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ABS Soft Reset will reset the current position to zero and store the Absolute
Encoder Soft Reset value (correction value for zero reset) in the machine
parameter area.
Note After ABS Soft Reset is completed, back up the system parameters using the
MC Support Software.
The ABS Soft Reset values can be displayed using the MC Support Software,
but they cannot be changed.
Do not perform ABS Soft Reset while system parameters are being down-
loaded. Otherwise, the Absolute Encoder Software Reset values will not be
stored properly.
7-8 Absolute Encoder Interface Specifications
This section describes the interface specifications used for OMRON U-series
Servodrivers with absolute encoder specifications.
A 12-bit absolute encoder outputs data from phase A, phase B, phase Z, and
ABS. It has the following system configuration.
Absolute Encoder
U-series Servodriver
Serial data
Divider
circuit
Phase A
Phase Z
Phase B
SEN
ABS
1, 2, 3... 1. Absolute data is output as serial data from phase A by changing the SEN
signal level from low to high.
2. Initial incremental pulses are output from phase A and phase B (90_ differ-
ential two-phase pulses).
3. Output operation (90_ differential two-phase pulses) similar to that of ordi-
nary incremental encoders is performed.
4. The number of revolutions is output as serial data from ABS.
The MC Unit does not receive ABS output.
12-bit Absolute Encoder
Output Specifications
Absolute Encoder Interface Specifications
Section 7-8
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