Instruction Manual

运动控制功能原理介绍 161
PCI-8254 / PCI-8258
圖 4-64：前 / 后位移量事件信号与运动关系图
Time
Velocity
Post-distance
Pre-distance
Time
Pre-distance event
(PRED)
Post-distance event
(POSTD)
Motion done event
(MDN)
preliminary