S5-95F Error Diagnosis and Elimination
Table 15-2. Evaluating System Events in DB254 (continued)
Error No.
(Decimal)
Primary
Information
Auxiliary
Information
Corrective
Measures
40 Hardware fault in onboard DI
(Error response specified in
DB1: Soft STOP or reaction in
user program)
Byte 2:
Byte no.
Byte 3:
Bit no.*
Byte 5:
Signal group
Check load voltage
Replace basic unit
41 Hardware fault in onboard DQ
(Error response specified in
DB1: Soft STOP or reaction in
user program)
Byte 2:
Byte no.
Byte 3:
Bit no.*
Byte 5:
Signal group
Check load voltage
(voltage including ripple
20
to 30 V)
Check wiring
Replace basic unit
42 Hardware fault on onboard
hardware interrupts
(Error response specified in
DB1: Soft STOP or reaction in
user program)
Byte 2:
Byte no.
Byte 3:
Bit no.*
Byte 5:
Signal group
Check load voltage
Replace basic unit
43 Hardware fault in onboard
counter
(Error response specified in
DB1: Soft STOP or reaction in
user program)
Byte 2:
Byte no.
Byte 3:
Bit no.*
Byte 5:
Signal group
Check load voltage
Replace basic unit
44 Hardware fault on external DI
module
(Error response specified in
DB1: Soft STOP or reaction in
user program)
Byte 2:
Byte no.
Byte 3:
Bit no.*
Byte 5:
Signal group
Check load voltage
Replace DI module
45 Hardware fault on external DQ
module
(Error response specified in
DB1: Soft STOP or reaction in
user program)
Byte 2:
Byte no.
Byte 3:
Bit no.*
Byte 5:
Signal group
Check load voltage
(voltage including ripple
20 to 30 V)
Check module switch
setting (P/M)
Check wiring
Replace module and/or
bus unit
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* FF
H
or 255
D
means that the bit number could not be ascertained
EWA 4NEB 812 6210-02
15-15
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