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PMDX-126 User`s Manual, Revision 1.1

1. Qo O 0 750 4900 4 250 E 3 660 pr 3 each holes for 6 screw to mount 2 975 SmoothStepper 0 150 4 850 0 440 EE a E NE ER K 0 000 Q QO y 0379 0 150 0 000 Figure 6 PMDX 126 Dimensions and Mounting Holes WARNING The PMDX 126 should be protected from liquids dirt or chips especially metal chips which can cause shorts coming in contact with the board PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 32 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual Document Revision 1 1 PCB Revision PCB 485A Serial N umbers 28289 and above 12 0 Electrical and Environmental Specifications Main Power 115VAC 110 to 125VAC or 230VAC 220 to 240VAC switch selectable 0 150 Amperes maximum External Loads from Primary Power Supply PC 45V Regulated 5V supply referenced to PC ground on connectors J1 J2 J3 J4 J5 and J6 PC 45V is also present on connectors J16 and J17 depending on jumper JP3 see section 4 0 J18 and J19 depending on jumper JP4 see section 4 0 Maximum total current drawn from all PC 5V pins is 350 mA see note 1 below V Raw Unregulated 12V supply on connector J7 Maximum current 300 mA see note 1 below NOTETI Total current supplied to external loads from both PC 5V and V Raw including a SmoothStepper if any on J16 and J17 and a PMDX accessory board if any on J18 and o
2. 10 6 Relay Contact Connectors J9 and J10 See section 7 2 for more information on using these connectors Pin Number Label Description Cd Relay common terminal N ormally O pen relay contact i e open when relay is not energized Table 23 Relay K1 Contact Connector Pin Out J9 Pin Number Label Description N ormally Closed relay contact i e closed when relay is not energized Relycommontermind S Relay common terminal N ormally O pen relay contacts i e open when relay is not energized 4 MOV MOV protection terminal see section 7 2 for more information Table 24 Relay K2 Contact Connector Pin Out J10 PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 27 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 10 7 Secondary Status Input Connector J11 Pin Number Label Description Description Unregulated 12V power supply referenced to the GN D pins on this connector Regulated 5V power supply referenced to the GND terminals on this connector O ptically isolated input for parallel port 2 pin 11 or multiplexed onto port 1 pin 11 4 GND Isolated ground reference 5 TES O ptically isolated input for parallel port 2 pin 12 or multiplexed onto port 1 pin 12 6 GND Isolated ground reference 7 G O ptically isolate
3. NOTE 1 The PC Pin number column lists the pin numbers as they would appear on the PC s 25 pin D connector when using a standard printer cable NOTE 2 J15 is the 25 pin D connector on the PMDX 126 J16 not shown in this table is the 26 pin ribbon cable header on the PMDX 126 The pin out on J16 matches the industry standard for D B 25 signals on a ribbon cable PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 29 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 10 12 Parallel Port 2 Connector J17 The PMDX 126 provides a 26 pin ribbon cable header for the parallel port 2 ise Numbers J17 Ki 1 note 2 PMDX 126 Signal Core i ontrol O utput to connector J5 A Can use the PMDX 108 In or PMD X 108 O ut to access these signals Driven high when E Stop or Fault is active Status Input from J11 E 38 3 Eas nat fem d 3 13 25 StatusInputfromJ11 G fT O 14 2 Control Output to connector J5 B 1 1 O 15 4 StatusinputfromJ11 H fT M ES E a S Control O utput to connector J5 D 2 10 24 Table 29 PC Parallel Port Connectors J17 No connection on the PMD X 126 NOTE 1 The PC Pin number column lists the pin numbers as they would appear on the PC s 25 pin D connector when using a standard p
4. Allows use of both relays and still have pins 1 and 14 available as an additional step direction pair or as general purpose CMO S outputs e Allows use of pins 16 and 17 on connector J6 as general purpose output signals even when parallel port 1 pin 17 is used as the charge pump signal and pin 16 is used for the expanded serial data e Adds an additional 4 output signals e Allows for 9 input signals instead of the usual 5 The additional output signals are labeled A B C and D on connector J5 These are normally associated with the 2nd parallel port but in Expanded I O and Expanded Output modes only they are driven by the PMDX 126 from parallel port 1 The additional input signals are labeled E F G and H on connector J11 These are normally associated with the 2nd parallel port but in Expanded 1 0 M ode and Expanded Input mode they are multiplexed onto parallel port 1 In order to use either of the PMDX 126 s expanded modes with Mach3 you must download and install the PMDX 126 Mach3 plug in To use the expanded modes with EMC you must provide an EMC HAL configuration that supports the expanded modes For other controller software contact PMD X for additional information The sections below summarize the features and functionality available in each PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 12 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document
5. Axis 6 pin 2 cloned pin 3 cloned J5 pin 2 4 J5 pin 3 5 PMDX 133 2 Axis 3 and inverted Table 11 Step and Direction signal mapping in Jumbo Mode PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 18 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above The 6th axis is cloned from axis 1 in hardware on the PMD X 126 board The 6th axis DIR signal is inverted with respect to the axis 1 DIR signal Parallel port pin 16 may be used to control the K1 relay by setting jumper JP1 to multimode and DIP Switch Config 7 closed See section 3 3 for more information on controlling relay K1 The function of parallel port pin 17 depends on the operational mode DIP switches see section 3 1 If set for N ormal Mode then pin 17 is a general purpose output If set for N ormal Mode with Charge Pump or Expanded Input Mode then pin 17 must be configured as the charge pump signal Note Jumbo Mode cannot be used when the board is configured for Expanded I O or Expanded O utput modes 6 0 Input Signals 6 1 General Purpose Inputs The PMDX 126 provides eight 8 optically isolated general purpose input signals four on connector J12 parallel port 1 and four on J11 parallel port 2 In Expanded I O M ode all eight of these signals are available on a single parallel port see section 5 3 Internal
6. MO OS M X M 5 4 1 Test Mode DIP Switch Settings ttes 5 42 PUSH ANd HOId tO UL 5 4 3 Push tosRUN PUSH tO StOD acere te oe meret n o o ote er n Ted ade tara 5 5 P lse Stretch Mode dete dern en n vid d o rec Re erede 55 1 Pulse Stretch Active Low Mode sese nii tentis 552 Pulse Stretch Active High Mode tnnt rnnt itin 5 6 Touch Probe Merged Inputs MOde et rtp e ci pr dad n cse trt died 5 7 Jumbo Mode 5 or 6 axis from single parallel port 6 0 Input Sighals ith dene hene ere inde ERU RH DR RD ata 6 1 General Purpose INpuls sen r io eec m p eed ea ele reus 6 2 E Stop Input 6 3 Fault Input 6 4 Gecko Error Input iuo dcm anita caine om rrr le e Le e rd bea e nrbe kil oe 3 0 Quitput Signals estie teer tette ined ed eben ed E iaa n pest e cre Pod 71 General Purpose O UtpUEs sssia tec hoan bo tea d oco Pet dac D Penis 7 2 Relay C ontact O utputs 73 Restart O Utput e eere ete mee era dete e o e Rr RIED ce PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above Table of Contents continued 80 Charge PUmp s ooi e ote moet pado beoe tod e aediles 9 0 LED 9 1 Status LED Error CG OOS cce ciis ern RR d eR eret HO X e FR XR D CH ur d reet RR dien 92 External EED Connector 7 etienne tbe rettet bb treten ek ree eb rere ore
7. The switches are wired in series so that the normal case is ground logic low going into pin 12 of the PC s parallel port W hen one or more of the switches open a pull up circuit in the PMDX 126 provides a logic high into pin 12 on the PC s parallel port Any number of normally closed mechanical switches may be connected in series to a single input terminal on the PMD X 126 Normally O pen Switches The right hand drawing in Figure 2 shows an example of normally open mechanical switches The switches are wired in parallel so that the normal case is that the pull up circuit in the PMDX 126 provides a logic high going into pin 12 of the PC s parallel port W hen one or more ofthe switches close alogic low appears on pin 12 on the PC s parallel port Any number of normally open switches may be paralleled onto a single input terminal on the PMD X 126 Three normally closed Three normally open Switches in series switches in parallel input is active high input is active low nn D n D GND e GND T 2 42 GND D GND D d d b D 13 D GND D GND D s D 15 D GND o GND gt 5V 5V 12U D 12U D J12 or J11 J12 or J11 Figure 2 Sample Mechanical Switch Input Connections NPN Style Sensors Optical Interrupter or Hall Effect Sensor Figure 3 shows an example of the PMD X 170 slotted optical sensor This example uses the 5V from the PMDX 126 to power the sensor The sensor s output signal is c
8. as normally closed switches which open when the touch probe touches something The touch probe should therefore be connected to J11 pin 9 labeled H Configure your motion control software Mach3 EMC etc to use pin 15 as an active high input signal in Mach3 that means a red X in the Low Active column 5 7 Jumbo Mode 5 or 6 axis from single parallel port NOTE This section provides an overview of Jumbo Mode For more detailed information see the PMDX 126 Jumbo M ode application note on our web site http www pmdx com AppN otes NOTE Jumbo Mode is only available on PMD X 126 boards with revision A3 and higher Jumbo Mode allows for a 5 or 6 axis system to be run from a single parallel port with the step and direction signals routed for use with two daisy chained PMD X 133 Gecko Motherboards connected to J19 or with hand wired connections from screw terminal connectors J1 through J5 It also allows PC control of the large on board relay K1 You may optionally also enable the touch Probe Merged Inputs functionality see section 5 6 Parallel Port Pin Discrete wiring PMDX 133 DIR signal STEP signal DIR signal STEP signal Connection JA pin 2 2 M4 pin 3 3 PMDX 133 1 Axis 1 J3 pin 2 4 J3 pin 3 5 PMDX 133 1 Axis 2 J2 pin 2 4 2 pin 3 5 PMDX 133 1 Axis 3 Jl pin 2 2 I pin 3 3 PMDX 133 2 Axis 1 J5 pin 2 4 J5 pin 3 5 PMDX 133 2 Axis 2
