Vishay VT 200, VT 220 Technical Manual

VT200/220

Weight Indicator

Technical Manual

AND Protocol

Revision 1.00.01 November 2008 Doc # TM-VT200/220-EN

Table of Contents

VT200/220 Technical Manual, Rev 1.00.01 ii Doc # TM-VT200/220-EN

Table of Contents

TABLE OF CONTENTS ................................................................................ II

TABLE OF FIGURES .................................................................................. VI

LEGAL NOTICE........................................................................................VII

WARRANTY........................................................................................... VIII

SAFETY INSTRUCTIONS........................................................................... IX

DECLARATION OF CONFORMITY .............................................................. XI

ABOUT THIS DOCUMENT.........................................................................XII

1 TECHNICAL SPECIFICATIONS......................................................... 14

1.1 GENERAL ........................................................................................... 14

1.2 ANALOG INPUT .................................................................................... 15

1.3 ANALOG OUTPUT (OPTIONAL)................................................................... 15

1.4 DIGITAL INPUT .................................................................................... 16

1.5 DIGITAL OUTPUTS ................................................................................ 16

2 INSTALLATION .............................................................................. 17

2.1 SITE REQUIREMENTS ............................................................................. 17

2.2 MOUNTING THE INDICATOR ...................................................................... 17

2.2.1 Desktop Model (Aluminum Enclosure).................................................. 17

2.2.2 Wall-Mount Model (Stainless Steel Enclosure) ....................................... 18

2.3 CONNECTING LOAD CELLS ....................................................................... 19

2.3.1 Desktop Model (Aluminum Enclosure).................................................. 19

2.3.2 Wall-Mount Model (Stainless Steel) ..................................................... 20

2.3.3 Load Cell Operating Parameters.......................................................... 20

2.4 SERIAL CONNECTIONS............................................................................ 21

2.4.1 Printer and PC Cables........................................................................ 21

2.4.2 RS485 Cable Connections .................................. ... ............................. 21

2.5 CONNECTING POWER ............................................................................. 22

3 DISPLAY, KEYS AND MENUS........................................................... 23

Table of Contents

VT200/220 Technical Manual, Rev 1.00.01 iii Doc # TM-VT200/220-EN

3.1

THE DISPLAY ...................................................................................... 23

3.1.1 Status Annunciators............................................................. ... ... ... .... 24

3.1.2 Common Messages Shown on the Display ............................................ 24

3.2 FRONT PANEL KEYS............................................................................... 25

3.2.1 Using Keys to Perform Operations ....................................................... 25

3.2.2 Using Keys to Navigate and Enter Information ...................................... 26

3.2.3 Editing Multiple Digits..................................................... ... ... ... ... ... ... . 26

3.3 THE FUNCTION MENU............................................................................. 26

3.3.1 Using the Function Menu........................................... ... ... ... ... ............. 27

3.3.2 Function Summary............................................................................ 27

3.4 SETUP MENUS ..................................................................................... 31

3.4.1 Accessing and Navigating Setup Menus................................................ 31

3.4.2 Menu Structure ................................................................................ 32

3.4.3 Parameter Summary ......................................................................... 32

SETUP > SETUP 1 (General Operating Parameters)............................................................32

SETUP > SETUP 2 (Com 1 Settings).................................................................................33

SETUP > SETUP 3 (Com 2 Settings).................................................................................34

SETUP > SETUP 4 (Tilt Switch)........................................................................................35

SETUP > SETUP 5 (Setpoints).........................................................................................35

SETUP > SETUP 6 (Lock Keys) ........................................................................................3 6

ACAL (Analog Output)........................................ ... ...... ... ....... ... ...... ... ...... ... ....... ... ...... ... .37

4 CALIBRATION ................................................................................ 38

4.1 CALIBRATION WITH STANDARD WEIGHTS (S-CAL) .......................................... 38

4.1.1 Zero (Dead-Load) Calibration ............................................................. 38

4.1.2 Span Calibration............................................................................... 39

4.2 ELECTRONIC CALIBRATION (E-CAL) ........................................................... 39

4.2.1 Calculating Calibration Values............................................................. 40

4.2.2 Setting Zero Calibration (Dead-Load) Value.......................................... 40

4.2.3 Span (Max. Capacity) Calibration ........................................................ 41

4.3 STORING CALIBRATION DATA ................................................................... 41

4.4 LOCKING AND UNLOCKING CALIBRATION....................................................... 41

4.4.1 Sealing Indicator Enclosure with Stickers............................................. . 42

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VT200/220 Technical Manual, Rev 1.00.01 iv Doc # TM-VT200/220-EN

4.4.2 Securing Load Receptor................... ... ... ... ... ... ... .... ............................ 44

4.4.3 Checking Seal Status and Audit Trail Counter.............................. ... ... ... . 44

5 GENERAL SYSTEM PARAMETERS..................................................... 45

5.1 PAR MENU......................................................................................... 45

5.1.1 Accessing the Menu and Editing Parameters.......................................... 45

5.1.2 PAR Menu Parameters ....................................................................... 46

5.1.3 Dual-scale Connecting And Parameter Settings ..................................... 47

5.2 SETUP 1 (INSIDE SETUP MENU) ............................................................. 47

5.2.1 Accessing the Menu and Editing Parameters.......................................... 47

5.2.2 SETUP 1 Parameters ......................................... ... .... ... ... ... ... ............. 48

6 SERIAL COMMUNICATION.............................................................. 49

6.1 SERIAL PORTS CONFIGURATION................................................................. 49

6.1.1 RS232 Serial Port ................................. ... ... ... ... ................................ 49

6.1.2 RS485 Serial Port ................................. ... ... ... ... ................................ 49

6.2 SETTING PORT OUTPUT PARAMETERS .......................................................... 50

6.2.1 Setting Port 1 Output ........................................................................ 50

6.2.2 Setting Port 2 Output ........................................................................ 50

6.3 OUTPUT TYPES .................................................................................... 50

6.3.1 Local Printer..................................................................................... 50

6.3.2 Continuous Weight Output ................................................................. 50

Continuous Weight Data Block Composition LEO Format.....................................................51

Continuous Weight Data Block Composition AND Format ...................................................51

Two-Scale Operation............................................................................... .......................52

6.3.3 Continuous Weight With Tare ............................................................. 52

Data Block Composition......................................................... ........................................ .53

When Display Indication is Not Weight .................................... ......................................... 53

6.3.4 Print on Demand............................................................................... 53

6.3.5 Alibi Transmit................................................................................... 54

6.3.6 Alibi Mode Commands ....................................................................... 54

Transmit Displayed Weight ................................................................... ..........................54

Command “ZERO” ............................................. ...... ... ...... ... ....... ... ... ...... ... ....... ... ...... ... .54

Print on Demand Character................................................ ............................................. 54

