Error Information - Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual

Error Processing

10-2-2 Error Information

Indicators on CS1D CPU Units
RUN: Lit when the PLC is in
RUN or MONITOR mode.
ERR/ALM: Flashing: Non-fatal
error
Lit: Fatal error
INH: Lit when Output OFF Bit.
PRPHL: Lit when the CPU Unit
is communicating
through the peripheral
port.
Indicators on Duplex Unit
DPL STATUS: Lit green: Normal operation
in Duplex Mode
Flashing green: Duplex
initialization
Lit red: Duplex bus error
Flashing red: Duplex
verification error
Not lit: Normal operation in
Simplex Mode
L.ACTIVE/R.ACTIVE: Active CPU Unit
Lit green: Active
Not lit: Standby
L.CPU STATUS/R.CPU STATUS
Lit green: RUN or MONITOR mode
Flashing green: Duplex initialization or CPU standby
Lit red: CPU error causing operation to switch
Flashing read: Other error causing operation to switch
Not lit: PROGRAM mode or other status
390
There are basically five sources of information on errors that have occurred:
• The indicators on the CPU Units
• The indicators on the Duplex Unit (Duplex CPU Systems only)
• The Auxiliary Area Error Flags
• The Auxiliary Area Error Information Flag and Words
• The Auxiliary Area Error Code Word
BKUP: Lit when data is
CS
RUN
ERR/ALM
INH BKUP
PRPH COMM
COMM: Lit when the
DPL01
L
R
Note When two or more errors occur at the same time, the highest (most serious)
error code will be stored in A400.
Auxiliary Area Flags and Words
Error Flags
being written to
the flash
memory.
Flags
indicating
the type of
error
CPU Unit is
communicating
through the
RS-232C port.
CS
DPL STATUS
ACTIVE
CPU STATUS
ACTIVE
CPU STATUS
Section 10-2
Error Info. Error Code
Word (A400)
Error Code
Words
Word (A400)
providing
error
information
A400
contains
the error
code (See
note.)