Mitsubishi Electric MELSERVO MR-J2S- A Instruction Manual page 371

15. ABSOLUTE POSITION DETECTION SYSTEM
(2) ABS communication error
(a) The OFF period of the send data ready signal output from the servo amplifier is checked.
If the OFF period is 1s or longer, this is regarded as a transfer fault and the ABS communication
error is generated.
The ABS communication error occurs if the ABS time-out warning (AL.E5) is generated at the
servo amplifier due to an ABS request ON time time-out.
ABS transfer mode
ABS request
Send data ready
ABS communication
error
(b) The time required for the ABS transfer mode signal to go OFF after it has been turned ON (ABS
transfer time) is checked.
If the ABS transfer time is longer than 5s, this is communication error occurs if the ABS time-out
warning (AL.E5) is generated at the servo amplifier due to an ABS transfer mode completion time
time-out.
ABS transfer mode
ABS request
Send data ready
ABS communication
error
ON
OFF
ON
OFF
ON
OFF
YES
NO
ON
OFF
1
ON
OFF
ON
1
OFF
YES
NO
1s
The signal does not come ON
5s
The signal does not go OFF
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2 3 4
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