Features
• Available in 1-axis configuration.
• Supports 2 and 3-phase stepping motors.
• Programmable microstepping rate from 1 to 256 microsteps per full step.
• Motion profiles include S-curve, trapezoidal, and velocity contouring.
• Asymmetric acceleration and deceleration to custom program a trapezoidal motion profile.
• Velocity and acceleration changes on-the-fly for trapezoidal and velocity contouring profiles.
• Incremental encoder quadrature input and parallel input for absolute encoder or resolver
for on-the-fly motor stall detection.
• Serial (point-to-point or multi-drop) communications interface.
• Trace capabilities for system performance checks, maintenance, and diagnostics.
• Encoder rate of 5.0 Mcounts/sec allows use of fine resolution feedback devices for reading
motor position.
• 8-bit, 80kHz PWM* or 16-bit DAC motor output to amplifier.
• Advanced breakpoint capability allows precise sequencing of events.
• PLC-style programmable inputs and outputs, including a per-axis programmable input and output.
• 256 16-bit word I/O locations for user-defined peripherals.
• 8 general-purpose 10-bit analog inputs.
• Two directional limit switches, index input, and home indicator.
• Axis settled indicator and tracking window in addition to automatic motion error detection.
• Comprised of a 132-pin device (surface mount CMOS technology).
• Available in commercial and industrial temperature versions.
Pilot™ Motion Processor
For Microstepping Motion Control
MC3410
The Pilot MC3410 single-axis, single chip motion processor for microstepping
motion control is ideal for embedded systems in industrial control, automation,
and robotic applications. The chip is a 132-pin device, surface mount CMOS
technology and powered by 5 volts. The motion processor is driven by a host
microprocessor through an asynchronous bi-directional serial port, giving users
the ability to offload resource intensive motion control functions from the
application’s host.
The MC3410 outputs the PWM or DAC-compatible motor command signal needed
to directly drive the windings of a stepping motor. A programmable
microstepping rate can be specified to designate the desired number of
microsteps per full step, from 1 to 256. The chip operates in an open loop mode
where the motor command is driven from the output of the trajectory generator.
Optional encoder feedback provides on-the-fly motor stall detection and allows
the chip to detect when the stepping motor has lost steps during a motion. Trace
capabilities provide on-the-fly data storage for analyzing system performance
and performing maintenance and diagnostics.
With over 115 commands, PMD’s instructions set offers flexibility and versatility
to board designers and software application programmers. Instructions are used
to initialize and control the motion processor. User-selectable profiling modes
supported by the motion processor include S-curve, trapezoidal, and velocity con-
touring. The MC3410 accepts input parameters such as position, velocity, and
acceleration from the host and generates a corresponding trajectory.
The motion processor accepts feedback from an incremental encoder, up to 5
megacounts per second, or from an absolute encoder or resolver, up to 160
megacounts per second, to read the current position. 16-bit DAC or 8-bit, 80kHz
PWM*-compatible output signals are supported.
Multiple breakpoints offer precise sequencing and control of events by the appli-
cation program. PLC-style instructions are provided, which operate on inputs and
set outputs. The instructions use Event, Activity, and Signal registers. Input signals
include two limit switches (one for each direction of travel), home indicator, and a
general-purpose programmable input. One general-purpose programmable output
signal is also provided. Eight general-purpose analog (0-5 V) and 256 (16-bit
wide) general-purpose discrete inputs/outputs are available.
General Description