ADLINK PCI-8134A - Manual (Page 164)

Appendix A
• 156
Bouncing Problem in I/O Switch
Sometimes, end-limit and ORG switches are mechanical type. Although
there is a low pass filter in our input circuit, it could exist a bouncing
problem if the bouncing frequency is very low. PCI-8134 provides a
bouncing problem filter function, _8134_set_bounce_filter(AxisNo, Value).
The default value is 10. It means this card will check 10 times during the
switches changing their states. Every check is about 1ms~10ms depends
on PC’s performance. If users get any unknown error code(205) during
homing, try to increase this value for optimization. In each phase of homing,
PCI-8134 will place this checking after the phase is finished. There could
be a motion pause situation during homing if the setting value is too high.
That’s normal situation.
Ideal Case:
Switch
Active
Level
Time
Real Case:
Hardware Recognized ( Motion Stop Active)
Switch
Active
Level
User’s Software Check ( IO Status not active)
Time
Stable Time