9. but they are ignored by the PMDX 126 except for the E Stop Fault and Gecko Error signals which will disable the test mode step and direction outputs as long as they are asserted The PMDX 126 asserts the E Stop signal to the PC as long as it is in Test mode This tells the PC that it cannot or should not attempt to control any signals through the PMD X 126 Test mode only controls the currently selected step and direction pins If your machine requires the on board relays or other output signals to be functional while a motor is moving then you will need to temporarily re wire your machine to manually control those functions For example if you use relay K2 to control power to your stepper motor drivers you will need to re wire power to them so that they will be powered on when the PMDX 126 is in test mode WARNING When using test mode to generate step and direction signals on pins 1 and 14 make sure to set jumpers JP1 and JP2 to disable relays K1 and K2 The Steps LED will flicker whenever a step pulse is generated by the PMDX 126 in test mode The output signal LED next to connectors J1 through J6 for the step signal may glow dimly when steps are generated depending on the step speed and polarity 5 4 1 Test Mode DIP Switch Settings The DIP switches provide for two different step and direction pin outs while in test mode PMDX and Alternate These two pin outs are shown in the table below Note that th
10. circuitry on the PMDX 126 pulls these inputs high when there is nothing connected to the input terminal or when a switch circuit is open The PMDX 126 s inputs can be driven by any of the following e Mechanical switches in either normally open or normally closed configurations e Open collector transistor outputs e NPN style sensors such as the PMD X 170 O ptical Interrupter and the PMD X 171 Hall Effect Sensor and many other commercially available sensors e 5V logic signals e PNP style sensors or PLC outputs that supply 24 volts These devices can act as limit switches home indicators or other status information The PMDX 126 s inputs should be connected to the adjacent GND terminal left floating or driven from a 5V or 24V source Mechanical switches can be wired directly between the input pins on J11 or J12 and adjacent GND terminals N ote that the examples below show the signals connected to a particular input pin but the inputs may be connected to any of the input pins on the two connectors The sensor switch or input circuit must be capable of sinking 6 mA when pulling or driving the input signal to ground PNP sensors and PLC outputs must be able to source 6mA at 20 to 24 volts DC There is an LED next to each input terminal that lights when the input is e connected to GND on connectors J11 or J12 e or driven to GND on connectors J11 or J12 by a switch an NPN sensor or 5V logic signal which has its ground reference
11. color code Figure 4 Sample NPN and PNP Style Sensor Input Connections NOTE For reliable operation with PN P sensors we recommend powering PN P sensors from an external 24V supply W hile some PN P sensors may work when powered from the PMDX 126 s unregulated 12V supply we do not recommend this configuration 6 2 E Stop Input The E Stop input on connector J13 provides an interface for external emergency stop circuits This signal is active high such that a logic high tells the system to stop and a logic low means all is OK The E Stop input has an internal pull up resistor so that the default condition is E Stop This also means that the external emergency stop circuit must be capable of sinking at least 6 mA of current when the switch contacts are closed The E Stop signal must be grounded or driven low in order for the PMD X 126 s outputs to be enabled and for the pin 10 status signal to the PC parallel port to go low If you do not have an E Stop switch or circuit then install a jumper wire between the E Stop terminal and the GN D terminal on connector J13 the board ships with this jumper wire installed PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 21 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above The E Stop input should be connected to an external normally closed switch or group of
12. connected to a GND terminal on connector J11 or J12 e Or driven toward 24V by a PNP sensor or PLC output with the ground for the sensor or PLC 24V connected to a GN D terminal on connector J11 or J12 The LED is turned off when the input is e un connected e Or floating e or driven to 5V by a switch pull up resistor or 5V logic signal the 5V must be referenced to a GND terminal on connector J11 or J12 W hen the LED is lit the PMDX 126 will drive the corresponding PC parallel port pin low W hen the LED is off the PMDX 126 drives the corresponding PC parallel port pin high PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 19 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above NOTE The PMDX 126 s inputs are NOT compatible with 24V totem pole signals where the input is driven to 24V or driven to GN D All 24V signals must be PN P style where the signal is either driven to 24V or left floating WARNING The PMDX 126 s inputs are optically isolated from the PC side ground The terminals on J11 and J12 marked GN D are NOT the same ground as any other connector on the board Connecting any GND terminal on connectors J11 or J12 to the PCgnd terminal on another connector will defeat this isolation Normally Closed Switches The left hand drawing in Figure 2 shows an example of normally closed mechanical switches
13. parallel ports connect the first port as described above and the second port to connector J17 must use a D B25 to 26 pin Ribbon Header cable Connecting to a SmoothStepper Connect the PMDX 126 to the SmoothStepper using one or two 26 pin female to female ribbon cables Determine how you will provide power to the SmoothStepper Configure jumper JP3 on the PMD X 126 and the SmoothStepper jumpers according to the description in Table 7 in section 4 0 2 10 Test Your Configuration in Normal Mode The PMDX 126 has several different operating modes some of which have additional requirements for proper operation Starting to test your setup with the PMDX 126 in Normal mode removes most of those requirements and makes it easier to test the basic setup This allows you to test the wiring to from the PMDX 126 as well as the I O settings in your motion control software Mach3 EMC etc e Turn all of the DIP switches to the closed position this should be the default setting when we ship the board to you and the configuration used in step 2 2 e Apply power to the PMDX 126 and verify that the O utputs Enabled LED is on If the O utputs Enabled LED is not on all of the PMDX 126 s outputs will be disabled Using your CNC software on the PC e Configure and test the E Stop input on parallel port 1 pin 10 also present on parallel port 2 pin 10 e Configure your motor step and direction signals and using jog commands verify
14. switches all wired in series The external switch es should be wired between the E Stop pin and the ground signal on connector J13 such that the switch contacts open to signal an emergency stop condition WARNING Do not connect the E Stop circuit to any ground or common signal on the PM DX 126 other than on connector J13 Doing so will defeat the optical isolation provided by the PM DX 126 and possibly damage the board or your PC s parallel port The E Stop and Fault inputs are combined to drive pin 10 on the PC s parallel port and to enable or disable all of the PMD X 126 s output signals i e all PMD X 126 output signals are disabled as long as either the E Stop or Fault signals are active 6 3 Fault Input The Fault input provides an interface for external fault detection circuits This signal is active low meaning that a logic low or ground indicates a fault condition and a logic high or floating means all isOK 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 external fault signals should be tied together and connected to the PMD X 126 s Fault input provided that the fault signals can share the same ground reference the GN D terminal on J13 The Fault input has an internal pull up resistor and may be left unconnected when not used To indicate a fault condition drive this input t
15. 6 as shown in the following sections The PMDX 126 may be assembled with either of two styles of DIP switch as shown in Figure 1 below rocker style switches or sliding style switches Rocker style switches require that you push the switch down on one end or the other The switch is open if it is pressed down on the side towards the O PEN label on the switch body and away from the Config labels on the circuit board The switch is closed when it is pressed down on the side closest to the Config labels on the circuit board and away from the O PEN label on the switch body Sliding style switches operate by sliding the raised part of each switch towards one side or the other The switch is open when the raised part is towards the O PEN label on the switch body and away from the Config labels on the circuit board The switch is closed when the raised part is towards the Config label on the circuit board and away from the O PEN label on the switch body mmm BEN EET OPEN ae i Sliding DOOU HOO OULU Style 8 765 43 2 1 8 765 43 2 1 9909090000 O00 00000 OooooooO O O O O O O OOQ 2 223 02 2 23x 222322232 gaoagogaadG goagogaoadG oo NOOA WBN AN OAR WD eas OPEN muc OPEN o fe fe fe elelee Iga fe eee Rock
