S5-95F Error Diagnosis and Elimination
Table 15-2. Evaluating System Events in DB254 (continued)
Error No.
(Decimal)
Primary
Information
Auxiliary
Information
Corrective
Measures
12 Error in user program (error
detected during program scan)
(Error response: Soft STOP)
Byte 2:
51
H
: Substitution error in FB
52
H
: Block nesting depth
exceeded
53
H
: DB not opened or no
such DW in DB
54
H
: DB generation error
55
H
: Redundant module
referenced with uneven
address
56
H
: G DB operation not
allowed on DB0, 1 or 252
to 254, as these are
reserved DBs
57
H
: Non-existent block called
58
H
: Illegal I/O access
operation with T PY
59
H
: Illegal I/O access
operation with T PW
5A
H
: Illegal I/O access
operation with L PY
5B
H
: Illegal I/O access
operation with L PW
5C
H
: Interrupt caused
exceeding of block
nesting depth
5D
H
: Illegal reference in TIR
statement
5E
H
: Illegal reference in LIR
statement
5F
H
: Substitution error in
integral block
60
H
: DB for OB251 not
opened
61
H
: Illegal reference in TNB
statement
Evaluate ISTACK
Check program
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EWA 4NEB 812 6210-02
15-13
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