Table of Contents
Advertisement
Error Diagnosis and Elimination
Table 15-2. Evaluating System Events in DB254 (continued)
Error No.
(Decimal)
Information
13
Error in user program
(detected during program scan)
(Error response: Soft STOP)
(Error response: Error reported
when byte 2 contains 71
20
Memory submodule defective
(Error response: Hard STOP)
21
Subunits contain different
memory submodules
(Error response: Hard STOP)
22
Illegal memory submodule
type
(Error response: Hard STOP)
23
Memory submodules have
wrong system ID
(Error response: Hard STOP)
24
Memory submodules replaced
(Error response: Hard STOP)
25
Subunits have different user
programs
(Error response: Soft STOP)
26
User program has incorrect
signature
(Error response: Soft STOP)
15-14
Primary
Byte 2:
73
74
)
75
H)
71
Byte 3:
When byte 2 contains 71
or75
0: Cause in OB2
1: Cause in OB3
2: Error caused by IA/RA
Auxiliary
Information
: Illegal operation in user
H
program
: Range violation in DO
H
DW/DI FW
: OB2 or OB3 takes too
H
long to execute
: Interrupts disabled too
H
long
H
H
operation (see 8.2.8)
S5-95F
Corrective
Measures
Evaluate ISTACK
Check program
Replace memory
submodule
Always use memory
submodules with same
Order No. in both subunits
Use only correct memory
submodules (Chapter 2)
Use submodules with right
system ID
Never replace memory
submodules while PLC is in
RUN mode
Insert memory submodule
with different contents only
after overall reset
Insert memory submodules
with identical user programs
Give user program new
signature
Replace memory
submodule
Replace basic unit
EWA 4NEB 812 6210-02
Advertisement
Table of Contents
