Mitsubishi Electronics MR-J2S- A instruction manual Yes AL.E5 warning Signal is not turned OFF

15. ABSOLUTE POSITION DETECTION SYSTEM

3)ABS transfer mode finish-time time-out check

If the ABS transfer mode signal is not turned OFF within 5s after the last ready to send signal (19th signal for ABS data transmission) is turned ON, it is regarded as the transmission error and the ABS time-out warning (AL.E5) is output.

ON

ABS transfer mode

OFF

ON

ABS request

OFF

ON

Send data ready

OFF

Yes

AL.E5 warning

No

5s

Signal is not turned OFF

1 2 3 4 18 19

1 2 3 4 18 19

(b)Check sum error

If the check sum error occurs, the programmable controller should retry transmission of the ABS data.

Using the ladder check program, turn OFF the ABS transfer mode (ABSM) and servo-on (SON) signals once. Turn them ON again after an OFF time of longer than 20 ms.

If the ABS data transmission fails to end normally even after retry, regard this situation as an ABS check sum error and execute error processing.

The start command should be interlocked with the ABS data ready signal to disable positioning operation when an check sum error occurs.

20ms

or more

ON

Servo-on

OFF

ON

ABS transfer mode

OFF

ON

ABS request

OFF

ON

Send data ready

OFF

Yes

ABS check sum error

No

20ms

or more

Retry 1

20ms

or more

Retry 2

Retry 3

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