Omron CP1H CPU Operation Manual page 616

Troubleshooting
I/O Bus Errors
Duplicate Number Error
582
■ Reference Information
Error flag Memory Error Flag, A401.15
Error code (A400) 80F1
Error information Memory Error Location, A403
An I/O bus error occurs in data transfer between the CPU Units and Units
connected to the I/O bus. Cycle the power supply. If operation is not restored
when the power supply has been cycled, turn OFF the power supply and
check that connections are proper and that there is no damage.
Seven-segment
display
8.0.→c.a.→0.a.→0.a.→ I/O bus error for CP-series Units
8.0.→c.f.→0.f.→0.f.→ I/O bus error for CJ-series Units, error location unknown
8.0.→c.e.→0.e.→0.e.→ I/O bus error for CJ-series Units, no End Cover
c.0. → →
8.0.
I/O bus error location
8.0.→c.0.→ →0.0.→0.0.→ First CJ-
→0.0.→0.1.→ Second CJ-
■ Reference Information
Error flag I/O Bus Error Flag, A401.14
Error code (A400) 80C0, 80CA, 80CE, 80CF
Error information I/O bus error details, A404
A duplicate unit number error occurs for CJ-series Units. Turn OFF the power
supply and make sure the same unit number is not set for more than one Unit.
8.0. → e.9. →
→
Duplicate Unit numbers
Seven-segment display
8.0.→e.9.→ →0.0.→0.1.→ The same number has been set for more than one CPU
→8.0.→0.1.→ The same number has been set for more than one Spe-
Probable cause and possible remedy
An error has occurred in data transfer with a CP-series
Expansion Unit or Expansion I/O Unit. Check the condition of
the connection cables.
An error has occurred in data transfer for CJ-series Units, but
the error location is not known. Check the connections
between the CPU Unit, CJ Unit Adapter, and CJ-series Units.
No End Cover has been installed for CJ-series Units. Properly
install the End Cover.
→
An error has occurred in data transfer for
series Unit CJ-series Units (first Unit or second Unit).
Check that there is no damage to the rele-
vant Unit. Replace the Unit if required.
series Unit
→
Probable cause and possible remedy
Bus Unit. Check the unit number settings and eliminate
the duplication.
cial I/O Unit. Check the unit number settings and elimi-
nate the duplication.
Section 11-2