Omron CJ2 CPU UNIT User Manual page 68

Cj2 cpu unit hardware
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1 Overview
Function
Self-diag-
Non-fatal Error
System FAL Error Detec-
nosis and
Detection
tion (User-defined non-
Restora-
fatal error)
tion
Duplicated Refreshing
(Contin-
Error Detection
ued from
Basic I/O Unit Error Detec-
previous
tion
page)
Backup Memory Error
Detection
PLC Setup Error Detection
CPU Bus Unit Error Detec-
tion
Special I/O Unit Error
Detection
Tag Memory Error Detec-
tion
Battery Error Detection
CPU Bus Unit Setting
Error Detection
Special I/O Unit Setting
Error Detection
Option Board Error Detec-
tion
Fatal Error
Memory Error Detection
Detection
I/O Bus Error Detection
Unit/Rack Number Dupli-
cation Error
Too Many I/O Points Error
Detection
I/O Setting Error Detection
*11 Supported only by CJ2H-CPU6@-EIP and CJ2M-CPU3@.
*12 Supported only by the CJ2M-CPU3@.
1-26
This function generates a non-fatal (FAL) error when the user-defined condi-
tions are met in program.
This function detects an error when an immediate refreshing Instruction in an
interrupt task is competing with I/O refreshing of a cyclic task.
This function detects the errors in Basic I/O Units.
This function detects errors in the memory backup of the user programs and
parameter area (backup memory).
This function detects setting errors in the PLC Setup.
This function detects an error when there is an error in data exchange between
the CPU Unit and a CPU Bus Unit.
This function detects an error when there is an error in data exchange between
the CPU Unit and a Special I/O Unit.
This function detects errors in tag memory.
*11
This function detects an error when a battery is not connected to the CPU Unit
or when the battery voltage drops.
This function detects an error when the model of a CPU Bus Unit in the regis-
tered I/O tables does not agree with the model that is actually mounted in the
PLC.
This function detects an error when the model of a Special I/O Unit in the regis-
tered I/O tables does not agree with the model of Unit that is actually mounted.
This function detects the errors in Serial Option Board mounting status.
*12
This function detects errors that occur in memory of the CPU Unit.
This function detects when an error occurs in data transfers between the Units
mounted in Rack slots and the CPU Unit and detects when the End Cover is
not connected to the CPU Rack or an Expansion Rack.
This function detects an error when the same unit number is set for two or more
Units, the same word is allocated to two or more Basic I/O Units, or the same
rack number is set for two or more Racks.
This function detects an error when the total number of I/O points set in the I/O
tables or the number of Units per Rack exceeds the specified range.
The registered I/O tables are used to detect errors if the number of Units in the
registered I/O tables does not agree with the actual number of Units that are
connected or an Interrupt Unit has been connected in the wrong position.
Description
CJ2 CPU Unit Hardware User's Manual

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