446
Program Protection
Section 8-7
Note
(1) Copying the program is possible if read protection is not set.
(2) The setting to prohibit backing up the program is not effective until the
program is transferred to the PLC. Always transfer the program after
changing the setting.
Prohibiting Creating
Program Files in File
Memory
When a password is set for the entire user program or for a task from the CX-
Programmer, prohibiting creating a program file (.OBJ) as a backup can be
set as an option. Doing so will make it impossible to create a program file in
file memory using the file memory operations. (This setting will also prohibit
uploading PLC data to the CX-Programmer and saving PLC data to a storage
device.)
Operating Procedure
1,2,3...
1.
When registering a password in the UM read protection password Box or
Task read protection Box, select the Prohibit from saving to a memory
card, and transferring program from PLC Option.
2.
Go online and then either select PLC - Transfer - To PLC to transfer the
program or select PLC - Protection - Set Password and click the
OK
but-
ton.
Application
The above procedure enables using a password to protect against disclosure
of the program to unauthorized persons.
Note
(1) Copying the program is possible if read protection is not set.
(2) The setting to prohibit backing up the program is not effective until the
program is transferred to the PLC. Always transfer the program after
changing the setting.
MAC Address:
01234567890A
00
NC
02
04
06
08
10
00
02
04
06
08
10
01
COM
03
05
07
09
11
01
03
05
07
09
11
BKUP
ERR/ALM
LNK/ACT
SYSMAC
CP1L
POWER
RUN
INH
1
00
01
02
03
04
06
00
01
03
04
06
COM
02
COM
05
07
COM
COM(V+)
05
07
ANALOG INPUT
V1+ V2+ COM
2
CX-Programmer
Password?
CX-Programmer
When a password is set for the entire user program, or for one or more tasks,
backing up the user program (i.e., creating an OBJ program file) can be prohibited.
CPU Unit
A program file (.OBJ) cannot be created with file memory operations.
Creating a program file as a backup using online
operations can be prohibited.
No PLC data
can be uploaded.
Memory Cassette
▲
Properties
Summary of Contents for CP1L-EL20DR-D
Page 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Software Licenses and Copyrights 7...
Page 192: ...158 Trial Operation and Debugging Section 5 3...
Page 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Page 666: ...632 Trouble Shooting Section 11 7...
Page 696: ...662 Standard Models Appendix A...
Page 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Page 836: ...802 PLC Setup Appendix G...
Page 838: ...804 TCP Status Transitions Appendix H...
Page 840: ...806 Ethernet Network Parameters Appendix I...
Page 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Page 844: ...810 Ethernet Specifications Appendix K...
Page 851: ...Index 817 work words 118 write protection 447...
Page 852: ...818 Index...
Page 854: ...820 Revision History...
Page 855: ......