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PMDX

an affiliate of Practical Micro Design, Inc.

Products for CNC and motion control applications since 1998.
Design, manufacturing, and support based in the USA.

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SmartBOB Features Comparison Table

Features  PMDX-411 PMDX-412 PMDX-416 PMDX-424 PMDX-410 PMDX-422
production status active active active active legacy* legacy*
host connection USB-A plug pigtail USB-B jack USB-B jack USB-B jack, electrically isolated USB-B jack USB-B jack
signal connections on pluggable 0.150" screw terminal blocks  no, DB-25 male only yes yes yes only for encoder yes
ribbon header for remote DB-25 no, direct mounted DB-25 male only yes yes, for motor drivers only yes, for motor drivers only yes yes
Motor outputs, 16 mA buffered for step and direction 4 axes 4 axes 4 axes 4 axes with support for 5th motor in tandem mode 4 axes 4 axes
Selectable "common" for step and direction signals on terminal blocks no, always uses ground common on DB-25 male yes, selectable via plug-in software  yes, selectable via plug-in software  yes, selectable via plug-in software  yes, via jumper yes, via jumper
  PMDX-411 PMDX-412 PMDX-416 PMDX-424 PMDX-410 PMDX-422
Status inputs, including E-Stop with support for contact closures, 5 volt logic signals, or NPN sensors 5 buffered  5 buffered and filtered  5 Opto-isolated  9 Opto-isolated, +12 unregulated power available for proximity sensors 5 buffered and filtered 5 buffered and filtered 
Aux or Encoder inputs, 3 buffered and filtered signals for one encoder with A, B, and Index, or 3 Aux signals none none buffered and filtered, +5 power available buffered and filtered, +5 power available buffered and filtered, +5 power available buffered and filtered, +5 power available 
Control signal outputs,16 mA buffered 5 volt logic level 
Control relay, SPDT 6 ampere 240 VAC relay with MOV to protect N/O contacts from inductive loads none 1 none
PMDX-407 spindle control support no yes yes yes  yes yes
  PMDX-411 PMDX-412 PMDX-416 PMDX-424 PMDX-410 PMDX-422
LED's 2 status (externally visible) power, outputs enabled, steps activity, 2 status (externally visible) power, outputs enabled, relay, steps activity, 2 status (externally visible) power, outputs enabled, relay, steps activity, 2 status (externally visible) power, outputs enabled, 2 status (externally visible) power, outputs enabled, 2 status (externally visible)
PWM output available yes yes yes yes yes yes
Charge Pump Support yes yes yes not applicable yes yes
other features entire unit packaged inside a DB-25 male connector shell  comes with dress plate and board brackets for direct mount behind a panel comes with dress plate and board brackets for direct mount behind a panel, /Fault input ribbon header for future inputs motherboard, support for PMDX-179 external status panel, /Fault input n/a n/a
Power requirements USB powered USB powered USB powered 100 to 250 VAC, 50/60 Hz or 24 VDC option USB powered USB powered

*Legacy products are still supported and will continue to get plug-in updates because they share the same plug-in as active products.