
B-63173EN-1/01-15
9/17
EDIT
DATE DESIG. DESCRIPTION
FANUC Power Mate i-MODEL H
Enhancement of Electronic CAM
Function Specifications
DRAW.NO. CUST.
SHEET
01
00.08.07 New design
TITLE
Switch a CAM shaft from “external axis” to “imaginary axis”
A CAM shaft can be switched from “external axis (external synchronization)” to “imaginary axis
(internal synchronization)” during electronic CAM operation. It can be continued the CAM follower’s
motion after the external axis will stop. CAM shaft changing signal ECMCHG (G239#2 is prepared
for this purpose. If this signal is turned to “1”, the velocity of the CAM shaft (external axis) is kept
at a point of time and the internal pulses starts outputting at the same velocity as before. The internal
pulses are outputting while this signal is “1”. The internal synchronization in which the internal
pulses are treated as the CAM shaft is started.
The internal pulses will stop outputting when electronic CAM operation is finished and CAM shaft
changing signal ECMCHG (G239#2) is turned to “0”.
Notice
1 Be sure to finish electronic CAM operation before CAM shaft changing signal is turned to “0”.
2 Internal pulses is kept outputting until CAM shaft changing signal is turned to “0” or electronic
CAM operation is finished.
3 In case that a servo axis is assigned to a CAM shaft, CAM shaft changing signal cannot be used.
If used, a servo axis moves like a imaginary axis.
Note
1 Feedrate override can not be applied to internal pulses.
2 It is not possible to change from internal synchronization to external synchronization.