Yaskawa Sigma II Series DC Power Input SGMAJ - Manual (Page 207)

8 Operation
8.4.6 Absolute Encoder Reception Sequence
8-34
(4) Transferring Alarm Contents
When an absolute encoder is used, SEN signals can be utilized to transfer the alarm detection contents from PAO
outputs to the host controller as serial data.
For alarm list, refer to 10.1.1 Alarm Display Table.
L
H
Error detection
Overspeed
or
Incremental pulse ALM81 CR
Serial Data
SEN Signal
Digital Operator
Display
PAO
Serial Data