6.3.7 EDP Protocol Output.......................................................................... 55

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VT200/220 Technical Manual, Rev 1.00.01 v Doc # TM-VT200/220-EN

Full Protocol Workflow.................................................................................... ................55

Relevant Setup Parameters............................................................................................. 55

EDP Data Block Composition .......................................................................................... .56

6.3.8 Remote Printer Output....................................................................... 56

6.3.9 Master-Slave Protocol Output ............................................................. 56

Master-Slave Commands................................................................................................56

Gross-Tare-Net Weight Transmission .............................................................. .................58

Tare Presetting via PC....................................................................................................59

Separation of COM1 and COM2 Network Addresses............................................................ 59

6.4 STANDARD PRINT FORMATS ..................................................................... 60

6.5 CUSTOM PRINT FORMATS ........................................................................ 61

6.5.1 Creating a Custom Print Format.......................................................... 61

6.5.2 Downloading a Custom Print Format.................................................... 62

7 OUTPUTS AND DIGITAL INPUT....................................................... 64

7.1 SPECIFICATIONS .................................................................................. 64

7.1.1 Digital Outputs................................................................................. 64

7.1.2 Analog Outputs ................................................................................ 64

7.1.3 Digital Input (Tilt Switch)................................................................... 64

7.2 CONNECTING DIGITAL OUTPUTS AND TILT SWITCH .......................................... 65

7.3 SETTING THRESHOLDS FOR DIGITAL SETPOINTS.............................................. 65

7.4 CONFIGURING ANALOG OUTPUT................................................................. 66

7.4.1 Connecting PCB and Setting Jumper.................................................... 67

7.4.2 Setting Analog Output Parameters ...................................................... 68

7.4.3 Calibrating D/A Converter ............................... ... ... .... ... ... ... ... ... .......... 69

7.5 USING THE TILT SWITCH......................................................................... 70

7.5.1 Tilt Switch Options. ... ... ... ... ... ...................................... ... ... ... ... ... ... .... 70

8 SERVICE OPERATIONS AND TESTING ............................................. 71

8.1 SERVICE OPERATIONS ............................................................................ 71

8.1.1 Setting and Changing Calibration Password (Function 40)....................... 71

8.1.2 Setting Date, Time and Serial Number (Function 05).............................. 71

8.1.3 Displaying Remaining Battery Capacity (Function 02)............................ 72

8.1.4 Checking Calibration Seal (Function 48).............................................. 72

Table of Figures

VT200/220 Technical Manual, Rev 1.00.01 vi Doc # TM-VT200/220-EN

8.1.5 Viewing Load Cell mV (Function 80).................................................... 72

8.1.6 Viewing A/D Count (Function 81) ....................................................... 73

8.1.7 View Software Version Number and Date (Function 82)......................... 73

8.1.8 Locking and Unlocking Keys ............................................................... 73

8.2 TESTING THE INDICATOR......................................................................... 73

8.2.1 Testing ROM/RAM Integrity (Function 86)............................................. 73

8.2.2 Testing the Keypad and Display (Function 90, 91) ................................ 74

8.2.3 Testing Digital Input and Outputs (Function 93) . ... .... ... ......................... 74

8.2.4 Testing the Print Buffer (Function 94) .................................................. 75

8.2.5 Testing Data Received on Both Serial Ports (Function 96) ....................... 75

9 TROUBLESHOOTING....................................................................... 76

9.1 ERRORS, CAUSES AND REMEDIES............................................................... 76

9.2 CHECKING LOAD CELL CONNECTION............................................................ 78

9.3 CHECKING POWER SUPPLY ....................................................................... 78

9.4 CHECKING DIGITAL OUTPUTS ................................................................... 78

APPENDIX A: TECHNICAL DRAWINGS ...................................................... 79

CONTACTING VISHAY TRANSDUCERS ...................................................... 84

Table of Figures

FIGURE 1 – DESKTOP MODEL, FRONT AND REAR VIEW .................................................. 17

FIGURE 2 – WALL-MOUNT MODEL, FRONT AND REAR VIEW ............................................. 18

FIGURE 3 – LOAD CELL CONNECTION DIAGRAM FOR WALL-MOUNT MODEL ............................ 19

FIGURE 4 – LOAD CELL CONNECTION DIAGRAM FOR STAINLESS-STEEL MODEL ....................... 20

FIGURE 5 – PRINTER AND PC CABLES CONNECTION DIAGRAM ......................................... 21

FIGURE 6 – RS485 CABLE CONNECTION DIAGRAM...................................................... 22

FIGURE 7 – NON-REMOVABLE STICKER ................................................................... 42

FIGURE 8 – LEAD WIRE SEAL / HARD PLASTIC STICKER ................................................. 42

FIGURE 9 - WALL MOUNT MODEL, SEALING INSTRUCTIONS............................................. 42

FIGURE 10 – DESKTOP MODEL, SEALING WITH NON-REMOVABLE STICKER ........................... 43

FIGURE 11 – DESKTOP MODEL, SEALING WITH LEAD SEAL / NON-REMOVABLE STICKER ............ 44

FIGURE 12 – DIGITAL OUTPUT AND TILT SWITCH CONNECTION DIAGRAM............................. 65

Legal Notice

VT200/220 Technical Manual, Rev 1.00.01 vii Doc # TM-VT200/220-EN

Legal Notice

This manual contains information that is proprietary to Vishay Transducers Ltd.
(“VT”). No part of this publication may be reproduced in any form whatsoever
without prior written approval by VT.

Right, title and interest, all information, copyrights, patents, know-how, trade
secrets and other intellectual property or other proprietary rights relating to this
manual and to the VT200 and/or VT220 (“the Product”), and any software
components contained therein, are proprietary products of VT protected under
international copyright law and shall be and remain solely with VT.

VT200 and VT220 are registered trademarks of VT. No right, license, or interest to
such trademark is granted hereunder, and you agree that no such right, license, or
interest shall be asserted by you with respect to such trademark.

You shall not copy, reverse compile or reverse assemble all or any portion of the
Manual or the Product. You are prohibited from, and shall not, directly or indirectly,
develop, market, distribute, license, or sell any product that supports substantially
similar functionality as the Product, based on or derived in any way from the
Product. Your undertaking in this paragraph shall survive the termination of this
Agreement.

This Agreement is effective upon your opening of the packaging of the Product,
and shall continue until terminated. VT may terminate this Agreement upon the
breach by you of any term hereof. Upon such termination by VT, you agree to
return to VT the Product and all copies and portions thereof. For further
information contact VT or your local distributor.

