Mettler Toledo MT User's Guide download pdf (Page 54)

IND780 User’s Guide

Table 2-4: Recall Screen Softkeys

Icon Explanation

Weight Recall—Displays ID, Gross, Tare, and Net active weight readings for

each scale.

System Information Recall—Displays system information, including the

model and serial number, Terminal ID #1, Terminal ID #2, Terminal ID #3,

and software and hardware information. This ID information is entered in the

Setup mode. The IND780 Technical Manual, Chapter 3.0, Configuration,

Terminal, Device, gives details on entering Terminal ID information.

Metrology Recall—Displays the terminal metrology controlled firmware

version number, whether the terminal is programmed as approved or not,

and the last calibration time and date for each scale. On the high-precision

IDNet version, the Ident Code (calibration tracking) is also displayed.

Totals Recall—Displays the sub-total and grand-total transaction count and

total weight for the terminal. Press the CLEAR SUBTOTAL softkey

to clear

the sub-total amounts. Press the CLEAR softkey

to clear both the grand-

total and sub-total amounts. Press the PRINT softkey to print a report of

the totals. Note that, if Clear Total or Clear Subtotal After Print are enabled in

Setup, these values will clear after printing.

Target Comparison

Target comparison is used to compare either the gross or net weight on the scale

to a predetermined target value. This feature can be useful in both automatic and

manual processes. As an example, an automatic filling system using target

comparison could provide a Start signal to the IND780 and the IND780 could

control the feeder system to fill a container to a desired target.

An example of a manual process could be a checkweighing station where an

operator is checking net weight of packages. The IND780 can use its target

comparison feature to provide a graphical Over - OK - Under indication to help the

operator determine if the weight of each package is acceptable or not compared to

an ideal weight.

Target (setpoint) comparison is most often used in two types of applications:

• Material transfer applications—Requires that a control device deactivate when

a target value is achieved

• Over/Under applications—Classify a load placed on the scale platform as

above or below the target value or within the target tolerance range

The IND780 target comparison rate (for analog load cell scales) is 50

comparisons per second. The comparison rate for high precision IDNet bases

depends on the module in the base.

See the IND780 Technical Manual, Chapter 3.0, Configuration, the Application

section, Memory, Target Table and Operation, Target for further information about

configuring parameters for target comparison operations.

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Mettler Toledo MT User's Guide Page 54

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