Checks In The Auto Mode - Mitsubishi MELSEC-F FX-1GM Handy Manual

6.4.2
Checks in the AUTO mode
MEM-E and ERROR indicators
When the manual input to the PGU is turned OFF (AUTO mode), the READY indicator normally goes
ON.
When the START button is pressed in the above state, program execution is started.
If any error occurs during the operation, the MEM-E is turned ON, or the ERROR display flickers
which stops the motor.
In such a case, turn on the manual input
to the PGU, which will allow the cause of the error to be
investigated by using the TP.
Error codes CE1 to CE20 apply here and are explained on pages 108 to
11
0.
(See also page 92.)
The cause of this trouble is mainly due to misuse of program instructions.
For instance, if blocks 8 or 9 are designated when only programs 0 to 7 exist, the designated BLK
does not exist and this can also cause this error.
The TP is also used for resetting an error. The STOP button of the PGU, after switching from AUTO
to MANUAL, or BFM#1 b4 of a command from the programmable controller can also be used for
resetting an error.
I/O
indicators
Check the input wiring of the PGU by making sure that the input indicators go ON corresponding to
the ON/OFF states of the appropriate input switches.
Also, make sure there are no contact faults in the input switches.
If the load does not turn ON/OFF according to the output indicator, check the output wiring.
Input LED indicators
7
Pulse output/general-purpose LED indicators
Pulse output display
The pulse output is displayed
by
LED,
M,
N.
Since it flickers rapidly, it will appear to be turned ON dimly during normal operations.
During acceleration/deceleration, however, the flickering may be briefly visible.
-94-