Galil DMC-1800 user manual Introduction, DMC-1700/1800 Overview

Chapter 1 Overview

Introduction

The DMC-1700 series motion control cards install directly into the ISA bus while the DMC-1800 series motion controllers install directly into a PCI slot. These controller series offers many enhanced features including high- speed communications, non-volatile program memory, faster encoder speeds, and improved cabling for EMI reduction.

The DMC-1700/1800 provides two channels for high speed communication. Both controllers use a high speed main FIFO for sending and receiving commands. Additionally, the DMC-1700 provides a DMA channel which places a data record directly into PC memory or a secondary polling FIFO for instant access to controller status and parameters. The DMC-1800 provides either Dual Port RAM (DPRAM) or a secondary polling FIFO for instant access to controller status and parameters. The controllers allow for high-speed servo control up to 12 million encoder counts/sec and step motor control up to 3 million steps per second. Sample rates as low as 62.5μsec per axis are available.

A 4 meg Flash EEPROM provides non-volatile memory for storing application programs, parameters, arrays, and firmware. New firmware revisions are easily upgraded in the field without removing the controller from the PC.

The DMC-1700 is available with up to eight axes on a single ISA card. The DMC-1710, 1720, 1730, 1740 one thru four axes controllers are on a single 10.25” x 4.8” card and the DMC-1750, 1760, 1770, 1780 five thru eight axes controllers are on a single 13.25” x 4.8” card.

The DMC-1800 is available from one to eight axes on a single PCI card. The DMC-1810, 1820, 1830, 1840, covering from one to four axes, are on a single 8.2” x 4.2” card and the DMC-1850, 1860, 1870, 1880 five thru eight axes controllers are on a single 12.28” x 4.2” card.

Designed to solve complex motion problems, the DMC-1700/1800 can be used for applications involving jogging, point-to-point positioning, vector positioning, electronic gearing, multiple move sequences and contouring. The controller eliminates jerk by programmable acceleration and deceleration with profile smoothing. For smooth following of complex contours, the DMC-1700/1800 provides continuous vector feed of an infinite number of linear and arc segments. The controller also features electronic gearing with multiple master axes as well as gantry mode operation.

For synchronization with outside events, the DMC-1700 and DMC-1800 provide uncommitted I/O, including 8 digital inputs (24 inputs for DMC-1750 thru DMC-1780 and DMC-1850 thru DMC-1880), 8 digital outputs (16 outputs for DMC-1750 thru DMC-1780 and DMC-1850 thru DMC-1880), and 8 analog inputs for interface to joysticks, sensors, and pressure transducers. The DMC-1718, 1728, 1738, and 1748 controllers are also available for an additional 64 I/O. Dedicated optoisolated inputs are provided on all DMC-1700/1800 controllers for forward and reverse limits, abort, home, and definable input interrupts. The DMC-1800 has plug and play capabilities to ease the setup process. Commands can be sent in either Binary or ASCII. Additional software is available to autotune, view trajectories on a PC screen, translate CAD.DXF files into motion, and create powerful, application-specific operator interfaces with Visual Basic. Drivers for WIN98SE, ME, NT4.0, 2000 and XP are available.

DMC-1700/1800 Chapter 1 Overview • 1