Product Announcement from Pro-Dex, Inc.
The PC78 is both a PC/104 motion controller that conforms to the PC/104 ISA bus standard, as well as a stand-alone controller via a RS232 communication port. The PC78 controls up to 4 axes of step and direction control or +/-10 V servo control. There are up to 12 general-purpose TTL I/O bits, 8 of which are user definable. Non-volatile memory macros store programs that can be executed via a command or programmed to an I/O bit signal. The step pulse is a TTL level 50% duty cycle square wave that supports velocities of 0 to 1,044,000 pulses per second.
The encoder feedback functionality supports quadrature encoders up to 12 MHz at a 4 times the encoder line resolution and is used as closed-loop feedback for the servo and stepper axes or as independent position feedback. The encoder feedback can provide slip and/or stall detection with programmable dead-band. Each axis includes dedicated +/- over-travel inputs, a home input, and an auxiliary output. The controller measures 3.5"x3.75" for compact applications. The PC78 was designed for expandability and incorporates an external board-to-board connector for custom daughter board development.