the E Stop pin and ground such that the switch contacts open to signal an emergency stop condition The PMDX 122 provides a 2 2K ohm pull up resistor on the E Stop input This m
39. nd ground Optical interrupter switches require a current limit resistor for the emitter LED Note that the examples below show the signals connected to pin 11 The input signals may be connected to any of the signal pins on J5 The input signals may also be connected to the E Stop input on J6 when the E Stop input is configured as a general purpose input see section 3 4 2 2 Normally Closed Switches PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 7 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above The left hand drawing in Figure 3 shows an example of normally closed mechanical switches The switches are wired in series so that the normal case is ground logic low going into pin 11 of the PC s parallel port W hen one or more of the switches open the pull up resistor on the PMD X 122 provides a logic high into pin 11 on the PC s parallel port Any number of normally closed switches may be connected in series to a single input terminal on the PMD X 122 Three normally closed Three normally open switches in series switches in parallel Opicakiniemupter Fairchild H21A1 or equivalent Figure 3 Example Switch and Optical Interruptor Configurations Normally O pen Switches The center drawing in Figure 3 shows an example of normally open mechanical switches The switches are wired in parallel
40. 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 Design Inc in respect of any defective product will be limited to the repair or replacement of such product Practical Micro D esign 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 Design 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 of revenue or profit resulting from the use of the product or d as a result of any event circumstance action or abuse beyond the control of Practical Micro Design Inc whether such damages be direct indirect
41. ntrol output buffer is disabled N ote that this is a fairly weak pull down and can be overridden externally with a stronger pull up resistor if required 3 2 3 Pin 17 Output In addition to being available as a general purpose output the pin 17 signal serves several additional and optional functions e Drives the charge pump circuit see section 3 5 W hile pin 17 always drives the charge pump the output of the charge pump may be ignored depending on the setting of jumper JP3 see section 3 2 1 e Optionally determines the direction of the data bus depends on jumper JP5 see section 3 1 4 e Optionally acts as a daisy chain output of the fault E Stop charge pump status depending on the configuration of jumper JP4 see the table below Jumper JP4 is labeled pin 17 out and selects the source for the pin 17 signal on connector J8 PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 13 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above Setting Label Description Pin 17 from the PC parallel port drives the pin 17 control output on J8 as well lto2 normal as the charge pump circuitry and possibly the data bus direction control depending on the setting of jumper JP5 see section 3 1 4 Pin 17 from the PC parallel port drives only the charge pump circuitry and possibly the dat
42. o J8 pin 5 Aux Power In J5 pin 1 status inputs 5V or J8 pin 1 control outputs 45V See sections 3 2 and 3 6 for more information Also the USB connector should not be connected Pin Description Positive voltage or AC voltage Table 19 Power Supply Connector Pin Out J11 4 8 USB Connector J12 The USB connector can be used as an alternate power source for the PMDX 122 The PMDX 122 draws a maximum of 200 mA from this connector See section 9 0 Electrical and Environmental Specifications for information regarding U SB hub requirements When using the USB asa power source do not connect any power source to J11 or to J8 pin 5 The PMD X 122 has series diode protection on the USB power supply lines so no damage to the USB host or the PMDX 122 should occur if another power source is connected along with the USB It is better to avoid this situation in the first place however NOTE The PMDX 122 is not a USB device It does not send or receive data or control information to the PC There are no device drivers that need to be installed on the PC The PMDX 122 uses the USB connector solely as an alternate power source WARNING Connect the PM DX 122 to self powered USB hubs or directly to the PC s USB connectors Do not attempt to power a PMDX 122 from a bus powered USB hub as they may not provide sufficient power Self powered hubs us an external power supply typically a wall wart style Bus powere
