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Program Protection Section 6-6
7. Remove the Memory Cassette, and replace the Memory Cassette slot cov-
er.
8. Return the setting of DIP switch pin SW2 to OFF, and close the cover.
9. Turn the power supply to the CPU Unit back ON.
Note After the automatic transfer from the Memory Cassette at startup has been
completed, the transfer will not start again automatically (regardless of the
Startup Mode setting in the PLC Setup). As described in the procedure above,
to start operation turn the power supply OFF, return the setting of DIP switch
SW2 to OFF, and then turn the power supply back ON.
6-6 Program Protection
The following protection functions are supported by the CP1H CPU Units.
• Read protection from the CX-Programmer
• Write protection using a DIP switch setting
• Write protection setting from the CX-Programmer
• Write protection against FINS commands sent to the CPU Unit via net-
works
6-6-1 Read Protection
Overview
It is possible to read-protect individual program tasks (called task read protec-
tion) or the entire user program (called UM read protection).
Read protection prevents anyone from displaying or editing the read-protected
set of tasks or entire user program from CX-Programmer without inputting the
correct password. If the password is input incorrectly five times consecutively,
password input will be disabled for two hours, providing even better security
for PLC data.
Operating Procedure
1,2,3... 1. Go online and select PLC - Protection - Release Password. The follow-
ing Release Read Protection Dialog Box will be displayed.
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