16. Error inputs are inactive WARNING In normal mode there is no protection against spurious movement of your machine when your motion control software is not running Specifically when the PC is going through its start up sequence it may toggle lines on the parallel port Therefore if using normal mode ensure that the PM DX 126 and or your machine is powered down or otherwise disabled until your control software is running 5 2 2 Normal Mode with Charge Pump In N ormal Mode with Charge Pump the PMD X 126 looks for a charge pump signal on parallel port 1 pin 17 see section 8 0 for more information The PMDX 126 powers up with its outputs disabled The outputs are not enabled until a valid charge pump signal is detected and the outputs are disabled as soon as the charge pump signal is no longer valid Note that the E Stop Fault and Gecko Error inputs can also disable the outputs at any time In order to use this mode your motion control software must be able to generate a suitable signal see section 12 0 Both Mach3 and EMC have this capability 5 3 Expanded Modes A normal PC parallel port allows for 12 output signals and 5 input signals W ith most breakout boards if you need more inputs or outputs you must add a second parallel port to your PC The PMDX 126 s expanded modes allow you to access more input and output signals while still using a single parallel port Some example uses of expanded modes include e
17. Geckodrive servo products that can sense faults and also reset and enable G eckodrive servo products from the computer e E Stop Fault ERR RST and Charge Pump timeouts turn off all outputs without assistance from host software e Provides one 30 ampere electromechanical relay useful for spindle control e Provides one 10 ampere electromechanical relay for auxiliary functions e Relays have MO V arc suppressors for longer life of contacts e Can provide 5 axis from a single parallel port or 6 axis with the 6 axis cloned in hardware from the first axis PCB Revision PCB 485A Serial N umbers 28289 and above Powered directly by AC mains 115 or 230 volts switch selectable Self resetting poly fuse protects mains power input Has option card connector for directly mounting the PMDX 107 or using a ribbon cable to the PMDX 106 spindle speed controllers and also other future products Buffered step and direction available as screw terminal blocks and as a ribbon header for direct connection to driver boards with ribbon header inputs for parallel port signals Terminal blocks also provide 5 volts and Ground along with Step Dir outputs to drivers Screw terminal blocks for isolated status inputs also provide 5 volts and unregulated 12 volts to power sensors such as the PMD X 170 PMDX 171 and NPN proximity sensors Status sensor inputs work with mechanical switches NPN sensors 5 volt logic signals and PN P sensors o
18. PMDX 126 Multi Mode Break O ut Board User s Manual I NE 70005 H E E Ps FE i TIT SS ess G SP iiiitiii wr Jm SO SCVSSE GOUSTTIVGSES LULA s e e a o L L L4 E E s e Ww Document Revision 1 1 Date 9 August 2011 PCB Revision PCB 485A Revision A3 Serial N umbers 28289 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 126 Manual 11 doc 2010 Practical Micro Design Inc Page 1 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above Table of Contents 1 0 QWVerVIQWs coo reete eade bo a e d d n a rd dd do n v nea uda da t 11 Important Safety NOEMA ON zucca eret eene a ce ene cnc n Re RR t dec 12 W arranty Summary 13 Trademarks 14 Feat l8s x iacere e nda nes 1 5 U pdates to This Manual and Application N otes 2 0 Quick Start GUlde unite pore rodeo d eR ee n sie ee are Ue dO a cd e a 21 Select AC Mans VOTLagg tie anara cbe nein Deer eei ea ERROR roS a Te te n 22 Initial Power On 2 3 Connecting Motor Driver Sa ccrte cti fee cre reete rette rede Cen erobern uerb rer erre seniors 2 3 1 Connecting to PMD X 133 or PMDX 134 ssssssssssseerenrtnntnen tnnt tentent 2 3 2 Discrete W iring to Motor DriVerS sssini 24 Test Motor Dr
19. Ratings 10 amperes at 120 VAC 10 amperes at 240 VAC 5 amperes at 24 VDC Environmental Temperature 0 to 55 C Relative Humidity 20 to 80 relative humidity non condensing Page 33 of 34 PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 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 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 rep
20. Revision 1 1 Serial N umbers 28289 and above expanded mode For a full explanation please download the plug in documentation from the Support gt D ownloads area of our web site NOTE neither Expanded I O or Expanded Output mode outputs 16 and 17 on connector J6 and A B C and D on connector J5 have a slow update rate which makes them unsuitable for use as step and direction signals They can be used for general control signals like coolant on off or PLC inputs Due to limitations in the current Mach3 implementation these outputs are updated once every 1 to 2 seconds See the plug in documentation for more information Expanded I O and Expanded Input modes require a charge pump signal on parallel port 1 pin 17 see section 8 0 for more information on the charge pump signal Expanded I O and Expanded Output modes require a bit stream signal on parallel port 1 pin 16 Please refer to the PMDX 126 plug in documentation for more information on this signal WARNING The corresponding relay jumper JP1 for relay K1 and JP2 for relay K2 must be set to multimode in order for the expanded relay functionality to be available 5 3 4 Expanded I O Mode Expanded I O M ode provides the maximum functionality from a single parallel port It is not intended for use with dual parallel ports or with a SmoothStepper In Expanded I O M ode using the Mach3 PMD X 126 plug in the PMD X 126 provides the following signals via paral
21. air 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 consequential special or otherwise and whether such damages are incurred by the person to whom this warranty extends or a third party PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 34 of 34 9 August 2011 All Rights Reserved
22. al Micro Design Inc Page 28 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 10 10 Reserved Connector J14 WARNING DO NOT CONNECT ANYTHING TO J14 THIS CONNECTOR IS FOR FACTORY USE ONLY 10 11 Parallel Port 1 Connectors J15 amp J16 The PMDX 126 provides a 25 pin D connector and a 26 pin ribbon cable header for the parallel port 1 The pin out of the 26 pin ribbon cable header J16 matches the industry standard for D B 25 signals on aribbon cable and is not shown in the table below NOTE Some printer cables do not have good signal shielding In addition some cables omit some of the status or control signals such as pin numbers 13 and 14 We recommend using cables that are listed as IEEE 1284 compliant ie US iel 1 ie 2 PMDX 126 Signal Comment eo elay control and connector J6 See sections 3 3 and 4 0 for relay information 2 2 pues 5 5 jOutput signals to connectors J1 N ormally used for step and direction signals 6 6 through J4 and J19 but may be used as generic outputs 8 8 high wh S l j Driven high when E Stop or Fault is active or E I 12 12 GgsttusiputfromJ12 o 13 13 Stausinpufrom I2 5 o a l 15 15 GgsttusinutfromJl2 Jo ooo 16 16 QControlOutpttoconnector o 0000 0 0 PC Ground LE ETEF RI TERRENI Table 28 PC Parallel Port Connectors J15 and J16
23. amps down from 1 000 to approx 25 steps per second and then stops generating step pulses It also toggles the test mode direction so that the next time the push button is pressed the motor will move in the opposite direction This mode can be used to set the adjust trim pot on Gecko stepper drivers The Status LED will turn on solid as long as the push button is pressed The Status LED should turn off as soon as the push button is released If the LED remains on after the push button is released some type of fault was detected Note that if the push button is pressed while a fault is indicated the push button serves to attempt to clear the fault it does not enter test mode or generate step pulses W hen a fault is indicated it takes two button presses to enter test mode one to clear the fault and the second to enter test mode Each time test mode is entered the motor direction is reversed from the previous test mode It is possible to tap the push button to force a direction reversal without holding the switch long enough to generate a step pulse In this manner you can achieve successive runs of slow steps in the same direction WARNING If you press the push button for test mode and nothing happens a fault may have occurred while starting test mode Release the push button and look at the Status LED If there was a fault the LED will remain on or flash to indicate a fault condition If the LED turns off indicating no fault cond
24. d 14 for relays K1 and K2 respectively from the expanded mode bit stream by the O ption Connector J18 or by the outputs enabled signal See sections 3 0 and 4 0 for more information The connector for relay K2 J10 has a terminal labeled MO V This terminal is connected to the relay s COM terminal through an MO V metal oxide varistor see http en wikipedia org wiki Varistor The MOV helps absorb any inductive voltage spikes that may be generated when opening the relay contacts for example when powering a motor or solenoid like a vacuum pump or coolant valve This in turn helps prevent arcing on the relay contacts and extends the life of the relay To use the MOV connect your load to the MO V terminal in addition to the N O or N C terminal A C Power Vacuum Pump Solenoid etc D N O D Coolant D D J10 Figure 5 Sample MOV and Relay Contacts Connections 7 3 Restart Output The Restart output is a pair of solid state relay contacts on connector J13 labeled RST and CO M that are closed for approximately 2 seconds every time the PMD X 126 enables its outputs The Restart output can be used to reset the Gecko G 320 G 320X G 340 step servo drivers or as a momentary machine enable pulse Please see the application notes section on our web site for example configurations using the Restart output http www pmdx com then look on the Support page 8 0 Charg
25. d input for parallel port 2 pin 13 or multiplexed onto port 1 pin 13 8 GND Isolated ground reference H O ptically isolated input for parallel port 2 pin 15 or multiplexed onto port 1 pin 15 Isolated ground reference Table 25 Secondary Status Input Connector Pin O ut J11 10 8 Primary Status Input Connector J12 Pin Number Label Description Unregulated 12V power supply referenced to the GN D pins on this connector Regulated 5V power supply referenced to the GND terminals on this connector 4 GND Isolated groundreference o 6 GND Isolated groundreference 8 GND Isolated groundreference 9 I5 Opticalyisolatedinputforparalel port 1 pin 15 Table 26 Secondary Status Input Connector Pin Out J11 10 9 E Stop Fault Gekco Error and Restart Connector J13 Pin Number Label Description Cd 1 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 will disable the outputs and relays on the PMD X 126 board 4 ERR Gecko Error Input 0 0 0 0 6 COM Common terminal for Gecko Error Input and Restart Output Table 27 E Stop Fault Gecko Error and Restart Connector Pin Out J13 PMDX 126 Manual 11 doc 2010 Practic