Warranty

VT200/220 Technical Manual, Rev 1.00.01 viii Doc # TM-VT200/220-EN

Warranty

Vishay Transducers warrants all instruments it manufactures to be free from defect in materials and factory workmanship, and agrees to

repair or replace any instrument that fails to perform as sp ecified within one year after date of shipment. Coverage of computers,

cameras, rechargeable batteries, and similar items, sold in conjunction with equipment manufactured by Vishay Transducers and bearing

the identifying name of another company, is limited under this warranty to one year after the date of shipment. The warranty on non-

rechargeable batteries and similar consumable items is li mited to the delivery of goods free from defects in materials and factory

workmanship.

This warranty shall not apply to any instrument that has been repaired, worked on or altered by persons unauthorized by Vishay

Transducers in such a manner as to injure, in our sole judgment, the performance, stability, or reliability of the instrument; subjected to

misuse, negligence or accident; or connected, installed, adjusted, or used otherwise than in accordance with the instructions furnished by

us.

At no charge, we will repair, at our plant, or an authorized repair station, or at our option, replace any of our products found to be

defective under this Warranty.

This Warranty is in lieu of any other warranties, expressed or implied, including any implied warranties of merchantability or fitness for a particular
purpose. There are no warranties which extend beyond the description on the face hereof, Purchaser acknowledges that no salesman, agent,
employee or other person has made any such presentations or warranties or otherwise assumed for Vishay Transducers any liability in connection
with the sale of any goods to the purchase. Buyer hereby waives all rights Buyer may have arising out of any breach of contract or breach of
warranty on the part of Vishay Transducers, to any incidental or consequential damages, including but not limited to damages to property,
damages for injury to the person, damages for loss of use, loss of time, loss of profits or income, or loss resulting from personal injury.

Some states do not allow the exclusion or limitation of incidental or consequential damages for consumer products, so the above

limitations or exclusions may not apply to you.

The Purchaser agrees that the Purchaser is responsible for notifying any subsequent Buyer of goods manufactured by Vishay Transducers

of the warranty provisions, limitations, exclusions and disclaimers stated herein, prior to the time any such goods are purchased by such

Buyer, and the Purchaser hereby agrees to indemnify and hold Vishay Transducers harmless from any claim asserted against or liability

imposed on Vishay Transducers occasioned by the failure of the Purchaser to so noti fy such Buyer. This provision is not intended to afford

subsequent Purchasers any warranties or rights not expressl y granted to such subsequent Purchasers under the law.

Vishay Transducers reserves the right to make any changes in the design or construction of its instruments at any time, without incurring

any obligation to make any change whatever in units previously delivered. Vishay Transducers’ sole liabilities, and Buyer’s sole remedies,

under this agreement shall be limited to the purchase price, or at our sole discretion, to the repair or replacement of any instrument that

proves, upon examination, to be defective, when returned to our factory, transportation prepaid by the Buyer, within the applicable period

of time from the date of original shipment. Re turn transportation charges of repaired or replacement instruments under warranty will be

prepaid by Vishay Transducers.

Vishay Transducers is solely a manufacturer and assumes no responsibility of any form for the accuracy or adequacy of any test results,

data, or conclusions which may result from the use of its equipment.

The manner in which the equipment is employed and the use to which the data and test results may be put are completely in the hands of

the Purchaser. Vishay Transducers shall in no way be liable for damages consequential or incidental to defects in any of its products.

This warranty constitutes the full understanding between the manufacturer and Buyer, and no terms, conditions, understanding or

agreement purporting to modify or vary the terms hereof shall be binding unless hereafter made in writing and signed by an authorized

official of Vishay Transducers.

Safety Instructions

VT200/220 Technical Manual, Rev 1.00.01 ix Doc # TM-VT200/220-EN

Safety Instructions

The following instructions serve as a general guide for the safe operation of the
VT200/220. This Technical Manual is intended for users of the Weight Indicator,
who are prohibited from installing, calibrating, setting up or servicing the product.
Only qualified and authorized service personnel should install the product, set it
up, calibrate it, or carry out adjustment, maintenance or repairs.

Safety Symbols

This symbol indicates potential safety hazards regarding product operation

or maintenance to operator or service personnel.

General Safety Practices

Do not touch or tamper with the power supply when the power cord is connected.
Line voltages may be present even when the product is powered off or a fuse is
blown.

Before working on equipment connected to power lines or to other devices, remove
jewelry or any other metallic object that may come into contact with energized
parts.

The product is intended to be grounded during normal use. Grounding is provided
by connecting the mains plug to a wall socket with a protective earth terminal. The
earth lug provided on the product should be connected to the protective earth at
all times, by a wire with a diameter of 18 AWG or wider.

Always make the ground connection first and disconnect it last. Do not connect
data cables to ungrounded equipment. Make sure that all other cables are
disconnected before disconnecting the ground.

Special Safety Warnings

Welding on or in the vicinity of the equipment is strictly prohibited.

Use reliable lightening conductors to prevent static loads caused by

thunderstorms.

Safety Instructions

VT200/220 Technical Manual, Rev 1.00.01 x Doc # TM-VT200/220-EN

Connection of AC Mains

Make sure that the electrical installation complies with local codes. Always connect
the AC plug to a wall socket with a protective ground.

The maximum permissible current capability of the branch distribution circuit that
supplies power to the product is 16A. The circuit breaker in the building installation
should have high breaking capacity and must operate at short-circuit current
exceeding 35A.

Always connect the power cord first to the equipment and then to the wall socket.
If the power cord cannot be readily disconnected in case of emergency, make sure
that a readily accessible circuit breaker or emergency switch is installed in the
building.

Operating Environment

Ambient

Temperature

Storage temperature: -10C to +70C (14F to 158F).
Operating temperature: -10C to +40C (14F to 104F).

Humidity 40% to 90% RH (non condensing).

Vibration Severe vibration can affect the accuracy of weighing and damage components.

Air The air surrounding the product should be dust-free and should not contain

corrosive gasses or other materials that could adversely effect the product.

Electromagnetic

Fields

Heavy electrical equipment should not be installed near to the weighing
apparatus.

Incoming and

Outgoing Signals

Relays and contacts connected to the equipment must have reliable and
effective interference suppression. This also applies to other equipment within
3 meters of the equipment.

Declaration of Conformity

VT200/220 Technical Manual, Rev 1.00.01 xi Doc # TM-VT200/220-EN

Declaration of Conformity

Non-Automatic Weighing Instrument (III)

Manufacturer VISHAY Transducers

Type/Model VT200, VT220

EC Type Approval

Certificate Number

DK 0199.62

Corresponds to the production model described in the EC Type Approval Certificate
and to the requirements of the Council Directive 90/384/EEC as amended and to
the requirements of the following EC Directives:

EN 45501:1994, The Metrological Aspects of Non-Automatic Weighing Machines.

EN 55022:1987, Limits and Methods of Measurement of Radio Interference
Characteristics of Information Technology Equipment.

EN 60950:1992, Safety of Information Technology Equipment.

