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14. ABSOLUTE POSITION DETECTION SYSTEM
(2) Transmission error
(a) Time-out warning(AL.E5)
In the ABS transfer mode, the time-out processing shown below is executed at the servo. If a time-out
error occurs, an ABS time-out warning (AL.E5) is output.
The ABS time-out warning (AL.E5) is cleared when the ABS transfer mode (ABSM) changes from OFF
to ON.
1) ABS request OFF-time time-out check (applied to 32-bit ABS data in 2-bit units checksum)
If the ABS request signal is not turned ON by the programmable PC or PLC...etc within 5s after the
ABS transmission data ready (ABST) is turned ON, this is regarded as a transmission error and the
ABS time-out warning (AL.E5) is output.
OFF
ON
OFF
ON
OFF
ON
5s
ABS transfer mode
ABS request
ABS transmission
data ready
AL.E5 warning
Signal is not turned ON
No
Yes
2) ABS request ON-time time-out check (applied to 32-bit ABS data in 2-bit units checksum)
If the ABS request signal is not turned OFF by the programmable PC or PLC...etc within 5s after the
ABS transmission data ready (ABST) is turned OFF, this is regarded as the transmission error and
the ABS time-out warning (AL.E5) is output.
OFF
ON
OFF
ON
OFF
ON
5s
ABS transfer mode
ABS request
ABS transmission
data ready
AL.E5 warning
Signal is not turned OFF
No
Yes
(ABSM) (Pin 17)
(ABSR) (Pin 18)
(ABST) (Pin 25)
(ABSM) (Pin 17)
(ABSR) (Pin 18)
(ABST) (Pin 25)
