Omron CK3W-AX1515N Motion Controller

Omron CK3W-AX1515N  Motion Controller

If the selected tasks or program are write-protected by selecting this option

when registering a password, only the tasks (program) that are password

protected will be protected from overwriting. It will still be possible to over

write other tasks or programs with operations such as online editing and

task downloading.

2. All tasks (programs) can be overwritten when program read protection is

not enabled.

3. The setting to enable/disable creating file memory program files will not

take effect unless the program is transferred to the CPU Unit. Always trans

fer the program after changing this setting.

Operating Procedure

1. When registering a password in the UM read protection password Box or

Task read protection Box, select the Prohibit from overwriting to a protect

ed program Option.

Auxiliary Area Flags and Bits related to Password Protection

Name

UM Read Protection

Flag

address

A09900

Description

Indicates whether or not the PLC (the entire user

program) is read-protected.

0: UM read protection is not set.

1: UM read protection is set.

Task Read Protec

tion Flag

A09901

0: Creation of backup program file allowed

1: Creation of backup program file prohibited

Indicates whether or not selected program tasks

are read-protected.

0: Task read protection is not set.

1: Task read protection is set.

Program Write Pro

tection for Read Pro

tection

Enable/Disable Bit

for Program Backup

A09902

A09903

Indicates whether or not the write protection

option has been selected to prevent overwriting

of password-protected tasks or programs.

0: Overwriting allowed

1: Overwriting prohibited (write-protected)

Indicates whether or not a backup program file

(.OBJ file) can be created when UM read protec

tion or task read protection is set.

1-6-3 Write Protection from FINS Commands Sent to CPU Units via

Networks

Previous CPU Units (Pre-Ver. 2.0 CPU Units)

With the pre-Ver. 2.0 CS/CJ-series CPU Units, there was no way to prohibit

write operations and other editing operations sent to the PLC's CPU Unit as

FINS commands through a network such as Ethernet, i.e., connections other

than direct serial connections.

CPU Unit Ver. 2.0 or Later

Summary

With the CPU Unit Ver. 2.0 and later CS/CJ-series CPU Units, it is possible to

prohibit write operations and other editing operations sent to the PLC's CPU

Unit as FINS commands through a network (including write operations from

CX-Programmer, CX-Protocol, CX-Process, and other applications using Fin

sGateway). Read processes are not prohibited.

FINS write protection can disable write processes such as downloading the

user program, PLC Setup, or I/O memory, changing the operating mode, and

performing online editing.

It is possible to exclude selected nodes from write protection so that data can

be written from those nodes.

An event log in the CPU Unit automatically records all write processes sent

through the network and that log can be read with a FINS command.

Example