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System Safety
Motion I/O
© National Instruments Corporation
Stepper outputs
Max pulse rate................................. 8 MHz (full, half, and microstep)
Min pulse width .............................. 60 ns at 8 MHz
Step output mode ............................ Step and direction or CW/CCW
Voltage range .................................. 0 to 5 V
Output low voltage .................. < 0.6 V at 64 mA sink
Output high voltage ................. Open collector with built-in
Polarity............................................ Programmable, active-high or
Watchdog timer function ....................... Resets board to startup state
Watchdog timeout .......................... 63 ms
Shutdown input
Voltage range .................................. 0 to 12 V
Input low voltage ..................... 0.8 V
Input high voltage .................... 2 V
Control ............................................ Disable all axes and command
Encoder inputs........................................ Quadrature, incremental,
Max count rate ................................ 20 MHz
Voltage range .................................. 0 to 12 V
Input low voltage ..................... 0.8 V
Input high voltage .................... 2 V
Min index pulse width .................... 60 ns
3.3 k pull-up to +5 V
active-low
outputs
single-ended
A-3
Appendix A
Specifications
7344 Hardware User Manual
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