Omron NJ501-1 Series User Manual page 182

5 Troubleshooting
Event code Event name
24020000 hex Too Many I/O
Points
24030000 hex End Cover
Missing
24040000 hex Incorrect
Unit/Expan-
sion Rack
Connection
24050000 hex Duplicate
Unit Number
34010000 hex I/O Setting
Check Error
64010000 hex Impossible to
Access Spe-
cial Unit
5-16
Meaning Assumed cause
The total number of • The total number of I/O points
I/O points in the in the connected CJ-series
connected CJ- Basic I/O Units exceeds 2,560.
series Units
exceeds the maxi-
mum specified
value of the CPU
Unit.
The End Cover is • The End Cover is not con-
not connected to nected to right end of the CPU
right end of the Rack or an Expansion Rack.
CPU Rack or an
• The End Cover is not con-
Expansion Rack.
nected properly.
The number of • More than 10 Units are con-
Units or Expansion nected to one Rack.
Racks exceeds the
• More than three Expansion
maximum value
Racks are connected.
specified for the
• More than two Interrupt Input
CPU Unit. Or, an
Units are mounted.
Interrupt Input Unit
• An Interrupt Input Unit was
was mounted to a
mounted to a unsupported slot
unsupported slot or
or to an Expansion Rack.
to an Expansion
Rack.
The same unit num- • The same unit number is set for
ber is set for more more than one Special I/O Unit
than one Special or more than one CPU Bus
I/O Unit or more Unit.
than one CPU Bus
• The same unit number is
Unit.
assigned to a Special I/O Unit
that uses more than one unit
number and another Special
I/O Unit.
There is an incon- • A Unit model or Special Unit
sistency between a unit number in the Unit Configu-
Unit model in the ration in the CPU Unit is differ-
Unit Configuration ent from the Unit model or the
in the CPU Unit and Special Unit unit number of the
the Unit model that Unit that is mounted in the Con-
is mounted in the troller.
Controller.
An error occurred in • The setting of the rotary
data exchange switches or a DIP switch pin on
between the CPU a Special Unit is not correct.
Unit and a Special
• An error occurred in the Special
Unit.
Unit.
• The Unit connection is faulty.
• Noise
• A Unit has failed.
Level
Maj Prt Min Obs Info
S
S
S
S
S
S
NJ-series CPU Unit Hardware User's Manual (W500)
Reference
page 5-36
page 5-37
page 5-37
page 5-38
page 5-39
page 5-40