26. e Pump The charge pump circuit also called a watchdog circuit is designed to disable the PMD X 126 and all motor drivers when the software running on the PC stops working properly The charge pump also keeps the PMDX 126 disabled while the PC starts up i e all outputs are disabled until the PC boots and the CN C controller application software is running It does this by monitoring pin 17 on the first PC parallel port W hen this signal is toggling between high and low the charge pump is OK W hen pin 17 stops toggling the charge pump is not OK The DIP Switch mode settings determine whether the output from the charge pump is used to enable and disable the PMD X 126 outputs see section 3 1 This charge pump circuit is designed to work with any software that can toggle pin 17 on the PC parallel port If your software does not support this feature you must use the PMD X 126 in Normal Mode PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 23 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above without Charge Pump see section 3 1 See section 12 0 Electrical and Environmental Specifications for information on minimum charge pump frequency The state of the charge pump signal will not affect the E Stop status that is output on pin 10 to the PC This is to prevent lock up of the software Mach3 requires that the Emergency S
27. e pin outs only differ for the first four pin combinations pins 2 to 9 PMDX pin out is compatible with PMDX drivers and motherboards such as the PMDX 132 PMD X 133 and PMD X 134 as well as Rutex Hobby CN C and other products that expect the step signals on the odd numbered pins and the direction signals on the even numbered pins The Alternate pin out is compatible with X ylotex Mechatronics and other products that expect the step signals on the even numbered pins and the direction signals on the odd numbered pins NOTE Inorder to use the PMDX 126 s built in test function you must conform to one of the two pin out configurations shown in Table 9 below If you do not need the test functions any pin out may be used for the step and direction signals PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 15 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above Config6 Config5 Config4 Config3 Config2 Configi Step Dir Connector Closed Closed Closed Open a closed Pins Pin te 19L km cm om ue om Smet Rime iem O pen Pin 4 Pin 5 also J1 LN mmn O pen Pin 6 Pin 7 also J1 EOS ee t P m ee a open sen ooe oni ee Table 9 Test Mode Step and Direction Pin Out Mapping NOTE Configl switch closed uses the PMD X style step dir pin out while Configl open uses the alt
28. egrated 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 PMDX 126 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 NOTE f you have an item requiring service please see the W arranty and Repairs page on the PMD X web site http www pmdx com for return instructions In general the purchaser must pay shipping to send the unit to PMDX For repairs covered under warranty and with return shipping to a USA address PMDX 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 Please see the W arranty and Repairs page on our web site http www pmdx com for full details of our repair and shipping policies 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 EMC Linux CNC http www linuxcnc org G201X G203V G320X and Geckodrive Geckodrive Inc http www geckodrive com Mac
29. eleased or the E Stop circuit is de activated See section 6 2 for more information about the E Stop input 2 6 Connecting Limit amp Home Switches and Other Inputs Connect any limit or home switches spindle sensors etc to the PMDX 126 s input terminals See section 6 0 for more information PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 6 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 2 7 Connecting CMOS 5V Outputs The output signals on connectors J5 and J6 are TTL CMOS level digital outputs i e OV to 5V approximately Connector J6 has signals from parallel port 1 pins 1 14 16 and 17 labeled 1 14 16 and 17 Connector J5 has signals from parallel port 2 pins 1 14 16 and 17 labeled A B C and D or these can be driven from the first parallel port using the PMD X 126 s expanded modes see section 5 3 2 8 Connecting Relay Outputs Relay K1 provides a set of normally open contacts on connector J9 Relay K2 provides common normally open and normally closed contacts as well as a MO V protection terminal See section 7 2 for more information 2 9 Connecting to a PC or SmoothStepper Connectingto a PC If you are using one parallel port connect that to either J15 using a D B25 male to male printer cable or J16 using a D B25 to 26 pin Ribbon Header cable If your PC has two
30. enter test mode or generate step pulses W hen a fault is indicated it takes two button presses to enter test mode one to clear the fault and the second to enter test mode Each time test mode is entered the motor direction is reversed from the previous test mode It is possible to tap the push button to force a direction reversal without holding the switch long enough to generate a step pulse In this manner you can achieve successive runs of slow steps in the same direction PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 16 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above WARNING If you press the push button for test mode and nothing happens a fault may have occurred while starting test mode Release the push button and look at the Status LED If there was a fault the LED will remain on or flash to indicate a fault condition If the LED turns off indicating no fault condition then double check the E Stop LED and E Stop wiring 5 4 3 Push to Run Push to Stop W hen in this test mode pressing and releasing the Test push button when no fault is indicated causes the PMDX 126 to start generating step pulses ramping up to 1 000 steps per second It then continues to generate step pulses at 1 000 steps per second until the Test push button is pressed again O n this 2nd press of the Test push button the PMDX 126 r
31. er lo ddl do dd dlo lololo lo Style 8 7 654321 8 7 65 43 2 1 O0 070 0 070 1 Q O O G O 00 0 OooooooO Q OooooooOo Oo 22222222 22222222 gagogaoaadG gagogadG AN OAR WD oo NOOA WD Example 1 Example 2 Figure 1 Sample DIP Switch Settings Example 1 shows the DIP switches as shipped from the factory All switches are closed Example 2 shows the DIP switches set so that Config 1 is open and all other switches are closed 3 4 Operational Mode Switches The O perational Mode switches are read only on power up or when the Test push button is pressed This means that if you change the settings on these switches you must power the PMD X 126 off and back on or press amp release the Test push button in order for the change to take effect PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 8 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above Run in Expanded Input Mode See section 5 3 O pen Closed O pen Do Not Use will keep EStop asserted and flash an error code on the Status LED see section 9 1 Test Mode PMDX pin outs see section 5 4 Test Mode Alternate pin outs see section 5 4 Table 1 Operational Mode DIP Switch Settings 3 2 Auxiliary Mode Switches For all operational modes except the two test modes DIP switches Configo through Config4 determine the auxiliary optional functions on
32. ered from 115 120VAC or 220 230 240VAC There is a voltage selector switch next to the AC Mains connector J8 Set this switch to the appropriate setting for your AC voltage Then connect your AC power to the PMDX 126 DO NOT APPLY POWER YET 2 2 Initial Power On Set all DIP switches to closed see section 3 0 to select Run Normal mode this should be the default setting when we ship the board to you Also verify that the jumper wire is still installed on connector J13 from the E Stop terminal to the GND terminal Apply power to the board and observe the Power O n E Stop and O utputs Enabled LEDs The Power On LED should turn on The E Stop LED should turn on for approximately 1 second and then turn off After the E Stop LED turns off the O utputs Enabled LED should turn on and stay on NOW POWER OFF THE BOARD 2 3 Connecting Motor Drivers 2 3 4 Connecting to PMDX 133 or PMDX 134 Before you connect the PMDX 133 or PMDX 134 motherboards to the PMDX 126 follow the steps in the Quick Setup Guide in the PMDX 133 or PMDX 134 User s Manuals O nce you have the motherboards and Geckodrives configured and tested the motor power then use a 26 pin female to female ribbon cable to connect the PMD X 126 from connector J19 to the PMDX 133 or PMDX 134 2 3 2 Discrete Wiring to Motor Drivers The PMDX 126 can output step and direction signals on any of its output pins except when in one of the expanded m
33. ernate step dir pin out These definitions matter only while in Test Mode For normal operation any data pin may be used for either step or direction signals Config 7 Test mode is push and hold to run Open Test mode is push to run push to stop Table 10 Test Start Stop Mode DIP Switch Settings 5 4 2 Push and Hold to Run W hen in this test mode pressing and holding the Test push button when no fault is indicated turns the Status LED on solid and causes the PMD X 126 to generate the following step profile 1 Brief pause approx 1 2 second 2 5 steps at a rate of 2 steps per second 3 Ramp up to 1 000 steps per second and maintain that rate until the push button is released 4 5 Ramp down from 1 000 steps per second to 25 steps per second then stop Toggle the test mode direction so that the next push button press will move the motor in the opposite direction except as described below If the push button is released during step 1 of the test profile no step pulse is generated but the direction signal is toggled If the push button is released during step 3 of the test profile it immediately ramps down from the current step frequency and then stops i e it does not wait until the ramp has reached it maximum frequency before ramping down and stopping Note that if the push button is pressed while a fault is indicated the push button serves to attempt to clear the fault it does not
