YASKAWA SGMJV User Manual page 180

(3) Rotational Data Specifications
The number of revolutions is output from PAO signal.
Data Transfer
Method
Baud rate
Start bits
Stop bits
Parity
Character coder
Data format
(4) Transferring Alarm Contents
If an absolute encoder is used, the contents of alarms detected by the SERVOPACK can be transmitted in
serial data to the host controller from the PAO output when the SEN signal changes to low level from high
level.
Note: SEN signal cannot be received during Servo ON.
Output example of alarm contents are as shown below.
SEN Signal
Digital Operator
Display
PAO
Serial Data
Start-stop Synchronization (ASYNC)
9600 bps
1 bit
1 bit
Even
ASCII 7-bit coder
8 characters, as shown below.
"P"
0 0 0 0 0 1 0 1 0 1
Data
Start bit
Note:
• Data is "P+00000" (CR) or "P-00000" (CR) when the number of revolutions is zero.
• The revolution range is "+32767" to "-32768." When this range is exceeded, the data
changes from "+32767" to "-32678" or from "-32678" to "+32767." When changing multi-
turn limit, the range changes. For details, refer to 5.9.7 Multiturn Limit Setting.
Error detection
High level
or
Incremental pulse
"0" to "9"
Rotational data
"+" or " - "
in five digits
Stop bit
Even parity
Overspeed
Serial Data
Enlarged view
Serial Data Format
" " A " " L " " M " " 5 " " 1
upper 2 digits
5.9 Absolute Encoders
"CR"
Low level
CR
" " " . CR "
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