43. rallel port or your control software for more information Mach3 and other CN C programs automatically compensate for this 3 3 Status Inputs Four of the status signals are available as general purpose inputs pins 11 12 13 and 15 The fifth status input on the PC parallel port pin 10 is connected to the Fault and E Stop circuitry See sections 3 4 2 E Stop Input and 3 4 1 Fault Input for more information on this signal Figure 6 on page 15 shows a block diagram of the status input circuitry The Status Input LEDs are located next to connector J5 just above each of the pin number labels pin 11 pin 12 pin 13 and pin 15 Each LED is on when the corresponding input signal is driven low Each status input has a 10K ohm pull up resistor and an RC low pass filter to remove high frequency noise from the inputs The pull up resistor provides a logic high input level whenever the input terminal is not driven by an external source The inputs may be driven by open collector drivers or mechanical switches to ground or to be left unconnected when not used Note that this is a fairly weak pull up and can be overridden externally with a stronger pull down resistor if required NOTE Dueto logic inside the PC some status inputs are inverted This means that a logic high output from the PMD X 122 to the PC s parallel port is read as a 0 in the status register Please refer to technical documentation on the PC parallel port or
44. rence on their common terminal Verify they style of opto couplers on your stepper drivers before connecting them to the PM DX 122 This configuration takes advantage of Mach3 s charge pump facility so that the PMD X 122 disables all of its outputs if the PC stops behaving properly i e servicing the charge pump Mach3 must be set to provide the step and direction signals to the data port pins that match your wiring configuration W e recommend the connections as shown in Figure 2 and listed in Table 1 on page 5 Mach3 must also be set to run the charge pump signal on pin 17 If you do not wish to use the charge pump feature change jumper JP3 to the not EStop Fault position The significant jumpers for this configuration are JP1 JP2 JP3 and JP5 The other jumpers JP4 and JP6 may be changed to suit your application As configured in Figure 2 the Fault input defaults to no fault and may be left unconnected if not used To activate the Fault input connect it to ground W hen using PMD X 150 stepper drivers connect their Fault outputs together and connect that to the PMD X 122 s Fault input as shown This allows the fault PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 6 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above output of any PMDX 150 to disable the other PMD X 150 drivers disable the PMD X 122
45. s only the charge pump circuitry The pin 17 control output on J8 is driven high or floats low based on the state of the 2t03 OK E Stop and Fault inputs the charge pump circuit and jumpers JP3 and JP6 See sections 3 4 2 3 4 1 and 3 5 for more information This setting allows the charge pump circuit to disable external drivers via opto isolated relays or can be used to daisy chain two PMDX 122 boards see section 7 2 Table 24 Pin 17 Output Source Jumper Settings JP4 PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 25 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above Setting Label Description 1to 2 jut The data buffers are configured as output buffers from the PC out through the PMD X 122 The data buffer direction is dynamically controlled by the pin 17 from the PC s 2 to 3 parallel port See section 3 1 4 Data Bus Buffer Direction for more information See the note and warning in section 3 1 4 O pen jumper The data buffers are configured as input buffers through the PMDX 122 into not the PC See the note and warning in section 3 1 4 installed Table 25 Data Bus Direction Jumper Settings JP5 Setting Label Description The E Stop input is an emergency stop signal The Fault input has a 100K pull up 1to2 jorma resistor so t
46. see section 3 4 NOTE This configuration is not a perfect emulation of the PMDX 121 Refer to section 1 5 Differences Between the PM DX 122 and the PM DX 121 specifically for the difference in data bus output pull up pull down resistors 7 2 Example Daisy Chain PMDX 122 with Encoder Inputs Figure 11 on page 29 shows two PMD X 122 boards daisy chained to each other using two parallel ports on the PC Note that daisy chaining refers only to the charge pump E Stop and Fault functions This configuration allows both boards to respond in the same manner to and any fault condition You must connect the second board to a second parallel port on your PC in order to use the data bus control outputs and status inputs The first board acts as the master and implements the E Stop Fault and charge pump functions and connects to the stepper driver modules The second board is the slave and configures the data bus for input to the PC for use with optical encoder inputs for example The Fault input on the second board is connected to the Pin 17 output on the first board so that both boards disable their outputs on any fault or E Stop condition or charge pump failure NOTE When powering the second PMD X 122 from the first as shown in Figure 11 board 1 must be powered via J11 or the PWR Alt In terminal on J8 Power from a USB hub cannot be daisy chained to the second board WARNING Configuring the data bus on board 2 as
