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6
6-15
6-5 Encoder Dividing Function
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Applied Functions
Encoder Output Direction Switching Selection (Pn012)
The corresponding scale for each output type is as follows.
External Scale Pulse Regeneration Function
Serial Absolute External Scale
Phase Z is output only after the control power supply for amplifier is turned ON and when it
crosses the zero absolute position of the external scale.Based on this position, phase Z is
output at the intervals of phase-A pulse that is set to Pn621.However, if Pn621 = 0, phase Z is
output only at the zero absolute position.
Serial Incremental External Scale
Phase Z is output without dividing the phase Z of the serial incremental external scale.In
addition, take note that there are differences as illustrated in the figure below depending on the
direction passing phase Z.
*1.Phase-Z position and its relationship with phases A and B vary depending on the scale.
*2.Phase Z is regenerated for 1 pulse.If the width is narrow, the output time can be extended by the External
Scale Phase Z Setting (Pn620).
Encoder
Output
Direction
Switching
Selection
(Pn012)
Output
source
Phase B
logic
For forward direction
operation
For reverse direction
operation
0
Encoder
Non-
reverse
2
External
scale
1
Encoder
Reverse
3
External
scale
Phase
A
Phase
B
Phase
A
Phase
B
Phase
A
Phase
B
Phase
A
Phase
B
Phase A
Phase B
Phase Z
Phase-Z position of external scale*
1
Operating direction
*
2
*
2
Operating direction