Date

April 30, 2004

Signature

Benny Shaya, Director R&D/Operations Instruments

Being the responsible person employed and appointed by Vishay Transducers.

About this Document

VT200/220 Technical Manual, Rev 1.00.01 xii Doc # TM-VT200/220-EN

About this Document

This document provides technical information for the VT200/220 Weight Indicator.
It is intended for technical staff tasked with installing, setting up and configuring
the indicator, as well as troubleshooting and servicing.

For information on how to use the products, see the VT200/220 User’s Guide.

Chapters and Their Contents

1 Technical

Specifications

General indicator specifications; analog input/output
specs; and digital input/output specs.

Pg. 13

2 Installation Installing and connecting the indicator. Pg. 16

3 Display, Keys and

Menus

Using the VT200/220 display, keypad, function menu
and setup menus.

Pg. 20

4 Calibration Performing standard weight calibration and electronic

calibration.

Pg. 28

5 Setting Operating

Parameters

General parameters in the SETUP 1 and PAR menus.

Pg. 33

6 Setting up Serial

Communication

Setting up communication with printers, host PCs and
other external devices.

Pg. 38

7 Outputs and Digital

Input

Connecting and using the digital input (tilt switch),
digital outputs (setpoints) and analog output.

Pg. 45

8 Service Operations

and Testing

How to set a PIN number, set date and time, view load
cell mV, test the keypad and display, and perform
other service and testing operations.

Pg. 47

9 Troubleshooting and

Service

Errors, causes and suggested corrective actions;
maintenance and service instructions.

Pg. 50

About this Document

VT200/220 Technical Manual, Rev 1.00.01 xiii Doc # TM-VT200/220-EN

Style Conventions

Verdana

Regular text.

Arial Bold

Commands, keys and other parts of the user interface.

Arial Italics

Names of classes, methods, arguments, exceptions, properties, etc. Also used
for special terms, the first time they appear.

Monospace

Text displayed on the LCD or on a computer attached to the product.

Notes, which offer an additional explanation or a hint on how to overcome a
common problem.

Warnings, which indicate potential safety hazards regarding product operation
or maintenance to operator or service personnel.

Technical Specifications

General

VT200/220 Technical Manual, Rev 1.00.01 14 Doc # TM-VT200/220-EN

1 Technical Specifications

1.1 General

CPU Characteristics MCU 89C51RD, 64KB Flash ROM, 1KB RAM, 32KB serial EEPROM.

CPU real time clock is optional.

Communication • Serial port 1: RS232C Full duplex, 1200-9600 baud rate, 8 data bits/no parity

or 7 data bits/odd or even parity. Printer, weight output.

• Serial port 2: (optional): RS232 or RS485 half duplex, 2400-57600 baud rate,

8 data bits/even or no parity or 7 data bits/even parity.

Master/slave protocol, EDP output, selectable weight output.

Display • VT200: 6 digit ,7 segment red LED (20mm height) display.

• VT220: Black LCD (16mm height) display.

Annunciators Net, No Motion, Minus sign, Zero, Range 1 and 2.

Keyboard 8-key membrane type with tactile feedback.

Approvals EU type approval 10,000 divisions, DK 0199.62.

Accuracy class III.

Resolution Selectable up to 99,000 dd (in accordance with regulations).

Max tare effect Full scale (100%).

Auto Zero track Off or 0.5 dd, setup-selectable.

Weight digits 4, 5 or 6.

Weight steps 1, 2, 5, 10, 20, 50, 100, 200.

Digital filter FIR automatically adjusted to conversion speed, plus post filtering (rolling

average of 1, 2, 4, 8, 16, 32 samples).

Calibration methods Dead load, span and scale parameters via keyboard commands. Calibration can

be performed either by weighing or by entering load cell mV values.

Self diagnostics Hardware and software – MCU watchdog.

Memory failure and I/O failure – program check.

Technical Specifications

Analog Input

VT200/220 Technical Manual, Rev 1.00.01 15 Doc # TM-VT200/220-EN

1.2 Analog Input

A second analog input may be added as an option, if no analog output is
needed. The same specifications apply. Second analog input is not supporting
continuous weight output AND format see 6.3.2

Load cell excitation ±5V switched polarity or +5VDC with sense.

Connection 6-wire technique. Max 10 load cells 350 Ohm each.

Signal range -0.25 to 1.75mV/V (Gain=10), -0.25 to 3.75mV/V (Gain=20).
Sensitivity • Approved scales: min 0.4µV / digit (VSI).

• Non-approved scaled: min 0.1µV / digit.

Input amplifier Input noise 0.3µVp-p, input bias current 10nA typical.

A/D Converter Sigma delta 550,000 internal counts max. Conversion speed: 3, 7, 14, 28, 57,

70Hz (selectable).

Linearity Within 0.002% of full scale.

Span temp coefficient

≤2ppm/°C.

Zero temp coefficient

≤2ppm/°C.

Long-term stability 0.005% of full scale per year.

1.3 Analog Output (Optional)

If no second analog input (See 1.2 above) is needed, an analog output may be
added. Analog Output is powered by an external 24VDC (See section 7.1.2 for
specification).

Current or voltage

Selected via jumper JP1 on printed circuit board 761 (see section 7.4).

Current output 0-20 mA or 4-20 mA. Max load resistance 1KΩ (line + termination).

Voltage output 0.02-10V. Min load resistance 1KΩ.
Resolution • Internal: 16 bits.

• External: 16 bits, or in accordance with regulation.

Linearity Better than 0.01% of FSR.

Thermal stability 50ppm/°C typical.

Short-circuit

protection

25mA indefinite duration.

Technical Specifications

Digital Input

VT200/220 Technical Manual, Rev 1.00.01 16 Doc # TM-VT200/220-EN

1.4 Digital Input

Input voltage 9-24VDC, positive common, optoisolated to 2.5KV.

Input resistance 3.3KΩ.

On delay 2msec max.

Off delay 2msec max.

1.5 Digital Outputs

Output voltage 24VDC ±10% transistor (SOURCE) darlington, positive common.

Max current 100mA, leakage current 100µA.

Max off-state voltage 30VDC.

On delay 2msec max.

Off dlay 2msec.

Installation

Site Requirements

VT200/220 Technical Manual, Rev 1.00.01 17 Doc # TM-VT200/220-EN

2 Installation

2.1 Site Requirements

The mounting location must be a stable surface, free of vibrations, heat or humidity.
Avoid direct sunlight on the front of the instrument. The unit should be placed at the
correct height to allow easy reading of the display and convenient keyboard
operation.

2.2 Mounting the Indicator

2.2.1 Desktop Model (Aluminum Enclosure)

Front and rear views of the unit are shown in Figure 1.