34. h3 ArtSoft http www machsupport com SmoothStepper W arp9 Tech Design Inc http www warp9td com PMD X 104 PMD X 106 PMDX 107 PMDX 108 PMD X Practical Micro Design Inc PMD X 132 PMD X 133 and PMD X 134 http www pmdx com PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 4 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual Document Revision 1 1 1 4 Features The PMDX 126 has the following features e Provides up to 16 outputs and 9 inputs by using dual parallel ports or a single port by using expanded mode drivers e Integrates well with SmoothStepper by providing dual parallel ports with ribbon cable connections mounting holes for stacking SmoothStepper onto the PMDX 126 as a daughter board and power to run the SmoothStepper fed via ribbon cables e Supports up to 12 outputs as step and direction signals for up to 6 motor axes using dual printer ports or Smoothstepper e Mach software plug in provided to support enhanced I O features e On board LED indicators on all signals e Terminal strip outputs provided for external LEDs showing status of Power O n E Stop Charge Pump and step signal activity e All status inputs are optically isolated e All parallel port signals are terminated and filtered to help resist noise problems e All step direction and control output signals are buffered with 16 mA drivers e Special isolated interface to sense ERR RST signal used by
35. in 1 Relay K1 is controlled from parallel port 1 pin 1 multimode Relay K1 is controlled as determined by DIP Switch Config 7 see section 3 3 No jumper installed Relay K1 is de energized disabled You can also install the jumper sideways on the center pin of the jumper Table 5 Jumper JP1 Settings Relay K1 Control PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 10 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above Pins Label FuncionofJP2 S Pin 14 Relay K2 is controlled from parallel port 1 pin 14 multimode Relay K2 is controlled as determined by DIP Switch Config 8 see section 3 3 No jumper installed Relay K2 is de energized disabled You can also install the jumper sideways on the center pin of the jumper Table 6 Jumper JP2 Settings Relay K2 Control 1 2 On PC 45V 5V relative to PC ground is connected to J16 and J17 pins 26 Use this setting if you want to power a SmoothStepper from the PMDX 126 s power supply USE THIS SETTING ONLY IF YOU ARE POWERING A SMOOTHSTEPPER FROM THE PMDX 126 NOTE You must change the SmoothStepper s power supply jumpers in order to have it powered by the PMDX 126 Remove any jumper on the SmoothStepper JP4 this disconnects both the USB power and the External 5V Then install a jumper on one or both of the two pin jumpers next to
36. ition then double check the E Stop LED and E Stop wiring 5 5 Pulse Stretch Mode Pulse stretch mode is designed for use with a sensor that may generate a pulse that is too narrow to be guaranteed to be seen by the CNC software For example with Mach3 running with a 25 KHz kernel rate and the PMD X 126 operating in Expanded I O Mode the pulse from a spindle sensor must be at least 80 microseconds wide Depending on the spindle sensor design and spindle speed this may not be possible W ith pulse stretching mode the PMD X 126 extends the trailing edge of the signal to guarantee that the PC or SmoothStepper sees a pulse that is at least 100 microseconds wide 5 5 1 Pulse Stretch Active Low Mode Pulse stretch active low mode operates with the following constraints O perates on the Pin 15 input only J12 pin 9 Assumes the signal from the sensor is active low driven to GND when active Your CNC software must be configured with the pin 15 input as active low Stretches the active low pulse to provide a minimum 100us wide pulse to the PC The active falling edge of the PC signal is aligned with the signal from the sensor The inactive rising edge is delayed going to the PC PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 17 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 5 5 2 Pulse Stretch Active High Mode P
37. iver Connectors et occorre ct trees ce ent bel b e racio nas dere RE borne Do Ee 2 5 Connect E Stop Switch es sneinen a 2 6 Connecting Limit amp Home Switches and O ther Inputs 2 7 Connecting CMOS 5V O utputs one ceecsssecceseeesssteeesssnseesseesseseeessies 2 8 Connecting Relay O UtpU S ee eseseecsssescsssessssstesssseessssseesesssnssessanteesssses 2 9 Connecting to aPC or SmoothStepper 210 Test Your Configuration in Normal Mode 211 Test Your Configuration with the Charge Pump 242 Test Your Configuration in Expanded Mode nennen rnnt trente rtis 3 0 lt lt DIP Switch Settings oie Leere e ence notice eddie ete ep ede ecd 31 Operational Mode SWIECls nitet Pe ee o od plana at edt ad n dn rece 32 Auxiliary Mode Switches 33 Relay Mod Switches rt teet tete trt ree cecidi eicere cett bee Ure re a AQ Jumper Settings edet rni reisen iere tetro dicte Dr ded ede are 5 0 Operation Modes acepte nei pde a e etn UR E prod a ce LT 51 C hanging Modes 5 2 N ormial Modes cionem tree anche ni n n o e RETREAT RR RU N 5241 Normal Mode without Charge Pump ttes 5 22 Normal Mode with Charge Pump trennen tenter ttti tenis 53 Expanded MOd S un tape ee ted be pe Dum cile pct dua e cR Pad 5 31 Expanded 1 0 Mode oe dee pte teta ete ie tree d n 5 32 Expanded O utput Mode ur te ete eee ih Te E e 5 3 3 Expanded Input M Ode to t notet eot eo eg n end el De edo esheets 54 Test
38. l Port 1 pin 3 Usually X axis step and direction o 7 4 Parallel Port pin 4 m me o 5 Parallel Port 1 pin 5 U sually Y axis step and direction 11 6 Paralel Port 1 pin 6 ET m Parallel Port 1 pin 7 Usually Z axis step and direction 15 8 Parallel Port 1 pin 8 ee NU 9 Parallel Port 1 pin 9 Usually A axis step and direction 19 10 No Connection 2 13 No Connection O Special Function Reserved do not connect Special Function Reserved do not connect Parallel Port 2 pin 14 Possible 5th axis direction signal P45 No Connection LA Parallel Port 2 pin 16 Possible 6th axis step signal Parallel Port 2 pin 17 Possible 6th axis direction signal 12 14 16 18 19 20 21 22 18 20 22 24 23 2425 amp Ground D epends on jumper JP4 setting see 3X ww 0 ptional PG v9V section 4 0 for more information Table 30 Alternate Step Direction Connector J19 NOTE 1 The pins onJ19 are numbered with the odd pins in one row and the even pins in the other row which is the standard for ribbon cable connectors PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 31 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 11 0 Mechanical Specifications m 5 000 gt 6 each holes for 6 screw to mount board
39. lel port 1 Please refer to the PMD X 126 Mach3 plug in documentation for a full description of the available signals 10 full speed output signals on J1 J2 J3 J4 and J6 2 slow update rate signals on J6 see note above about update rate 4 slow update rate signals on J5 see note above about update rate 2 relay control signals with slow update rate 1 E Stop input signal on parallel port pin 10 8 input signals from J11 and J12 multiplexed onto parallel port pins 11 12 13 and 15 Use of Expanded I O M ode with Mach3 requires the PMD X 126 Mach3 plug in which may be downloaded from our web site at http www pmdx com see the Support page for the downloads page Please refer to the plug in documentation for information on how to configure Mach3 to access the additional input and output signals Use of Expanded I O M ode with EMC requires an EMC HAL configuration that supports Expanded I O M ode Expanded I O M ode is not compatible with the PMD X 106 when the PMD X 106 is plugged into the 10 pin connector J18 This mode is compatible with the PMD X 107 In order to use the PMD X 106 with a PMD X 126 in Expanded I O M ode you must connect the PMD X 106 using discrete wires and configure the spindle PW M and direction signals to use pins 1 to 9 or 14 5 3 2 Expanded Output Mode Expanded O utput Mode provides the additional 4 output signals and 2 relay control signals that Expanded 0 Mode provides without the multiplexed in
40. n ng 10 0 Connector Pin out Summary sese ttn tete tent ttt notti tei ttti ttti ttn T0 Data Bus Connectors 1 J2 J3 and J4 narrasa ene ete fce cedes tee d Rt 102 Secondary Control Output Connector J5 10 3 Primary Control O utput Connector J6 sees 104 External LED Connector J7 sesser 105 AC Power Connector J8 eee 10 6 Relay Contact Connectors J9 and J10 10 7 Secondary Status Input Connector LL i t teret e Die deridet 10 8 Primary Status Input Connector J12 10 E Stop Fault Gekco Error and Restart Connector J13 10 10 Reserved Connector J14 ssssseeeennen ntn 10 11 Parallel Port 1 Connectors J15 amp J16 10 12 Parallel Port 2 Connector J17 seses 10 13 Option Card Connector J18 sss 10 14 A Alternate Step Direction Connector J19 sssseeeeeeeeee nennen nter nennen tnnt tennis 110 Mechanical Specifications cit interest tete da e t d t o a E D gin 12 0 Electrical and Environmental Specifications sse tnnt rnnt ApDendbcA Wal rant ya ca cmt titer iata penc t ideo na e erba taie dan ea a EU Po cerca Gag PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 3 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 1 0 Overview This document describes the configuration and operation of the PMDX 126 Multi Mode Break O ut Board The PMDX 126
41. ne of the test modes see section 5 4 the relays are forced to the de energized state The Relay Mode switches are read continuously and any change takes effect immediately Unlike the operational mode switches you do not need to press the Test button to activate the new relay settings WARNING The corresponding relay jumper JP1 for relay K1 and JP2 for relay K2 must be set to multimode in order for these DIP switch settings to have any effect If either of the jumpers is configured to any setting other than multimode the corresponding DIP switch will have no effect on the relay PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 9 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above Sang comg7 RelayKirunctin 5 5 5 5 Setting Config 7 Relay K1 Function pin 1 DIP Switch Config 7 has no effect on relay K1 Relay K1 is controlled pur from parallel port 1 pin 1 multimode e If the PMDX 126 is in Expanded I O or Expanded Output mode see section 5 3 then relay K 1 is controlled via expanded I O data e If the PMDX 126 is in Jumbo Mode or Jumbo Mode with Touch Probe Merged Inputs see section 5 7 then relay K 1 is controlled via parallel port 1 pin 16 e Otherwise relay K1 will remain de energized disabled multimode O pen Relay K 1 is controlled from the option card ins
