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Using a Memory Unit Section 3-5
1,2,3... 1. Check that the power supply to the NT631/NT631C is OFF, then set the
DIP switches of the Memory Unit as follows after installing Memory Unit to
NT631/NT631C.
It is not strictly necessary to set SW2-1 to OFF (to disable writing to the
PT), but it is recommended to do so to avoid loss of data in the event of
operating errors.
Reference: • Setting SW2-4 to ON (System/Screen transmitted simultaneously) dis-
ables the setting of SW1-4.
• Setting SW2-4 to ON (System/Screen transmitted simultaneously) dis-
ables the setting of SW2-3, writes the system program into bank 0, and
the screen data into bank 1 at all times.
2. Switch the NT631/NT631C power ON.
The screen data is automatically written into the Memory Unit. The screen
data in the NT631/NT631C is preserved.
The messages Preparing, Transmitting, Verifying, and Finished are dis-
played on the screen in accordance with the progress of data writing.
At the same time, the progress of the data writing status is displayed by the
means of the number of bytes and blocks (1 bank = 16 block = 1024k byte).
RUN LED operates as follows according to the processing status.
Preparing: flashes at intervals of 1 second
Transmitting: flashes at intervals of 0.5 second
Verifying: flashes at intervals of 0.5 second
Finished: lights up
3. Switch the NT631/NT631C power OFF, remove the Memory Unit.
To operate NT631/NT631C continuously, switch the NT631/NT631C pow-
er back ON.
Writing Screen Data to the
PT Using Automatic
Transmission (Memory
Unit to PT)
In this mode, the system program or screen data in the Memory Unit is forcibly
written to NT631/NT631C irrespective of the setting status of the NT631/
NT631C.
Since data transmission by this method is faster than when the Support Tool
or system installer is used, it can save a lot of time. When transmitting the
same system program or screen data to multiple NT631/NT631C, this mode
becomes convenient.
SW1
SW1-4 ON: System program
OFF: Screen data
SW2-3 ON: Bank 1
OFF: Bank 0
SW2-4 ON: System/Screen transmitted simultaneously
OFF: System/Screen not transmitted simultaneousl
y
SW2