Advantech PCI-1241, User Manual

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PCI-1241/1242 User Manual 78
Appendix C Home Function
C.1 How to Read the Home Velocity Profile
Since the homing process is quite complex, PCI-1241/1242/1261 pro-
vides a ‘Home Pattern Graph’ for each mode to give users a clear concept
about how the home function proceeds.
In the Home velocity profile, there are three types of sensor inputs that
can be found, and they are all high-active. “HOME” represents the status
of the home sensor, and the raising edge means the home sensor was trig-
gered. “LMT” means limit switch, and the raising edge means the limit
switch was activated. “ECZ” represents the index signal of the encoder.
The pattern in each case shows the velocity profile of the motor. It starts
from a solid dot, and the arrow represents the direction of movement,
which then ends up at a hollow dot. There are only two movement speeds
that can be defined in the homing process. One is the start up speed FL,
and the other is the maximum speed FH. For velocity, the slants means
speed up or slow down.