ADLINK PCI-8258 - Manual (Page 15)

Introduction 1
PCI-8254 / PCI-8258
1 Introduction
The PCI-8254/PCI-8258, is a fully in-house developed DSP-based
advanced motion control card from ADLINK. It supports 4/8 axis
pulse type or Analog type signal commands, provides Open-loop
and closed-loop circuit control options, and supports
position/speed/torque commands for several different servo
drivers.
The PCI-8254/PCI-8258 exchanges data with operating system
through high speed PCI bus including motion control command,
feedback data, parameter, etc. Used with the ADLINK exclusive
Softmove kernel, it offers scores of move control functions
including T/S speed profile planning, point-to-point movement,
multi-dimension interpolation, and master/slave motion.
To enable absolute real time motion control, ADLINK's multi-tasks
download function helps users to program with AMC code
(ADLINK Motion Code), a programming language similar to C, for
downloading to PCI-8254/58 embedded processors for execution.
It supports up to eight different programs for concurrent download
and execution.
With up to 20MHz high speed encoder feedback support and 4/8
axes independent hardware PID control plus Feed-forward gain
design, it ensures precision control and reduce following errors in
tandem with high speed motion feedback. The programmable
servo update rate allows excellent control performance because
different PID parameter adjustments can be made for individual
applications.
The PCI-8254/58, see Figure 1 below for its system functions,
uses one digital signal processor (DSP) from Texas Instrument
(TI) as its main computing unit and integrates high speed large
volume Field Programmable Gate Array (FPGA) to provide 4/8
independent PID control, high speed encoder output unit, 2/4 high
speed position compare and trigger output, move & general
purposed I/O and logic control. It separates isolation circuit into
exclusive terminal board DIN-825-GP4 to prevent the burning out
of PCI-8254/58 from incorrect wiring. Thanks to full range of
flexing resistant wires from ADLINK, it connects with market
available popular servo drives easily.