Lbf kgf n – Checkline WTTM-GEN1 User Manual

Page 9

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6.6 Changing Units of Measurement

The WTTM can display force measurements in any of the following three engi-
neering units:

■ lbf (pounds)

■ N (Newtons)

■ Kgf (kilograms)

To change the selected engineering units for display press UNITS key. Each
time the key is pressed, the units will change from one to the other as follows:

Lbf

Kgf

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SPECIFICATION

Baud rate

2400, 4800; 9600 or 19200 (selectable, see general settings)

Data length

8 bits

Stop bit

Parity

None

PROTOCOL CODE

Extern >>

AAcr

Tare

ABcr

Stop Output

ACcr

Change to Peak Mode

ADcr

Change to Average Mode

AEcr

Reset Peak

AFcr

Change Units to kg (g)

AGcr

Change Units to N

AHcr

Change Units to lb (oz)

BAcr

Data output request (single reading)

BBcr

Data output request (10/sec)

BB1cr

Data output request (20/sec)

BB2cr

Data output request (50/sec)

BB3cr

Data output request (100/sec)

BDcr

Units confirmation request

BEcr

Peak data output request

BFcr

Minus peak data output request

(carriage return)

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8.0 D

ATA

RANSFER

Model WTTM testers can transfer measuring data by means of an RS-232C interface.
A 9-pin D-Sub connector is provided for this purpose, which can be found at the left
side of the instrument. A connector cable for the serial port is included. If a custom
serial cable must be used or if the user wishes to access the analog output, the pin
designations are as follows:

8.1 RS-232C Interface

The RS-232C interface can be used for the direct communication between an
appropriate serial I/O-card of a computer and the instrument. The minimum
requirement for the data transfer up to 19200 baud is the connection of the
RXD, TXD and GND communication terminal.