Omron Programmable Terminals NT31 NT31C User Manual

Page 58

3-6

Section

Using a Memory Unit (Versions without the -Vj Suffix)

3-6

Using a Memory Unit (Versions without the -V

j Suffix)

This section discusses the use of a memory unit with the basic versions of the
NT31/NT31C PTs (NT31-ST121

j-E or NT31C-ST141j-E).

Reference: In this case, the function and use of the memory unit are the same as ones for the

NT31/NT31C without the V

j suffix. (The system program transmission by using

a memory unit cannot be processed.)

By installing a memory unit (NT-MF261) on the NT31/NT31C, the screen data in
the NT31/NT31C can be recorded (backed up) in the memory unit.

In addition, the screen data in the memory unit can be automatically read into the
NT31/NT31C when it starts up. This means that screen data can be changed
easily at the operation site without connecting to the 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 NT31/NT31C screen data can be
changed simply by changing the memory unit, without connecting to the Support
Tool.

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.

2. During data transmission, do not turn off the power supply to the

NT31/NT31C or reset it.

3. Do not touch the PCB (printed circuit board) with bare hands.

Reference:

S When a memory unit is mounted, the NT31/NT31C cannot be set to the oper-

ating status. On completion of data transmission with a memory unit, always
disconnect the memory unit from the NT31/NT31C before starting
NT31/NT31C operation.

S Memory units (NT-MF261) can be used in common for the following PT mod-

els: NT31, NT31C, NT631, NT631C (with or without the V

j suffix). One

memory unit can store screen data for up to two PTs of different models. How-
ever, since the data compatibility is not complete between NT31/NT31C and
NT631/NT631C, the data of NT631 cannot be used in NT31C without putting it
through a conversion (the data must be converted using the Support Tool).

Note also that although there is data compatibility between the NT31 and
NT31C, and between the NT631 and NT631C, the display may not be cor-
rect since these models have different numbers of colors.

The screen data for NT31/NT31C PTs with system program Ver. 2 or later
cannot be used with PTs with system program earlier than Ver. 2.

S The statuses 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 NT31/NT31C, make sure that these settings can be adapted to
the NT31/NT31C used before transmission.