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KERN PLS Series User Manual

KERN PLS Series
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90 TALJG_A/TALSG_A/TPLJG_A/TPLSG_A-BA-e-2112
RS-232C
13 RS-232C interface
A standard scale is equipped with a RS-232C interface used to connect a peripheral
device (e.g. a printer or a computer).
13.1 Technical specification
8-bit ASCII code
8 data bits, 1 stop bit, no transparency bit
transmission speed selected in the range of 1,2009,600 bauds
Trouble-free operation of the interface is ensured only when the appropriate
interface cable by KERN is used (max. 2 m)
To ensure communication between the balance and the printer, the following
conditions must be met:
Connect the scale with the printer interface using the appropriate cable.
Trouble-free operation is ensured only when the appropriate interface cable by
KERN is used.
The scale and printer transmission speeds must be compatible, see
chapter 11.3.
13.2 Use of the scale plug pins
Pin 1: Power +5V
Pin 2: Tx Signal
Pin 3: Rx Signal
Pin 5: GND

Table of Contents

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KERN PLS Series Specifications

General IconGeneral
Weighing plate materialstainless steel
Protection ClassIP65
Readability0.1g
Reproducibility0.1 g
Minimum part weight at piece counting0.1 g
Permissible ambient temperature40°C
InterfaceRS-232

Summary

Technical Specification

Basic Instructions

Intended Use

Specifies the designed purpose and proper usage of the weighing scale.

Non-intended Use

Lists prohibited uses of the scale to prevent damage or erroneous results.

Basic Safety Instructions

Compliance with the Instructions Included in the User Manual

Emphasizes reading the user manual for safe and correct operation of the device.

Personnel Training

States that only trained personnel should operate and maintain the device.

Unpacking, Positioning and Start-up

Installation Place, Operation Place

Details the crucial factors for selecting a suitable location for accurate scale operation.

Adjustment

Adjustment Mode Selection

Guides the user through selecting the appropriate calibration mode for the scale.

Automatic Adjustment Using the Internal Weight

Describes how the scale automatically calibrates itself using its internal weight.

Adjustment Using the Internal Weight after the Model CAL Button is Pressed (Models ALJ/PLJ)

Explains manual adjustment using the internal weight by pressing the CAL button.

Adjustment Using the External Weight

Details the procedure for calibrating the scale using an external weight.

Changing the Weight of the Internal Calibration Weight

Outlines the process for modifying the value of the internal calibration weight.

Verification

Covers the legal requirements and procedures for scale verification in the EU.

Basic Mode

Ordinary Weighing

Details the standard procedure for performing regular weight measurements.

Taring

Explains how to subtract the weight of a container or subtract the tare weight.

Main Menu “Applications”

Counting the Number of Pieces

Guides on using the scale to count identical items based on their average weight.

Determining Density Using the Equipment for the Under-Scales Weighing Hanger

Outlines the process for measuring density of solid bodies or liquids using specialized accessories.

Formulation

Guides on weighing ingredients for recipes in specific ratios.

Test Weighing

Describes the application for checking if weights fall within defined tolerance limits.

Determining the Percentage Value

Explains how to check sample weight against a reference weight in percentage terms.

Error Messages

Maintenance, Service and Disposal

Help for Any Minor Failures

Ionizing Unit (Factory Option for KERN ALJ-A03)

Basic Safety Instructions

Lists essential safety precautions for using the ionizing unit.

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