47. so that its default state is fault This jumper setting can be used for daisy chaining two PMD X 122 boards see section 7 2 1to 2 Figure 7 normal 2 to 3 Figure 8 The E Stop input is a general purpose input and directly drives pin 10 into the PC Open parallel port without affecting the data bus and control outputs on the Figure 9 PMD X 122 board The Fault input has a 100K pull up resistor so that its default state is no fault i e the Fault input can be left unconnected if not used Table 7 E Stop Mode Jumper Settings JP6 NOTE When jumper JP6 is set to the normal setting the Fault input must be allowed to float high or be driven high in order for the output buffers to be enabled and for the status signal to pin 10 of the PC parallel port to go low PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 15 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 35V 2 2K DS10 Ma EStop Active Fault pin 10 E Stop gt EStop to status input circuit and then to GND the PC parallel port Ack pin 10 signal AND O to control Cher enable Oo Charge and data bus enable jumper Pump JP3 Pin 17 gt from PC parallel port 2 2K DS10 Ma EStop Active Fault pin 10 E Stop EStop GND to status input circuit and then to t
48. so that the normal case is 5V logic high going into pin 11 of the PC s parallel port due to the pull up resistor on the PMDX 122 W hen one or more ofthe switches close a logic low appears on pin 11 on the PC s parallel port Any number of normally open switches may be paralleled onto a single input terminal on the PMD X 122 Optical Interrupter The right hand drawing in Figure 3 shows an example of an optical interrupter This example uses the 5V from the PMDX 122 to power the emitter LED Choose a resistor value to provide the desired LED current refer to the data sheet for the optical interrupter The output transistor is connected as an open collector output between the PMD X 122 input pin and ground W hen light from the LED strikes the sensor transistor the transistor conducts giving a logic low on pin 11 of the PC s parallel port Then the LED is interrupted the transistor stops conducting and the PMD X 122 s pull up resistor gives alogic high on pin 11 Proximity Sensors The PMDX 122 will operate with N PN style proximity sensors but will not work with PNP style sensors Connect the N PN style sensors as shown for the optical interrupter example above except that you may need to power the sensor from an external power source it they require more the 5V power or they require more then a few 10 s of milli mps worth of current 3 0 Functional Description and Block Diagrams 3 1 Data Bus The PC paralle
49. sor power ee RI OR regulated 5V DC input see section 3 6 4 Pin 13___ Status input buffered to PC parallel portpin13 Status input buffered to PC parallel port pin 15 6 GND X jGroundconnection O Table 14 Status Input Connector Pin Out J5 NOTE Dueto logic inside the PC some status inputs are inverted This means that a logic high output from the PMD X 122 to the PC s parallel port is read as a 0 in the status register Please refer to technical documentation on the PC parallel port or your control software for more information PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 20 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 4 3 Fault and E Stop Connector J6 J6 provides the Fault and E Stop input signals to the PMD X 122 Refer to sections 3 4 2 E Stop Input and 3 4 1 Fault Input for more information on using these signals Pin Number Label Description Fault input the means active low i e ground to signal a fault 2 E Stop Emergency Stop input active high i e open to signal E Stop You must provide a ground via the E Stop switch chain or a direct jumper in order to prevent an E Stop condition which may disable the data bus and control outputs on the PMD X 122 board Table 15 E Stop and Fault Connector Pin O ut J6
