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
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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
CK3W-AX1515N
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