Figure 1 – Desktop model, front and rear view

Installation

Mounting the Indicator

VT200/220 Technical Manual, Rev 1.00.01 18 Doc # TM-VT200/220-EN

All connections to the instrument are made through the rear panel connectors. Strain­relief clamps should be used. The shield should be connected to the metal frame of
the connector.

2.2.2 Wall-Mount Model (Stainless Steel Enclosure)

Front and rear views of the unit are shown in Figure 2.

Figure 2 – Wall-mount model, front and rear view

To connect the indicator to the stainless steel wall-mount:

1. Remove the rear panel and lift it carefully.

2. Insert the cables via the cable glands. Strip and connect the cables according to
the schematic diagram in Appendix A.

3. Connect the cable shield between the plastic part and the metal case of the cable
glands, or to the screws supporting the PCBs.

4. Re-install the rear panel.

Installation

Connecting Load Cells

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2.3 Connecting Load Cells

2.3.1 Desktop Model (Aluminum Enclosure)

Use 6 x 0.5mm2 shielded cable for load cell connections. Connect the load cells
according to the diagram below.

Figure 3 – Load cell connec tion diagram for wall-mou nt model

DB9 fem

1 2 3 4 5 6 7
+ - I1 CI O1 O2 +Co

LOAD CELL 1

Pin Description

1 Excitation (-)

2 Sense (-)

3 Sense (+)

4 Excitation (+)

5 Signal (-)

6 Signal (+)

D-Type Metal Case
(Shield)

7

8

Calibration

Enable

COM 2

COM 1

Load Cell 2

or

Analog Outp ut

Load Cell 1

DB9 male

DB15

fem/male

DB15 fem

L

OAD CELL 2 (DB15 F)

Pin Description

1 Excitation (-)

2 Sense (-)

3 Sense (+)

4 Excitation (+)

5 Signal (-)

6 Signal (+)

D-Type Metal Case
(Shield)

Installation

Connecting Load Cells

VT200/220 Technical Manual, Rev 1.00.01 20 Doc # TM-VT200/220-EN

2.3.2 Wall-Mount Model (Stainless Steel)

Use 6 x 0.5 mm2 shielded cable for load cell connections. Connect the load cells
according to the diagram below.

Figure 4 – Load cell connection diagram for stainless-steel model

2.3.3 Load Cell Operating Parameters

The load cell utilization ranges are listed in the table below.

Excitation 5VDC, fixed or alternating polarity (SETUP selectable) for 10 load cells of 350Ω

each.

Gain / input ranges • For load cell output of 10mV, gain permitted is between -0.25 and 1.75mV/V.

• For load cell output of 20mV, gain permitted is between -0.25 and 3.75mV/V.

The load cells must be chosen so that the input signal to the controller is at
least 0.4µV per scale increment. For load cell output less than 0.4µV/digit, the
controller will still be stable but the full temperature range accuracy is not
guaranteed.

Do not run signal cables together with power cables. Connect the shielding only

where indicated in the drawing. Never use a Megger to check wiring. Never use
plastic insulating tape on load cell connections.

JP1

+
POWER
¯

+
INPUT
¯

OUT1
OUT2

COM

TX

RX

SGND

SHIELD
+ SIG
– SIG
+ EX
+ SEN

- SEN

- EX

PCB 801

PCB
765

SHLD
+SIG
–SIG
+EX
+SEN
–SEN
–EX

7 6 5

4

3 2

1

7 6 5

4

3 2

1

7 6 5

4

3 2

1

3

2

1

Installation

Serial Connections

VT200/220 Technical Manual, Rev 1.00.01 21 Doc # TM-VT200/220-EN

2.4 Serial Connections

 For RS232C connection, use 3 x 0.34 mm

2

shielded cable.

 For RS485 connection, use 2 x 0.34 mm

2

shielded twisted pair cable.

2.4.1 Printer and PC Cables

Figure 5 – Printer and PC cables connection diagram

Only the aluminum enclosure has a DB9 connector. The steel enclosure has a

screw terminal on the internal card, to which you should attach the individual
wires.

2.4.2 RS485 Cable Connections

The terminal block on the RS485 board enables connecting two pairs of wires (A, B):

 One wire pair for connecting the incoming cable.
 A second wire pair for a daisy-chain connection to the next unit on the RS485

bus.

Max 15m

Max 15m

T

o

PC

DB25 Female

Printer DB25 Male

Printer DB25 Male

DB9

Metal

Case

3

5

2

3

5

2

DB9

fem

DB9

Metal

Case

DB9

fem

Shield

TX GRN

GND BRN

DTR WHI

Shield

TX GRN

GND BRN

DTR WHI

GRN RX

BRN GND

WHI

DTR

GRN RX

BRN GND

WHI

DTR

RX

GND

T

X

RX

GND

DTR

3

7

20

2

5

3

3

7

2

3

7

2

OR

To

Serial

Printer

DB9 Female OR

Installation

Connecting Power

VT200/220 Technical Manual, Rev 1.00.01 22 Doc # TM-VT200/220-EN

Figure 6 – RS485 cable connection diagram

2.5 Connecting Power

VT200/220 indicators are powered from 85-265 VAC, via internal power supply board.
The mains power cable is supplied with the instrument.

Power should be isolated from other data processing equipment.

Verify that the AC power socket outlet is properly protected. For optimum EMC
performance, keep the length of cable shielding inside the enclosure as short as
possible.

Chassis
Earth

470R

150R

470

R

A

B

RT

+V

White

Shield

Slave #1

(

VT x00)

Slave #2

(

VT x00)

(Up to 30

slaves)

…

Slave #30

(VT x00)

A

B A B A B

RT

120R

Termination
Resistor

2X0.34mm2 twisted pair shielded

Max cable length: 1000m

Network
Biasing
Resistors

Master

Display, Keys and Menus

The Display

VT200/220 Technical Manual, Rev 1.00.01 23 Doc # TM-VT200/220-EN

3 Display, Keys and Menus

The VT200/220 front panel can be divided into three areas:
 A six-digit display (LED for VT200, LCD for VT220) that shows weight

information, status information, and the names of menus and functions.

 A keypad with eight keys, allows you to turn the unit on and off, perform the

most common functions, and access a function menu with more advanced
options.

 The lower area shows information about the maker, model and certified limits of

your indicator.

3.1 The Display

The VT200 has an LED display, while VT220 model has an LCD display. Both models
have six digits, used mainly to display weight information.

To the bottom and right of the digits, small dots may appear next to distinctly-shaped
status annunciators. These dots provide status information, such as whether the scale
has been tared or not.

Display, Keys and Menus

The Display

VT200/220 Technical Manual, Rev 1.00.01 24 Doc # TM-VT200/220-EN

3.1.1 Status Annunciators

At the bottom and right of the display are several status annunciators. A dot or a light
shows up next to these to indicate the current status of the scale or indicator. Status
annunciators are often important to understand what is being shown on the display.