42. nector Pin out Summary The PMDX 126 contains several connectors as listed in Table 14 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 look on the bottom ofthe circuit board J1 J2 J3 J4 Secondary Control O utputs parallel port 2 pins 1 14 16 and 17 Parallel port 1 25 pin D connector Parallel port 2 26 pin ribbon cable connector Table 14 Summary of PMDX 126 Connectors PMDX 126_Manual_11 doc 2010 Practical Micro Design Inc Page 25 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 10 1 Data Bus Connectors J1 J2 J3 and J4 The data bus connectors are labeled to denote which pin on parallel port 1 that is associated with each connector pin Each connector also provides a PC referenced 5V and GND signal either of which may be used as the common signal for your motor driver s step and direction inputs PinNumber Label Description PC 45V 5V power supply referenced to the PC and on pin 4 8 Buffered signal from pin 8 of the parallel port 1 3 9 Buffered signal from pin 9 of the parallel port 1 4 PCgnd Ground referenced to the ground on
43. o ground via either open collector or TTL style drivers or mechanical switches The fault circuit must be capable of sinking 6 mA of current when pulling or driving the Fault signal to ground The E Stop and Fault inputs are combined to drive pin 10 on the PC s parallel port and to enable or disable all of the PMD X 126 s output signals i e all PMD X 126 output signals are disabled as long as either the E Stop or Fault signals are active The PMDX 126 s Fault signal must be either driven high 5V or allowed to float in order for the outputs to be enabled and the E Stop status signal to the PC parallel port on pin 10 to go low signaling O K If you do not have any fault detection circuitry leave the Fault input unconnected 6 4 Gecko Error Input The Gecko step servo drivers models G 320 G320X and G 340 provide an error signal that is both an output from the Gecko driver and a reset into the driver The PMDX 126 provides an isolated input that can connect to this signal and allow the G ecko s error signal to trigger an E Stop condition to the PC W hen the Gecko Error Input signal is active the PMD X 126 will pulse the E Stop signal to the PC for approximately 1 second and then flash an error code on the Status LED active means driven to zero volts with respect to 5 volts connected to the PMDX 126 s COM terminal on connector J13 The PMDX 126 provides a Restart Output that works in conjunction with the Gecko err
44. odes see section 5 3 for details This allows for configurations where more than 4 axis of Step and direction are needed Note that some of the control outputs parallel port pins 1 14 16 and 17 may be used for other functions thereby limiting their use as step and direction outputs Each output signal connector has both a ground reference terminal and a 5V terminal This allows the use of drivers that require either a ground common or 5V common reference for their step and direction inputs NOTE When using outputs 1 14 16 17 A B C or D for step and direction signals connect to the step signal to pins 1 16 A or C in order for the activity monitor to function correctly see Steps LED in section 9 0 2 4 Test Motor Driver Connections Power on the board and use the PMD X 126 s built in test modes to verify that you have the step and direction signals wired correctly between the PMDX 126 and your stepper drivers See section 5 4 for more information on the PMD X 126 s test modes 2 5 Connect E Stop Switch es If your system will use an emergency stop circuit remove the jumper wire from J13 and connect your E Stop circuit to the PMD X 126 on connector J13 from the E Stop terminal to the GND terminal Verify that the red E Stop LED on the PMD X 126 turns on when the E Stop switch is pressed or the E Stop circuit is activated Verify that the LED turns off when the E Stop switch is r
45. onnected to the PMD X 126 input pin The same connections can be used for the PMD X 171 Hall Effect sensor Figure 4 shows an example using N PN style sensors Many commercial sensors will need to be powered from the unregulated 12V instead of the 5V shown as the alternate power connection in Figure 4 PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 20 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above PMDX 170 Slotted Optical Sensor or PMDX 171 Hall Effect Sensor TTI D GND D 2 D GND D E qi en a GND LL EF 00 e D Alternat T ernate GND D Connections E E 5V D gt 3 412U D J12 or J11 Figure 3 Sample PMDX 170 PMDX 171 Input Connections NPN Style Sensors PNP Style Sensors k wi D GND GND D be O GND GND D 3 gt 43 D Black out N O S aee D o GND 2 GND D een E z 15 S S M15 D 9 S GND amp GND D Bo e c dE 83 sv J b ge D g 2 a Brown a 120 Dss eS d 12U p t D Brown Supply Alternate power supply connection D supply J12 or J11 if sensors can use a 5V supply J12 or J11 External 24V DC Sensor Power Supply Shows the typical 3 wire color codes and power for sensors that see note below require a 10 to 30V supply Verify your sensor s
46. or input so that the PMDX 126 can automatically pulse the G ecko s error signal to reset the drivers See section 7 3 for more information on the Restart Output Also see the application notes section on our web site for example configurations using the Gecko Error Input and the Restart output http www pmdx com then look on the Support page PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 22 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 7 0 Output Signals 7T 1 General Purpose Outputs The PMDX 126 provides up to 16 general purpose outputs 12 from parallel port 1 and 4 from parallel port 2 or all from parallel port 1 in Expanded I O or Expanded Output modes see section 5 3 These outputs are 5V digital CMOS outputs and are buffered but NOT optically isolated Motor drivers and output devices often provide their own built in isolation 7 2 Relay Contact Outputs The PMDX 126 has two on board relays Relay K1 provides connections to its normally open N O set of contacts Relay K1 always has an MO V connected across its terminals see below for information on MOVs Relay K2 provides connections to both its normally closed N C and normally open contacts as well as an MOV protection terminal see below Depending on DIP switch and jumper settings the relays can be controlled by parallel port 1 pins 1 an
47. provides an interface between a PC and a multi axis step amp direction controlled motor system or other user equipment This document pertains to the following versions of the PMD X 126 Circuit Board Revision PCB 485A marked on the bottom of the board Revision A3 marked on silk screen block above serial number Serial N umber Range 28289 and above 1 4 Important Safety Information The PMDX 126 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 126 is not guaranteed to be fail safe The system into which the PMD X 126 is installed should provide fail safe protection and emergency stop capability The PMDX 126 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 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 126 may be int
48. put signals It is not intended for use with dual parallel PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 13 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above ports or with a SmoothStepper In Expanded Output M ode using the Mach3 PMD X 126 plug in the PMD X 126 provides the following signals via parallel port 1 Please refer to the PMD X 126 Mach3 plug in documentation for a full description of the available signals 12 full speed output signals on J1 J2 J3 J4 and J6 pin 17 must be the charge pump signal 4 slow update rate signals on J5 see note above about update rate 2 relay control signals with slow update rate 1 E Stop input signal on parallel port pin 10 4 input signals on parallel port pins 11 12 13 and 15 Use of Expanded O utput Mode with Mach3 requires the PMD X 126 Mach3 plug in which may be downloaded from our web site at http www pmdx com see the Support page for the downloads page Please refer to the plug in documentation for information on how to configure Mach3 to access the additional output signals Use of Expanded O utput Mode with EMC requires an EMC HAL configuration that supports Expanded O utput Mode Expanded Output M ode is not compatible with the PMDX 106 when the PMDX 106 is plugged into the 10 pin connector J18 This mode is compatible with the PMD X 107 In order to use
49. put signals Motor drivers and output devices often provide their own built in isolation There are screw terminal connectors for all signals on parallel port 1 and for the control outputs pins 1 14 16 and 17 and status inputs pins 11 12 13 and 15 for parallel port 2 PMD X sells option boards that can provide optically isolated inputs or outputs for the data bus on parallel port 2 see our PMD X 108 model line PMDX also sells isolated relay outputs for use with the signals on connectors J5 and J6 see our PMDX 104 PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 11 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above In either of the two normal modes relay K1 can be driven from parallel port 1 pin 1 from the option card installed in J8 a PMD X 107 for example or disabled Relay K2 can be driven from parallel port 1 pin 14 by the O utputs Enabled signal or disabled See jumpers JP1 and JP2 in section 4 0 and DIP switches Config 7 and Config 8 in section 3 3 There are two different normal modes as determined by the DIP switch settings see Table 1 in section 3 1 These modes are described in the following sections 5 2 1 Normal Mode without Charge Pump In N ormal Mode without Charge Pump the PMDX 126 s outputs are enabled shortly after power up and remain enabled as long as the E Stop Fault and Gecko
