Omron CJ2 CPU UNIT User Manual page 69

Cj2 cpu unit hardware
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Function
Self-diag-
Fatal Error
Program Error Detection
nosis and
Detection
Restora-
tion
(Contin-
ued from
previous
page)
Cycle Time Exceeded
Error Detection
System FALS Error Detec-
tion (User-defined Fatal
Error)
Version Error Detection
Memory Card Transfer
Error Detection
Memory Self-restoration Function
Mainte-
Simple Backup Function
nance
Unsolicited Communications
Remote Programming and Monitoring
Automatic Online Connection via
Network
Security
Read Protection using Password
FINS Write Protection
Unit Name Function
Hardware ID Using Lot Numbers
*13 This function can be used only with CJ2H CPU Units.
CJ2 CPU Unit Hardware User's Manual
This function detects errors in programs.
Instruction Processing
This function detects an error when the given data value is invalid when execut-
Error Detection
ing an instruction, or execution of instruction between tasks was attempted.
Indirect DM/EM BCD
This function detects an error when an indirect DM/EM address in BCD mode
Error Detection
is not BCD.
Illegal Area Access
This function detects an error when an attempt is made to access an illegal
Error Detection
area with an instruction operand.
No END Error Detec-
This function detects an error when there is no END instruction at the end of
tion
the program.
Task Error Detection
This function detects an error when there are no tasks that can be executed in
a cycle, there is no program for a task, or the execution condition for an inter-
rupt task was met but there is no interrupt task with the specified number.
Differentiation Over-
This function detects an error when too many differentiated instructions are
flow Error Detection
entered or deleted during online editing (131,072 times or more).
Invalid Instruction Error
This function detects an error when an attempt is made to execute an instruc-
Detection
tion that is not defined in the system.
User Program Area
This function detects an error when instruction data is stored after the last
Overflow Error Detec-
address in user program area.
tion
This function monitors the cycle time (10 to 40,000 ms) and stops the operation
when the set value is exceeded.
This function generates a fatal (FALS) error when the user-defined conditions
are met in program.
This function detects an error when a user program includes a function that is
not supported by the current unit version.
This function detects an error when the automatic file transfer from Memory
Card fails at startup.
This function performs a parity check on the user program area and self-resto-
ration data.
This function collectively backs up the data in CPU Unit (user programs,
parameters, and I/O memory) and internal backup data in the I/O Units.
A function that allows the PLC to use Network Communications Instruction to
send required FINS commands to a computer connected via a Host Link
Host Link communications can be used for remote programming and remote
monitoring through a Controller Link, Ethernet, DeviceNet, or SYSMAC LINK
Network. Communications across network layers can be performed.
Controller Link or Ethernet: 8 layers
DeviceNet or SYSMAC LINK: 3 layers
Direct
This function enables automatically connecting to the PLC online when the CX-
Serial
Programmer is directly connected by a serial connection (peripheral (USB) port
Connec-
or serial port).
tion
Via Net-
This function enables connecting the CX-Programmer online to a PLC that is
works
connected via an EtherNet/IP network.
This function protects reading and displaying programs and tasks using pass-
words.
Write protection: Set using the DIP switch.
Read protection: Set a password using the CX-Programmer.
This function prohibits writing by using FINS commands sent over the network.
This function allows the users to give any names to the Units. Names are veri-
fied at online connection to prevent wrong connection
This function sets operation protection by identifying hardware using the user
programs according to lot numbers stored in the Auxiliary Area.
Description
*13
1 Overview
1
1-27

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