Stable

Active – the scale is stable (necessary for ZERO, TARE and PRINT).
Inactive – the scale is not stable.

Center of Zero Active – the current weight is at center of zero.

Inactive – the scale is above or below center of zero.

Tared Active – the preset tare value is now being displayed on the screen.

Net Weight Active – the display is showing net weight.

Inactive – the display is showing gross weight.

Scale 1 only Active – the indicator is set to scale 1. All operations relate to scale 1.*

Scale 2 only Active – the indicator is set to scale 2. All operations relate to scale 2.*

Scale 1 and

Scale 2

Active (both) – the indicator is set to the two scales combined. All operations
relate to the sum of the two weights.*

W1 The scale is currently in weight range 1.

W2 The scale is currently in weight range 2.

* These are not relevant if you only have one scale connected to the indicator.

3.1.2 Common Messages Shown on the Display

Message Type Meaning

352.0 Weight of the item on the scale.

24509 Number of units on the scale.

319.0

(

active)

Net weight, or number of units calculated after subtracting the container’s weight.

∩∩∩∩∩∩

Over range. The item on the scale weighs more than the maximum capacity of the
scale, or the load cell signal is too high.

UUUUUU

Under range. The item on the scale weighs less than the minimum capacity of the
scale, or the load cell signal is too low.

Fn 06 Function menu (see chapter 2). To perform the function currently showing, press

PRINT (

). To cancel press ZERO ( )

Err15 An error has occurred (see chapter 9). In some cases, you can ignore the error and

continue working by pressing ZERO (

)

XXXXXX Software model number, shown during the power-up sequence.

XXXXXX Software version issue date, shown during the power-up sequence.

888888 Display self-test, performed during the power-up sequence.

Display, Keys and Menus

Front Panel Keys

VT200/220 Technical Manual, Rev 1.00.01 25 Doc # TM-VT200/220-EN

ZeRO Automatic or manual zeroing is being performed.

Other types of messages may be shown when you perform specific operations, such
as editing the tare value or displaying battery status.

3.2 Front Panel Keys

The keys on the front panel serve two functions:

 Performing operations, indicated in black at the center of the key.
 Navigating menus and entering numeric information. Each key’s navigation

function is indicated in white at its bottom-right corner.

3.2.1 Using Keys to Perform Operations

Key Description Related operations

Toggles between scale 1, scale 2 and the sum of both
scales (if two scales are connected).

Two-scale operation

Press once to tare the scale*. Press again to view gross
weight.

Taring using current weight

Press to manually enter a tare value. Use u (P.TARE) to
change the current digit, then t (TARE) to move to the
next digit. When you are done, press  (PRINT). To cancel
and view gross weight, press ZERO.

Taring by entering weight

When you press this key, the current weight* is printed
to the printer and/or output to an attached computer, and
added to the accumulated total.

Printing, outputting to computer

Press once to view the sum of all accumulated weights.
Press again to see the number of weights accumulated.
Press again to view the current weight.

Accumulated total

Press to switch between Weighing Mode and Counting
Mode. Counting Mode shows the number of units on the
scale. Weighing Mode shows weight.

Counting pieces, weighing

Press to turn the indicator on, or to switch it off when it is
running.

Starting the indicator

* This operation cannot be performed if the weight is not stable.

Display, Keys and Menus

The Function Menu

VT200/220 Technical Manual, Rev 1.00.01 26 Doc # TM-VT200/220-EN

3.2.2 Using Keys to Navigate and Enter Information

Key Description

Escape. Cancels the current operation, exits a menu or cancels tare (if active).

Next. When editing multiple digits, moves to the next digit. Only press this key once you have

finished editing the current (flashing) digit.

Function menu. Press this key for three seconds to access the function menu.

Up. Increments (adds one) to the current digit, or moves to the previous menu option in setup.

Enter. Confirms the current operation or the information entered.

Down. Moves to the next menu option in setup.

3.2.3 Editing Multiple Digits

To edit multiple digits shown on the display:

1. Take note of the flashing digit. This is the digit you are currently editing. Press u
(P.TARE) to increment this digit, until it shows the number you need.

2. Press t (TARE) to move to the next digit on the right. It should start flashing.

3. Press u (P.TARE) to increment the flashing digit, until it shows the number you
need.

4. Repeat steps 2 and 3 until you have edited the last digit.

5. Press  (PRINT) to confirm the number you entered.

3.3 The Function Menu

The function menu allows you to perform advanced operations like high-resolution
weighing, selecting printing format and viewing alibi memory.

It is accessed by pressing the TARE (

) button for three seconds, while in Weighing

Mode (you cannot access the function menu from Counting Mode).

This subchapter explains how to use the menu and provides a summary of its
functions. All operations are explained in more detail further in this document.

Display, Keys and Menus

The Function Menu

VT200/220 Technical Manual, Rev 1.00.01 27 Doc # TM-VT200/220-EN

3.3.1 Using the Function Menu

To access a function on the function menu:

1. Press TARE (

) on the front panel, and keep it pressed for around three seconds.

The display shows Fn 00. The left digit should be flashing.

2. Check the number of the function you need (refer to Function Summary list below).
If the function you need is between 01 and 09, skip to step 4.

3. Press u (P.TARE) to increment the left-hand digit (tens). Keep pressing it until it
matches the function you need. For example, if you need function 43, press u four
times. The left digit should become 4.

4. Press t (TARE) to move to the right-hand digit (units). This digit should start
flashing.

5. Press u (P.TARE) to increment the right-hand digit (tens). Keep pressing it until it
matches the function you need. For example, if you need function 43, press u three
times. Assuming you entered 4 for the left-hand digit, the display should now show
Fn 43.

6. Press  (PRINT) to confirm. The operation associated with the function number you
entered is performed.

3.3.2 Function Summary

Function Description Refer to

01

Edit setpoints. The display shows SEtP 1 briefly, then the current setpoint
value.

Use u (P.TARE) to change the current digit, then t (TARE) to move to the
next digit.

When you are done, press  (PRINT).

The display shows SEtP 2 briefly, then the current setpoint value.

Edit the second setpoint value using the same procedure.

Chapter 7

02 Display battery status. The display shows the current battery charge, as a

percentage of total capacity.

Display, Keys and Menus

The Function Menu

VT200/220 Technical Manual, Rev 1.00.01 28 Doc # TM-VT200/220-EN

Function Description Refer to

05 Set date, time and serial number. A battery-backed RAM and the Real

Time Clock (RTC) option need to be installed to enable setting time.

This function depends on the setup parameter 1.6 (1=enabled; 0=disabled).
The date format is specified in setup parameter 1.4 (DDMMYY or MMDDYY).

Use u (P.TARE) to change the current digit, then t (TARE) to move to the
next digit. When you are done, press  (PRINT).

