ADLINK PCI-8158 - Manual (Page 11)

Introduction 1
1 Introduction
The PCI-8158 is an advanced & high-density 8-axis motion con-
troller card with a PCI interface. It can generate high frequency
pulses (6.55MHz) to drive stepper or servomotors. As a motion
controller, it can provide 8-axis linear and circular interpolation and
continuous interpolation for continuous velocity. Changing posi-
tion/speed on the fly is also available with a single axis operation.
Multiple PCI-8158 cards can be used in one system. Incremental
encoder interfaces on all eight axes provide the ability to correct
positioning errors generated by inaccurate mechanical transmis-
sions.
The PCI-8158 is a brand new design. The carrier board has 8-axis
pulse train output control channels. For additional functions, such
as high-speed triggering or distributed I/O control, users can add
on daughter boards depending on requirements. The board has a
position compare function. For line scan applications, a motion
controller is needed to generate high speed triggering pulse and
gain the high resolution images. In this situation, adopt a DB-8150
to extend the function on PCI-8158. Not only designed for motion
control, the sensors and actuator are also key elements in
machine automation. Usually, I/O is needed to integrate the sen-
sors and actuators in the controller. ADLINK also provides another
way to connect these devices – distributed I/O. A daughter board
can be used to achieve distributed I/O with the PCI-8158. This
configuration can save the wiring effort and physical controller
size, and is also cost-effective.
Figure 1-1 shows the functional block diagram of the PCI-8158
card. Motion control functions include trapezoidal and S-curve
acceleration/deceleration, linear and circular interpolation between
two axes and continuous motion positioning, and 13 home return
modes. All these functions and complex computations are per-
formed internally by the ASIC, saving CPU loading.
The PCI-8158 also offers three user-friendly functions.
1. Card Index Setting:
PCI-8158 can assign the card index with the DIP switch setting.
The value is within 0 to 15. It is useful for machine makers to