Omron NT31 NT31C Using a Memory Unit -VjVersions, PT Model System Program Function of Memory Unit

Using a Memory Unit (-Vj Versions) Section 3-5

3-5 Using a Memory Unit (-VjVersions)

This section discusses the use of a memory unit with a V1 or V2 version of an

NT31/NT31C PT (NT31-ST121j-EVjor NT31C-ST141j-EVj).

Reference: Depending on the PT model and the system program which is installed, the func- tion and using method of memory unit varies as follows.

PT Model	System Program	Function of Memory Unit
	Earlier than Ver. 2	Conventional memory unit function. (Refer to
Without Vj		56.)
suffix	Ver. 2 or later	(System programs can not be transmitted us-
		ing memory unit.)
With Vj suf-	Earlier than Ver. 2	New memory unit function.
		(System programs can be transmitted using
fix	Ver. 2 or later
		memory unit.)

The memory unit functions are determined by the model of PT being used, re- gardless of the version of the system program installed in the PT.

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 system program and screen data can be changed easily at the operation site without connecting to the Sup- port 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 installing the memory unit, without connecting to the Support Tool.

In addition, even if NT31/NT31C is replaced, the previous status can be main- tained simply by installing the memory unit that retains the system program and screen data of the previous NT31/NT31C.

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.

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.

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