The display now shows HHmmSS (hours, minutes, seconds); edit the current
time and confirm.

The display shows the current alibi memory serial number, also used on the
printed ticket. You can edit this number, then press  (PRINT).

06 High resolution weighing. Increases the accuracy of the displayed weight

by a factor of ten, the smallest item is limited to 1 display division.

When this function is enabled, the display flashes and you may not print.

Press ZERO (

) to cancel and return to normal resolution.

User’s Guide,
section 4.6

20 Disable printer output. Prevents the indicator from printing when you

press PRINT (

), even if a printer is connected.

21 Set print format: Ticket. Shows date, time and weight, as follows:

07-10-02 00:00:00 N:00001

GROSS:<00.500 kg>

Section 6.4

22 Set print format: Continuous output. Used for external display or PC.

There are 2 continuous output formats LEO and AND see 6.3.2

Section 6.4

23 Set print format: Net/gross. Shows either net or gross weight,

depending what is shown on the display.

Gross weight: GROSS: <00.500 kg>

Net weight: NET: <01.000 kg>

Section 6.4

24 Set print format: 3-line detailed weight. Shows gross, tare and net

weight in three separate lines as follows:

GROSS : 01.100 kg
TARE : 00.100 kg
NET : <01.000 kg>

Section 6.4

25 Set print format: 3-line detailed weight large. Same as function 24,

except the information is printed in quadruple-size characters.

Section 6.4

Display, Keys and Menus

The Function Menu

VT200/220 Technical Manual, Rev 1.00.01 29 Doc # TM-VT200/220-EN

Function Description Refer to

26 Set print format: 1-line detailed weight. Shows serial number, gross,

tare and net in one line as follows:

00002 01.100kgG 00.100kgT 01.000kgN

Section 6.4

27 Set print format: Displayed weight. The weight is shown on the display

(regardless of mode).

Section 6.4

28 Set print format: 1-line weight and serial.

00001 00.500 kg

Section 6.4

29 Set print format: On demand. Weight data (either net or gross,

depending what is shown on the display) is transmitted every time a
character (set in setup parameter 3.t) is received from a connected
peripheral. The format is as follows:

Gross weight: GROSS:<00.500 kg>

Net weight: NET:<01.000 kg>

Section 6.4

30 Set print format: Label. Prints a label showing gross weight, tare and net

weight. The format is as follows:

GROSS TARE NET

00.500kg 00.100kg 01.000kg

Section 6.4

40 Changing PIN. Used to change the current Personal Identification Number

that enables access to the calibration procedure.

Chapter 8

41 Download custom print format 1. Downloads a custom print format from

a PC. Suitable for operations in gross mode.

Section 6.5.1

42 Download custom print format 2. Downloads a custom print format from

a PC. Suitable for operations in Tare mode.

Section 6.5.2

43 Repeat last printout. Prints an exact copy of the last printout. User’s Guide,

section 6.1.1

48 Check calibration seal. Shows the calibration counter, and the status of

the physical calibration seal (if used).

49 Setup and calibration. Chapter 4

50 Piece count. Switches between Counting Mode and Weighing Mode. Same

as pressing Pcs (

).

User’s Guide,
chapter 5

51

Set unit weight for counting, by weighing. The display shows XX. Enter
the number of units currently on the scale and press PRINT (

). The

indicator records the average unit weight and uses it for counting.

User’s Guide,
section 5.2

Display, Keys and Menus

The Function Menu

VT200/220 Technical Manual, Rev 1.00.01 30 Doc # TM-VT200/220-EN

Function Description Refer to

52 Set unit weight for counting, by entering weight.

The display shows XXXXXX. Enter a unit weight , using u (P.TARE) to change
the current digit, then t (TARE) to move to the next digit.

When you are done, press  (PRINT). The display shows the number of units
on the scale, using the new unit weight.

User’s Guide,
section 5.3

53 Set unit weight by weighing sample, and view unit weight.

The display shows XX. Enter the number of units currently on the scale and
press PRINT (

). The average unit weight is shown on the display.

The indicator records the average unit weight and uses it for counting.

User’s Guide,
section 5.2

55 View an alibi memory record/print ten records.

Set setup parameter 2.t to 13 to enable Alibi printing.

Press  (PRINT). The display shows n 0000 (the Alibi serial number).

Choose the required Alibi number . To view the gross weight of an Alibi
record, press  (PRINT).

When you are done, press  (PRINT). The display shows the memory record
you requested. If you want to print this and the next nine records, press 
(PRINT) again.

Users Guide,
section 7.1

56 Print all alibi memory records. Prints the entire contents of alibi memory,

including empty or corrupted locations.

Set setup parameter 2.t to 13 to enable Alibi printing.

The entire alibi memory will be printed in the format (gross weight):

SN 0001 123.45

Press ZERO (

) to stop printing.

Users Guide,
section 7.2

57 Checksum Test. Performs a checksum on each alibi memory, ensuring it is

not corrupted. An alibi memory serial number will be displayed in the format
n 0000.

If all records are okay, PASS is displayed briefly. If an error is found, Err 57
is displayed.

Press ZERO (

) to cancel the operation midway.

80 Load-cell mV meter. The actual mV output of the scale sensors is

displayed.

Chapter 8

81 Display internal A/D count. The analog-to-digital converter internal count

is displayed.

Chapter 8

82 Display version and date. Chapter 8

Display, Keys and Menus

Setup Menus

VT200/220 Technical Manual, Rev 1.00.01 31 Doc # TM-VT200/220-EN

Function Description Refer to

85 Analog output test. Chapter 8

86 ROM - RAM test. A validity check is performed on system ROM and RAM. Chapter 8

90 Display segment test. All digits go through 0-9 display routine in

sequence, after which the character set is displayed.

Chapter 8

91 Keyboard test. Display blanks. The scan code of any key pressed is shown

on the display.

Chapter 8

93 Setpoint input/output test. The display shows the status of the digital

input and outputs.

Chapter 8

94 Print buffer test. An ASCII file (30h-7Fh) is output to the printer port with

error control.

Chapter 8

96 Display characters received by COM ports. Any character received by

COM 1 is echoed and displayed in ASCII hex on digits 1 and 2. Any
character received by COM 2 is echoed and displayed in ASCII hex on digits
5 and 6.

Chapter 8

3.4 Setup Menus

3.4.1 Accessing and Navigating Setup Menus

To enter the setup and calibration menus, either execute function 49, or follow the
procedure below.

To enter the setup and calibration menus:

1. Turn on the unit.

2. During the self-test routine, while all display segments are on (all 8 on the
display), press PRINT (

) momentarily, followed by TARE ( ) momentarily.

3. If the PIN code is activated, the display shows ACCESS briefly. Type the PIN and
then press PRINT (

) to get into the calibration menu. The display shows SETUP.

4. Use TOTAL (

) to step through the menus.

