1-17
1 Overview
CJ2 CPU Unit Hardware User’s Manual
1-3 Specifications
1
1-3-3 Function Specifications
Self-diag-
nosis and
Restora-
tion
(Contin-
ued from
previous
page)
Fatal Error
Detection
(Continued from
previous page)
System FALS Error Detec-
tion (User-defined Fatal
Error)
This function generates a fatal (FALS) error when the user-defined conditions
are met in program.
Version Error Detection This function detects an error when a user program includes a function that is
not supported by the current unit version.
Memory Card Error Detec-
tion
This function detects an error when the automatic file transfer from Memory
Card fails at startup.
Memory Self-restoration Function This function performs a parity check on the user program area and self-resto-
ration data.
Mainte-
nance
Simple Backup Function 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.
Unsolicited Communications A function that allows the PLC to use Network Communications Instruction to
send required FINS commands to a computer connected via a Host Link
Remote Programming and Monitoring 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
Automatic Online Connection via
Network
Direct
Serial
Connec-
tion
This function enables automatically connecting to the PLC online when the CX-
Programmer is directly connected by a serial connection (peripheral (USB) port
or serial port).
Via Net-
works
This function enables connecting the CX-Programmer online to a PLC that is
connected via an EtherNet/IP network.
Security Read Protection using Password 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.
FINS Write Protection This function prohibits writing by using FINS commands sent over the network.
Unit Name Function This function allows the users to give any names to the Units. Names are veri-
fied at online connection to prevent wrong connection
Hardware ID Using Lot Numbers This function sets operation protection by identifying hardware using the user
programs according to lot numbers stored in the Auxiliary Area.
Function Description
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