6-14
6-6 Fully-closed Control
OMNUC G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
6
Drive Profile
Electronic Gear Function (6091-01 Hex, 6091-02 Hex)
This function sets the position command for the position control part to the value that is
calculated by multiplying the command from the Host Controller with the electronic gear ratio.
 For details on the electronic gear function, refer to Electronic Gear Function on page 7-18
External Feedback Pulse Type Selection (3323 Hex, 3326 Hex)
Set the external encoder output type and direction.
Supported External Encoders
The corresponding external encoders for each output type are given in the following table.
*1 These are the feedback speeds from the external encoder at which Servo Drive can
respond. Check the external encoder operation manual for its maximum output frequency.
Index Name Description Setting range Unit
6091-01 hex
Motor revolutions Set the numerator of the
electronic gear ratio for the
command pulse input.
0 to
1,073,741,824
−
6091-02 hex
Shaft revolutions Set the denominator of the
electronic gear ratio for the
command pulse input.
1 to
1,073,741,824
−
Index Name Description Setting range Unit
3323 hex
External
Feedback Pulse
Type Selection
Select the type of the external encoder to be
used.
0: Encoder with 90° phase difference output
1: Incremental encoder with serial
communications
2: Absolute encoder with serial
communications
0 to 2 −
3326 hex
External
Feedback Pulse
Direction
Switching
If the count directions of the external encoder
feedback pulse and the encoder total
feedback pulses do not match, reverse the
external encoder feedback pulse direction in
this setting.
0: Not reversed, 1: Reversed
0 to 1 −
Set value of
3323 hex
External encoder
type
Corresponding external encoder
examples
Maximum input
frequency
*1
0
Encoder with 90°
phase difference
output
*2*3
External encoder with phase-AB outputs 0 to 4 Mpps (After x4)
1
Incremental encoder
with serial
communications
*3
Sony Manufacturing Systems
Corporation
SR75, SR85
0 to 400 Mpps
2
Absolute encoder
with serial
communications
*3
Mitutoyo Corporation
AT573, ST771A, ST773A
Sony Manufacturing Systems
Corporation
SR77, SR87
0 to 400 Mpps