Mitsubishi MELSEC-A Series Operating Manual page 138

6. HOW TO USE EACH FUNCTION
MELSGGA
(2) When there are no error histories
in
an A2A or A3ACPU
0
ISHIFTHOTHERS I
Select the OTHERS mode.
2 PLC CEBCK
3 PLC
SYSTBT
Select '2:PLC CHECK".
2 PRWRAM
CEECK
I
I I
Select
'1
:READ ERR. STEP'.
The ermr description is displayed.
(3) When there are error histories in an A2A or A3ACPU
0
ISHIFTHOTHERS I
1
PLC CEBCK
3
PLC SYSTEM
a
PRWRAM CEBCK
Select the OTHERS mode.
Select "2:PLC CHECK'
Select '1:READ ERR.STEP".
The newest error description is dis-
played.
The error description
of
error history
number 1 is displayed.
The error description
of
error history
number 2 is displayed.
(1) Section 7.2 gives details about error indications.
(2)
If
an A2A or A3ACPU has an error history, errors that occurred are
displayed in order from the latest error by pressing the [ ] key.
(3) The ACPU Programming Manual (Common Instructions) and the User's
Manual of the connected CPU give details about error codes and error
messages.
(4) Pressing the [END] or [CLEAR] key returns to the "2:PLC CHECK" menu.
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