50. r J19 is 500 mA PMD X s experiments with a sample SmoothStepper shows that it draws approx 120 mA when powered by a PMD X 126 External Loads from Isolated Power Supply 5V Regulated 5V supply on connectors J11 and J12 Maximum current 250 mA see note 2 below 12U Unregulated 12V supply on connectors J11 and J12 Maximum current 250 mA see note 2 below NOTE 2 Total current supplied to external loads from both 5V and 12U on J11 and J12 is 250 mA Inputs E Stop and Fault Low must be able to sink 6 mA at less than 0 8V High must be open circuit or greater than 3 0 volts and no greater than 25VDC Response time is 20 us Inputs all except E Stop and Fault Low must be able to sink 6 mA at less than 0 8V High must be open circuit or greater than 3 0 volts and no greater than 6VDC except PN P signals Active PN P signals must be able to source 20 to 24V DC at 6mA minimum Inactive PN P signals must be open circuit or have less than 0 1mA of leakage current Response time is 20 us Outputs High at least 3 8V driving a 16mA load Low at most 0 8V sinking 16mA Maximum data rate 500 KHz Relay K 1 Contact Ratings 30 amperes at 120 VAC 30 amperes at 240 VAC 10 amperes max at 24 VDC Charge Pump Min Frequency 150 Hz minimum square wave appearing on parallel port 1 J15 or J16 pin 17 PMDX 126 Manual 11 doc 9 August 2011 2010 Practical Micro Design Inc All Rights Reserved Relay K2 Contact
51. r PLC outputs that source 24 volts DC Pulse stretch circuit to allow a narrow pulse encoder output to be used as lathe index signal Built in test for generating step signals without need of a host computer Charge Pump watchdog function has enhanced timing algorithm to avoid teasing by W indows boot process The 8 data bits of the second parallel port while not connected on the PMD X 126 can be supported with the optional PMDX 108 boards which feature flow through ribbon connections The logic level control output connectors can be connected directly to and power the PMDX 104 board to provide 4 medium current isolated mechanical relay outputs Microprocessor and programmable logic allow for the future addition of more features 1 5 Updates to This Manual and Application Notes 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 126 page follow the links from the main page O Ider versions of this manual are available on the User Manual Archives web page Also check on the Support web page for application notes related to the PMDX 126 PMDX 126 Manual 11 doc 9 August 2011 2010 Practical Micro Design Inc All Rights Reserved Page 5 of 34 PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 2 0 Quick Start Guide 2 1 Select AC Mains Voltage The PMDX 126 can be pow
52. r to the plug in documentation for information on how to configure Mach3 to access the additional input signals Use of Expanded Input M ode with EMC requires an EMC HAL configuration that supports this mode Expanded Input M ode is compatible with the PMD X 106 when the PMD X 106 is plugged into the 10 pin connector J18 This mode is also compatible with the PMD X 107 when the PMDX 107 is set to normal non expanded mode 5 4 Test Modes The PMDX 126 provides a method for stand alone motor testing and for adjusting the Gecko adjust trim pot These test mode generate internal step and direction signals without needing a PC connected The step pulses are generated by pressing the momentary contact push button switch SW 2 labeled PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 14 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above Test The test mode will also operate when the PMDX 126 connected to a PC If a PC is connected to the PMDX 126 while it is in test mode the PMDX 126 will ignore all incoming signals from the PC including the charge pump for as long as test mode is active W hile in test mode all PMDX 126 output signals are forced to a low zero volts and all relays are de energized except for the two signals that are being driven as step and direction All inputs are passed through the PMDX to the PC
53. rallel port connectors Table 19 Secondary Control Output Connector Pin O ut J5 PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 26 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 10 3 Primary Control Output Connector J6 Pin Number Label Description PC 5V 5V power supply referenced to the PC gnd on pin 6 O utput from parallel port 1 pin 1 4 16 Output from parallel port 1 pin16 6 PCgd Ground referencedto the ground on the PC parallel port connectors Table 20 Primary Control Output Connector Pin Out J6 10 4 External LED Connector J7 Pin Number Label Description V raw Connection for external outputs enabled LED Connection for external step activity LED 4 EStp Connection for external E Stop LED Connection for external Power On 6 PCgnd Ground referenced to the ground on the PC parallel port connectors Table 21 Primary Control Output Connector Pin Out J7 10 5 AC Power Connector J8 WARNING Setthe voltage selector switch to the appropriate voltage range BEFO RE applying power to the PM DX 126 Pin Description AC voltage NOTE There is no safety ground connection AC voltage required for the PMDX 126 Table 22 Power Supply Connector Pin Out J8
54. rinter cable NOTE 2 The pin out on J17 matches the industry standard for D B 25 signals on a ribbon cable 10 13 Option Card Connector J18 The option card connector is used for PMD X option boards such as the PMD X 107 The pin out is proprietary PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 30 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 10 14 Alternate Step Direction Connector J19 This connector provides a method to access parallel port 1 pins 2 through 9 and parallel port 2 pins 1 14 16 and 17 other than by using discrete wires on connectors J1 J2 J3 JA and J5 J19 is a 26 pin ribbon cable header and allows the use of a 26 pin ribbon cable to connect the PMD X 126 to any multi axis motor driver that has a 26 pin header on it Specifically this connector can be used to connect the PMD X 126 to a PMD X 134 4 axis Gecko Motherboard or two one or two PMDX 133 boards 3 axis D aisy C hainable Gecko Motherboard Table 30 shows the pin out of this connector Note that all signals on this connector are buffered by the PMD X 126 Additionally there is an option to connect PC 5V to J19 pin 26 See jumper JP4 in section 4 0 for more information JI9Pin DB25 Equivalent Numbers Pin Numbers PMDX 126 Signal Comment Parallel Port 2 pin 1 Possible 5th axis step signal Parallel Port 1 pin 2 ae Paralle
55. s LED ignores this signal It may still be used as a step signal as described above it just won t have its activity shown on the Steps LED Table 12 Parallel Port Pins That Affect the Steps LED Status LED This LED is off when the PMD X 126 is operating normally The LED flashes an error code when the PMD X 126 detects an error condition see section 9 1 The LED is on solid whenever the Test button is pressed Outputs Enabled LED This LED is on when the PMD X 126 s outputs are enabled and is off when the outputs are disabled E Stop LED The E Stop LED is on when the PMD X 126 is asserting the E Stop signal to the PC on pin 10 of both parallel ports 1 and 2 Note that this is not necessarily an indicator that the E Stop input is open The E Stop LED will be on when the Fault input is grounded or when the PMD X 126 is in Test mode see section 5 4 The E Stop LED and E Stop signal to the PC will also be asserted for approximately 1 second when the PMD X 126 detects a Gecko Error signal see section 6 4 Relay LEDs Each relay has an LED associated with it This LED is on when the relay is energized and off when the relay is de energized Input LEDs Each input signal except E Stop Fault and Gecko Error have an LED adjacent to the connector terminal The LED is on then the input is being pulled low to ground and is off when the input is open or pulled to a voltage above 3 0 volts Output LED
56. s Each output signal has an LED adjacent to the connector terminal The LED is on when the output is driven to alogic 1 5V The LED is off when the output is driven low 0V PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 24 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 9 1 Status LED Error Codes W hen the PMD X 126 encounters a problem it uses the Status LED to display an error code The error code is a repeating pattern of 3 flashes a short pause then some number of flashes the error code followed by a longer pause Then the entire sequence repeats Table 13 lists the possible flash patterns Table 13 Status LED Flash Patterns NOTE f you encounter an internal error flash code you should power off the PMDX 126 and then power it back on Pressing the Test button is not sufficient If you encounter the internal error again contact PMDX 9 2 External LED Connector J7 Connector J7 provides a Charge Pump OK really outputs enabled Step Activity EStop and Power signals that can be connected to external LEDs for remote status indicators These signals have current limiting resistors so all that is needed is to connect an LED from the signal to the GN D pin on connector J7 The LED should be a high efficiency model that can generate sufficient light when driven by approx 6 mA 10 0 Con
57. talled in J18 for example from a PMDX 107 Isolated Speed Control No jumper Don t care Relay K 1 is de energized disabled DIP Switch Config 7 has no effect installed on relay K1 Table 3 Relay K1 DIP Switch amp Jumper Settings Jumper JP2 DIP Switch Setting Config 8 Relay K2 Function Pin 14 Don t care DIP Switch Config 8 has no effect on relay K2 Relay K2 is controlled from parallel port 1 pin 14 multimode e If the PMDX 126 is in Expanded I O or Expanded Output mode see section 5 3 then relay K2 is controlled via expanded I O data e If the PMD X 126 is in any Test mode see section 5 4 then relay K2 will be de energized e Otherwise K2 is controlled via parallel port 2 pin 14 N ote that if you do not have a 2nd parallel port connected to the PMD X 126 the relay will remain de energized multimode Relay K2 controlled by O utputs Enabled signal The relay is energized when the PMD X 126 s outputs are enabled the O utputs Enabled LED is on and the relay is de energized when the outputs are disabled the Outputs Enabled LED is off This allows the relay to be used as a machine enable relay No jumper Don tcare Relay K2 is de energized disabled DIP Switch Config 8 has no effect installed on relay K2 Table 4 Relay K2 DIP Switch amp Jumper Settings 4 0 Jumper Settings The PMDX 126 contains four jumpers as described below Pins Label p
