8.
TROUBLESHOOTING
/MELSEC-A
8.
TROUBLESHOOTING
Errors may be detected by:
1)
the
AD71 CPU; or
2)
the
A6GPP during program development and debugging.
This section describes errors detected by the AD71 CPU, for other
errors
see
the SWOGP-AD71P Operating Manual.
8.1
Erron
Detected
by
AD71
The AD71 has various error check functions. When an error occurs,
an
error code
is
written to address 45
(X
axis)
and 345
(Y
axis)
in
the
buffer memory.
(1)
A
new
error will overwrite
the
previous one in the buffer mem-
ory.
(2) Error code
"0"
indicates no error.
(3)
Error reset
Errors are reset by writing
a
"1"
to buffer address 201.
(See
Section 6.3.2 (71, page 6-14.)
For resetting of errors using the AGGPP, refer
to
the
SWOGP-
AD71P Operating Manual.
(4) Error detection
XB
is
the error detection flag. Resetting
the
error also resets
XB.
Error codes
are
classified
as
shown in Table 8.1.
1
Error
code
I
Error
Classification
I
Remarks
I
I
1
to49
I
Data range error
I
Refer to Section 8.1.1.
I
50 to 59
Refer to Section 8.1.3.
Buffer memory write disable error
60
to
69
Refer to Section 8.1.2.
AD71 HOLD error
70
to
79
Refer to Section 8.1.5. AD71 BUSY stop error
80
to 89
Refer to Section 8.1.4. AD71 start and operation error
Table
8.1
Error
Code Classification
8-
1
I0 INAi
€6101-C
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