IS-300A
4. How to Operate Screens
4-50
(15) PROGRAM PROTECT MODE Screen
When this function is used, set values cannot be changed by any person other
than the supervisor.
PROGRAM PROTECT is usually set to OFF. When it is set to ON, set values
cannot be changed until PROGRAM PROTECT is set to OFF again.
Follow the procedure below to change the setting of PROGRAM PROTECT.
Also, it can be changed with the external input pin, PRG PROTECT.
Turn on the power supply with the (DOWN) key pressed or connect the
MA-660A to the circuit cable with the power supply turned on. The following
screen is displayed.
When the ENTER key is pressed after the +ON key is pressed, ON is
displayed.
You cannot go to other screens from this screen. Also, the external signals
cannot be received.
Turn off the power supply and turn on it again.
When PROGRAM PROTECT is ON, the display of the MENU screen changes.
COPY SETUP DATA, I/O CHECK and RESET TO DEFAULT are not displayed.
On the other screens, the cursor can be moved and the settings can be
checked by changing SCHEDULE # and VALVE #, but the settings cannot be
changed.
<When PROGRAM PROTECT is OFF>
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