58. that your CN C software can drive each motor e Test any other output signals coolant pump spindle on off e Test any input signals limit switches spindle sensors etc 2 11 Test Your Configuration with the Charge Pump If you will be using the charge pump feature see section 8 0 then enable that in your CNC software and change the PMDX 126 s DIP switches to Run N ormal with C harge Pump see sections 3 1 and 5 2 2 Press the Test button or power the PMDX 126 off and back on to activate the Run Normal with Charge Pump mode Verify that the O utputs Enabled LED turns on when your CNC software is enabled and that it turns off when the CN C software is disabled PMDX 126 Manual 11 doc 2010 Practical Micro Design Inc Page 7 of 34 9 August 2011 All Rights Reserved PMDX 126 User s Manual PCB Revision PCB 485A Document Revision 1 1 Serial N umbers 28289 and above 2 12 Test Your Configuration in Expanded Mode If you will be using one of the PMDX 126 s expanded modes Expanded I O M ode Expanded Output M ode or Exapnded Input M ode download the PMD X 126 Mach3 plug in and documentation Follow the instructions to install and configure the plug in and Mach3 See section 5 3 for more information 3 0 DIP Switch Settings The PMDX 126 contains 8 DIP switches labeled Config 1 through Config 8 These switches along with the two jumpers see section 4 0 determine the operating characteristics of the PMDX 12
59. the 26 pin Port 1 and Port 2 connectors Please refer to the SmoothStepper User s Manual for more information Y ou cannot use this jumper to provide power to the PMDX 126 from the SmoothStepper The PMDX 126 must be powered from the AC mains 2 3 Off N othing is connected to J16 and J17 pin 26 If a SmoothStepper is connected to the PMDX 126 the SmoothStepper must be powered from its USB connector or an external power supply It will NOT be powered from the PMD X 126 Table 7 Jumper JP3 Settings SmoothStepper Power Pins Label FunctionofJPA O PC 45V 5V relative to PC ground is connected to J19 pin 26 N o connection to J19 pin 26 Table 8 Jumper JP4 Settings 5V Power to Connector J19 pin 26 5 0 Operation Modes 5 1 Changing Modes The PMDX 126 changes operating modes only upon power up or when the Test push button is pressed and released If the Status LED is on or flashing indicating some error or fault condition then pressing the push button attempts to clear the error rather than changing modes In order to change modes the Status LED must be off unless you are in Test mode or you can power the board off and back on 5 2 Normal Modes In either of the two normal modes the PMDX 126 may be connected to one or two parallel ports or to a SmoothStepper The PMDX 126 provides buffering but not optical isolation for all outputs signals and optical isolation for all in
60. the PC parallel port connectors Table 15 Data Bus Connector Pin Out J1 Pin Number Label Description 1 PC 5V__ 5V power supply referenced to the PCgndonpin4 2 6 Buffered signal from pin 6 of the parallel port 1 3 7 Buffered signal from pin 7 of the parallel port 1 4 PCgnd Ground referenced to the ground on the PC parallel port connectors Table 16 Data Bus Connector Pin Out J2 Pin Number Label Description 1 PC 5V__ 5V power supply referenced to the PCgndonpin4 2 4 Buffered signal from pin 4 of the parallel port 1 3 5 Buffered signal from pin 5 of the parallel port 1 4 Peod Ground referenced to the ground on the PC parallel port connectors Table 17 Data Bus Connector Pin Out J3 Pin Number Label Description 4 PCgnd Ground referenced to the ground on the PC parallel port connectors Table 18 Data Bus Connector Pin Out J4 10 2 Secondary Control Output Connector J5 Pin Number Label Description O 3 B Output from parallel port 2 pin 14 or expanded mode bit stream 4 C Output from parallel port 2 pin 16 or expanded mode bit stream 5 D Output from parallel port 2 pin 17 or expanded mode bit stream 6 PCgnd Ground referenced to the ground on the PC pa
61. the PMD X 106 with a PMDX 126 in Expanded Output M ode you must connect the PMD X 106 using discrete wires and configure the spindle PW M and direction signals to use pins 1 to 9 or 14 5 3 3 Expanded Input Mode Expanded Input M ode provides an additional 4 input signals like Expanded I O mode without the slow update output signals on connectors J5 and J6 Expanded Input M ode is not intended for use with dual parallel ports or with a SmoothStepper In Expanded Input M ode using the Mach3 PMD X 126 plug in the PMDX 126 provides the following signals via parallel port 1 Please refer to the PMD X 126 Mach3 plug in documentation for a full description of the available signals e 12 full speed output signals on J1 J2 J3 J4 and J6 pin 17 must be the charge pump signal see the plug in documentation for more information e Output signals on J5 not available except though the 2nd parallel port connector e 2 relays controlled either from parallel port 1 pins 1 and 14 parallel port 2 pin 14 or from the expansion connector and the outputs enabled signal see section 4 0 for more information e 1 E Stop input signal on parallel port pin 10 e 8input signals from J11 and J12 multiplexed onto parallel port pins 11 12 13 and 15 Use of Expanded Input M ode with Mach3 requires the PMD X 126 Mach3 plug in which may be downloaded from our web site at http www pmdx com see the Support page for the downloads page Please refe
62. the PMD X 126 In test mode the switches determine on which pair of pins the step and direction signals appear see section 5 4 for more information These switches are read only at power up or when the Test push button is pressed This means that if you change the settings on these switches you must power the PMD X 126 off and back on or press amp release the Test push button in order for the change to take effect Config 6 Config5 Config4 Ifin any Run Mode N o auxiliary features Touch probe merged inputs see section 5 6 Closed Open Closed Enable pulse stretching on input pin 15 J12 pin 9 for active low pulses See section 5 5 Closed Open Open Enable pulse stretching on input pin 15 J12 pin 9 for active high pulses See section 5 5 Reserved for future option cards with feedback signals Open Closed Open Jumbo Mode 5 or 6 axis from one parallel port with touch probe merged inputs See section 5 7 Open O pen Closed Jumbo Mode 5 or 6 axis from one parallel port without touch probe merged inputs See section 5 7 Do not use will assert EStop and flash an error code Table 2 Test Mode Step Dir Select DIP Switch Settings 3 3 Relay Mode Switches For all operational modes except the two test modes the DIP switches labeled Config 7 and Config 8 determine which signals control the two relays when the relay jumpers are set to multimode see section 4 0 Note that when the PMDX 126 is in o
63. top signal not be asserted before it will start generating the charge pump signal 9 0 LEDs Steps LED Flickers when activity is detected on pins that may be used for step signals or when Test Mode is generating step pulses see section 5 4 The PMDX 126 does not know which pins are being used as step signals which are used as direction signals or which are used for some other function The PMDX 126 assumes that all of the signals listed in Table 12 could possibly be step signals and monitors them for activity The PMDX 126 also does not know the polarity of the step signals so it looks for a rising edge on any of the signals listed in the table and calls that step activity This has the side effect that changing a direction signal may cause the Steps LED to flicker Likewise any activity on parallel port 1 pin 1 or parallel port 2 pins 1 or 16 will cause the Steps LED to flicker Port 1 Pin 1 Can be a 5th axis with pin 14 as the direction signal Port 1 Pins 2to 9 Usual pins for up to 4 axis X Y Z and A of step and direction Port 2 Pin 1 Can be a 5th or 6th axis with port 2 pin 14 as the direction signal when using 2 parallel ports into the PMDX 126 Port 2 Pin 16 e For boards marked as Revision A2 or higher this can be a 5th of 6th axis with port 2 pin 17 as the direction signal when in one of the normal modes and using 2 parallel ports into the PMD X 126 e For boards marked as Revision A1 the Step
64. ulse stretch active low mode operates with the following constraints O perates on the Pin 15 input only J12 pin 9 Assumes the signal from the sensor is active high driven to 5V or 24V or open floating Your CNC software must be configured with the pin 15 input as active high Stretches the active high pulse to provide a minimum 100us wide pulse to the PC The active rising edge of the PC signal is aligned with the signal from the sensor The inactive falling edge is delayed going to the PC 5 6 Touch Probe Merged Inputs Mode Touch Probe Merged Inputs mode takes two input signals and merges combines them into one active high signal going into the PC s parallel port This mode can be used with systems that have two touch probes or a touch plate and a digitizing probe The PMDX 126 the outputs on parallel port 1 pin 15 the logical O R of the two signals as shown below Port 1 pin 15 into PC is high if J12 pin 9 is GND or 24V see note below OR J11 pin 9 is 5V or floating NOTE As described in section 6 1 the PMDX 126 interprets 24V on its input usually from a PN P sensor the same as having its input grounded For example consider a system that has both a touch plate and a digitizing probe Touch plates are usually configured to ground the input when the tip hits the touch plate Therefore the signal from the touch plate should be connected to J12 pin 9 labeled 15 Digitizing probes usually operate

PMDX-126 User`s Manual, Revision 1.1

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