50. ted 5V DC 5 input 200 mA input via J5 or J8 see section 3 6 USB Power 5V DC 200 mA optional power source as alternate to the main power Note 1 According to the USB specification a USB hub supplies only 100mA to an un initialized device which is how the PMD X 122 appears to the hub However most self powered USB hubs including those built into PCs provide sufficient current to power the PMD X 122 Note 2 Self powered USB hubs use some sort of external power supply such as a wall wart supply whereas bus powered hubs do not Only connect the PMDX 122 to self powered USB hubs or directly to a PC s USB port Do not attempt to power the PM DX 122 from a bus powered USB hub Do not daisy chain PM DX 122 boards when powered from a USB port Status Inputs Min input high 2 0V referenced to the Gnd terminal Max input low 0 8V referenced to the Gnd terminal Data O utputs Min output high 3 8V sourcing up to 16mA per output see note 2 Max output low 0 8V sinking up to 16mA per output see note 2 Max data rate 1 0 MHz Note 2 The output current specification is valid only when the outputs are enabled Voltages are referenced to the CO M term when JP1 is set to GN D and JP5 is set for output The output high voltage may be lower if the outputs are disabled and the PMD X 122 s pull up resistor is providing the output voltage W hen the outputs are disabled the actual output voltage depends on
51. ted with each terminal Pin 2 is data bus bit DO the least significant bit and Pin 9 is data bus bit D 7 the most significant bit The data bus signals are normally used for step and direction outputs However they can also be used as general purpose output or input signals The data bus signals must be either all outputs or all inputs It is not possible to have some as outputs and some as inputs Each data bus signal has a pull up resistor and an LED that is on when the signal is driven low The signals can be driven low by the PC when the data bus is in output mode or by the external equipment when the data bus is in input mode see section 3 1 4 The pull up resistors serve several purposes 1 When the data bus direction is set to output i e from the PC and the buffer has been disabled via the E Stop input Fault input or a charge pump failure the pull up resistors provide a default logic high voltage level at the connectors see note below regarding the actual voltage present when then outputs are disabled 2 When the data bus direction is set to input i e to the PC the data inputs to the PMDX 122 can be driven by mechanical switches to ground or by encoders or other devices with open collector outputs PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 9 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Seri
52. tion If you are using pin 17 for direction control make sure to disable the charge pump function see section 3 2 1 See the note and warning below O pen jumper The data buffers are configured as input buffers through the PMD X 122 into not the PC See the note and warning below installed Table 4 Data Bus Direction Jumper Settings JP5 WARNING When jumper JP5 is configured so that the data bus direction is either input or pin 17 controlled jumper JP2 should be set to always enabled There are no pull up or pull down resistors on the PC side of the data bus buffers If the data buffers are configured as input to PC and then disabled the PC s parallel port will have floating inputs which could result in erratic readings NOTE n order to use the data lines as inputs to a PC the PC s BIO S must be set so that the parallel port is configured as either bi directional EPP or ECP Please consult your PC s documentation for instructions on how to change your BIO S settings 3 2 Control Outputs The PMDX 122 supports three general purpose control outputs as shown in Table 17 on page 21 The fourth PC parallel port control signal pin 1 is dedicated to the PMD X 122 s on board relay see section 3 2 4 Figure 5 shows a block diagram of the control outputs PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 11 of 32 20 March 2013 All Rights Reserved PMDX 122 User s
53. ure 1 6 Updates to this Manual Check the PMDX 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 122 page follow the links from the main page PMDX 122 Manual 112 doc 2005 2013 Practical Micro Design Inc Page 4 of 32 20 March 2013 All Rights Reserved PMDX 122 User s Manual PCB Revision PC B 450D Document Revision 1 12 Serial N umbers 30100 and above 2 0 Quick Setup Guide See section 3 6 for information on power sources and power connections for the PMDX 122 2 1 Example with Mach3 Charge Pump and Gecko Drivers Figure 1 on page 6 shows a standard configuration using Mach3 software on the PC driving the PMDX 122 The PMDX 122 is in turn connected to opto isolated stepper drivers such as the Geckodrive units that require a voltage source on their common terminal see note below Not all opto isolated stepper drivers require a voltage source on their common terminal Verify they style of opto couplers on your stepper drivers before connecting them to the PM DX 122 The PMD X 150 for example requires a ground on the common terminal see section 2 2 NOTE Some older Geckodrive models require the use of 5V on their common terminal G 201 G202 and G 320 for example while other models provide a jumper to select either 5V or ground as the common reference G210 G212 G 340 for example Newer models G201X and G320X can a
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