Omron OMNUC FND Series User Manual page 203

Application
Display Error detection
A.L38 Overrun
A.L40 Encoder
disconnection
A.L41 Encoder
communications
error
A.L42 Absolute encoder
backup error
A.L43 Absolute encoder
checksum error
A.L44 Absolute encoder
battery error
A.L45 Absolute encoder
absolute value
error
A.L46 Absolute encoder
over speed
A.L47 Encoder data not
transmitted
A.L48 Encoder
initialization error
A.L50 BCD data error
A.L51 Present position
unknown
A.L52 PTP data not set
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Meaning of code and probable cause
function
The limit input signal in the direction of
movement turned OFF.
An encoder disconnection or short-circuit
was detected.
There was an error in the encoder's
S-phase data (or A-phase when an absolute
encoder is connected).
The absolute encoder's backup voltage
dropped.
There was an error in the absolute
encoder's memory data check.
The absolute encoder's backup battery
voltage dropped.
There was an error in the absolute
encoder's sensor check.
The speed exceeded 400 r/min when
multiple rotation data was transmitted.
The encoder's S-phase data was not
transmitted within the prescribed time.
The encoders reception circuitry
malfunctioned.
The input data for P.IN0 to 7 is not BCD.
START, TEACH, or ORIGIN TEACH was
executed when the origin was not
established.
A point number was selected for which the
PTP data was not set.
Chapter 4
Motor current
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo OFF
Servo-lock
Servo-lock
Servo-lock
4-11