Improved Read Protection Using Passwords - Omron CJ - 08-2008 Operation Manual

CJ1-H/CJ1M CPU Unit Ver. 2.0 Upgrades
Usage
Developer A CX-Programmer
Developer B CX-Programmer
Developer C
CX-Programmer
Restrictions to Function
Block Use
1-6-2

Improved Read Protection Using Passwords

Read Protection for Individual Tasks Using Passwords
Previous CPU Units (Pre-
Ver. 2.0 CPU Units)
CPU Unit Ver. 2.0 or Later
and CX-Programmer
Ver. 4.0 or Higher
When several programmers are developing a program, it isn't necessary for a
project manager to unify the data because just the debugged tasks can be
downloaded/uploaded. Also, transferring individual tasks can help avoid mis-
takes.
Edited
Just the edited tasks can be downloaded.
Unchanged
Unchanged
Upload individual tasks.
Individual tasks cannot be downloaded for programs containing function
blocks (unit version 3.0 or later only) (uploading is possible).
With the pre-Ver. 2.0 CS/CJ-series CPU Units, it was possible to read-protect
the entire PLC with a password (referred to as "UM read protection" below),
but it was not possible to protect individual tasks.
UM read protection prevented anyone from displaying, editing, or uploading
the entire user program from CX-Programmer without inputting the correct
password.
Overview
With the CPU Unit Ver. 2.0 or later CPU Units, it is possible to read-protect
individual program tasks (referred to as "task read protection" below) or the
entire PLC. same password controls access to all of the read-protected tasks.
Task read protection prevents anyone from displaying, editing, or uploading
the read-protected set of tasks from CX-Programmer without inputting the cor-
rect password. In this case, the entire program can be uploaded, but the read-
protected tasks cannot be displayed or edited without inputting the correct
password. Tasks that are not read-protected can be displayed, edited, or mod-
ified with online editing.
Note Task read protection cannot be set if UM read protection is already set. How-
ever, it is possible to set UM read protection after task read protection has
been set.
Section 1-6
CS/CJ-series
CPU Unit Ver.2.0 or later
33