Using A Memory Unit - Omron NT21 - SETUP MANUAL 10-2001 Setup Manual

Using a Memory Unit

3-5

Using a Memory Unit

Reference:
This explains how to use a Memory Unit with the NT21. By installing a Memory
Unit (NT-MF261) on the NT21, the system program or the screen data in the
NT21 can be recorded (backed up) in the Memory Unit.
In addition, the system program or the screen data in the Memory Unit can be
automatically read into the NT21 when it starts up. This means that system pro-
gram and screen data can be changed easily at the operation site without con-
necting to the NT Support Tool.
The data in the Memory Unit is retained without backup by a battery or other
means.
In systems where there are frequent setup changes, by preparing a number of
Memory Units in advance and recording screen data in them in accordance with
the control performed in each case, the NT21 screen data can be changed sim-
ply by installing the Memory Unit, without connecting to the NT Support Tool.
Even if NT21 is replaced, the previous status can be maintained simply by instal-
ling the Memory Unit that retains the system program and screen data of the pre-
vious NT21.
By using the following combinations, data can be stored (backed up) to a
Memory Unit.
• Screen data for two PTs.
• System program for two PTs.
• System program and screen data for one PT.
One Memory Unit can store the screen data for two PTs.
Note 1. Make sure that the power supply to the PT is OFF before connecting or dis-
connecting a Memory Unit. After mounting a Memory Unit, be sure to tighten
its two screws. Otherwise the product may malfunction.
2. During data transmission, do not turn OFF the power supply to the NT21.
3. Do not touch the PCB (printed circuit board) with bare hands.
Also, discharge any static electricity by touching a grounded object before
connecting or disconnecting a Memory Unit. Static electricity may cause the
components to malfunction.
S When a Memory Unit is mounted, the NT21 cannot be set to the operating sta-
tus. On completion of data transmission with a Memory Unit, always discon-
nect the Memory Unit from the NT21 before starting NT21 operation.
S Memory Units (NT-MF261) can be used in common for the following PT mod-
els: NT21 and NT31. One Memory Unit can store screen data for up to two PTs
of different models. However, since the data compatibility is not completed
among NT21 and NT31 models, an error may occur if an attempt is made to
read other PT model's data with an NT21. (The data must be converted using
the NT Support Tool.)
S One Memory Unit can store a system program for up to two PTs of different
models. In order to transmit a system program from the Memory Unit to the
NT21, the system program must be compatible to the target PT model.
S The status of memory switch settings and system settings can be recorded to
the Memory Unit besides screen data. When the data in the Memory Unit is
written into the NT21, make sure that these settings can be adapted to the
NT21 used before transmission.
Section 3-5
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