©
National Instruments Corporation
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NI PCI-7342 Hardware User Manual
A
Specifications
This appendix lists the hardware and software performance specifications
for the PCI-7342 controller. Hardware specifications are typical at 25 °C,
unless otherwise stated.
Servo Performance
PID update rate range............................. 62.5 to 500 µs/sample
Maximum PID update rate.............. 62.5 µs/axis
2-axis PID update rate..................... 125 µs total
Trajectory update rate ............................ Same as PID update rate
Multi-axis synchronization .................... < 1 update sample
Position accuracy
Encoder feedback............................ ±1 quadrature count
Analog feedback ............................. ±1 LSB
Double-buffered trajectory parameters
Absolute position range .................. ±2
31
counts
Maximum relative move size.......... ±2
31
counts
Velocity range................................. 1 to ±20,000,000 counts/s
RPM range ...................................... 10
–5
to 10
6
revolutions/minute
Acceleration/deceleration ............... 4,000 to 128,000,000 counts/s
2
RPS/s range..................................... 10
–1
to 10
8
revolutions/s
2
S-Curve time range ......................... 1 to 32,767 samples
Following error range ..................... 0 to 32,767 counts
Gear ratio ........................................ ±32,767:1 to 1:32,767
Servo control loop modes ...................... PID, PIVff, S-Curve, Dual Loop
PID (Kp, Ki, and Kd) gains ............ 0 to 32,767
Integration limit (Ilim) .................... 0 to 32,767