The menus displayed depend on whether jumper JP1 is in the sealed position or

not (see section 4.4). If it is sealed, the following menus are hidden: Par, CAL,
INIT and A-CAL.

5. To enter a menu, press PRINT ( ).

Display, Keys and Menus

Setup Menus

VT200/220 Technical Manual, Rev 1.00.01 32 Doc # TM-VT200/220-EN

3.4.2 Menu Structure

Main menu Submenu Description

SETUP SETUP 1

General scale parameters.

SETUP 2

Serial port 1 parameters.

SETUP 3

Serial port 2 parameters.

SETUP 4

Tilt Switch parameters.

SETUP 5

Setpoint parameters.

SETUP 6

Lock keys.

Par 0.P, 1.P, 2.P, 3.P, 4.P, 5.P, 6.P, 7.P

General scale parameters with multiple values.

8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 8.8, 8.9,

8.A, 8.b

General scale parameters with two possible
values.

CAL S-CAL (ZEro, SPAN)

Standard-weights calibration dialog.

E-CAL (ZEro, SPAN)

Electronic calibration dialog.

STORE -

Permanently saves calibration data and exits
setup.

INIT -

Resets scale parameters, configuration and
calibration data to manufacturer defaults.

A-CAL A.1, A.2, A.3, A.4, A.5, A.6, A.7, A.8

D/A analog output parameters.

3.4.3 Parameter Summary

SETUP > SETUP 1 (General Operating Parameters)

Par. Description Values

1.1 Enable totalizer. YES enables the totalizer. NO disables it. 0=NO 1=YES

1.4 Date format. Sets the date format in all printing formats. 0=d-m-y 1=m-d-y

1.6 Enable real-time clock and battery-backed RAM (optional).
If the battery-backed RAM option is installed, this parameter enables
saving date, time and the accumulated total in persistent memory.

You must enable this parameter to be able to set date and time.

0=NO 1=YES

1.8 Enable function menu.

YES specifies that users can access the function menu by pressing
TARE for 3 seconds.

NO specifies that users should not be able to access the function
menu.

0=NO 1=YES

Display, Keys and Menus

Setup Menus

VT200/220 Technical Manual, Rev 1.00.01 33 Doc # TM-VT200/220-EN

Par. Description Values

1.t Auto power off. Time for the unit to switch off if the scale is zero. 00 - 99 minutes
00=Disabled

1.E Number of samples in counting. 5 - 99

SETUP > SETUP 2 (Com 1 Settings)

Par Description Values

2.t Print type. Selects current print

format from ten default formats and
two custom formats, or disables printer
port.

00=port disabled; 01=ticket; 02=weight output;
03=single line; 04=ticket; 05=ticket; 06=single line;
07=weight; 08=serial and weight; 09=demand;
10=label; 13=alibi memory; 20=custom print formats
(see section 6.5); 22=continuous weight output
w/dual scale

2.c Master/Slave protocol address. 60-90

2.C Print-on-demand character. 65-90

2.L Page length. Ticket length, in

linefeeds.

2.r Paper reverse. Number of reverse

linefeeds before printout.

2.A Left margin. Number of spaces from

left margin.

2.F Page header. Number of linefeeds

before printout.

2.E Line termination. 0=LF 1=CRLF 2=LFCR

2.1 Printer model. 0=FANFOLD(like Epson EP-FX or similar serial printer)

1=SLIP(like Epson TM-295)

2.2 Continuous weight output format LEO or AND

2.3 Print below minimum capacity. 0=NO 1=YES

2.4 (Reserved for future use)

2.5 (Reserved for future use)

2.6 Wait unload. 0=NO 1=YES

2.7 Printer error control. Set to 0 for

communication with a PC.

0=NO 1=YES

Display, Keys and Menus

Setup Menus

VT200/220 Technical Manual, Rev 1.00.01 34 Doc # TM-VT200/220-EN

Par Description Values

2.8 Operator print type change (Fn 20-

30).

0=NO 1=YES

2.d Data bits/Parity serial channel 1 N8 = 8 Data bits/no parity, 07 = 7 Data bits/odd
parity, E7 = 7 Data bits/even parity,

2.11 1 line with date, time and indicated

weight

07-10-03 15:25:20 00500kgG

0=NO 1=YES

2.b Baud rate serial channel 1.

12= 1200 bps
24= 2400 bps

48 = 4800 bps

96 = 9600 bps

Above 2.2, 2.b and 2.d settings only suitable to set 2.t=0.2 for Continuous

Weight Output.

SETUP > SETUP 3 (Com 2 Settings)

Par. Description Values

3.t Instrument communication type. 00=disabled; 01 =continuous weight output;

02=EDP protocol output; 03=printer protocol output;
06=continuous weight w/tare output; 11=continuous
output with dual scale; 65-89=master/slave protocol
address

3.1 Timeout control. 0=NO 1=YES

3.2 Handshake. 0=NO 1=YES

3.3 Operator disable. 0=NO 1=YES

3.4 Host enquiry. 0=NO 1=YES

3.5 Remote keyboard commands. 0=NO 1=YES

3.6 Continuous weight output format LEO or AND

3.7 (Reserved for future use)

3.8 Debug. 0=NO 1=YES

3.b Baud rate serial number 2. 24 = 2400 bps

96 = 9600 bps
19 = 19200 bps
38 = 38400 bps
57 = 57600 bps

Display, Keys and Menus

Setup Menus

VT200/220 Technical Manual, Rev 1.00.01 35 Doc # TM-VT200/220-EN

3.d Data bits serial channel 2. 17 = 7 data bits / even parity
08 = 8 data bits / no parity
18 = 8 data bits / even parity

SETUP > SETUP 4 (Tilt Switch)

Par. Description Values

4.t Time delay, after closing the contact, for the display to lock. This is

also the time for the display to unlock after the contact is opened.

This parameter allows several special options, accessed by setting it
above 90:

• 91 – Tare scale on the rising edge of input. Setpoints always

enabled.

• 92 – Print on the rising edge of the input. Setpoints always

enabled.

• 93 – Setpoints active when input is high. Setpoints inactive when

input is low.

• 94 – Scale is tared at the rising edge of input. If taring is

successful, setpoints are activated. If input is low, setpoints are
inactive.

• 95 – When input is low, scale 1 is selected and displayed. When

input is high, scale 2 is selected and displayed.

• 96 – Scale is zeroed.

00=disabled

01-90 (x o.1 sec)

91-96=special options

SETUP > SETUP 5 (Setpoints)

Par. Description Values

5.1, 5.2 Setpoint 1 output. 5.1=0 and 5.2=0: normal

5.1=1 and 5.2=0: no motion

5.1=0 and 5.2=1: error

5.3, 5.4 Setpoint 2 output. 5.3=0 and 5.4=0: normal

5.3=1 and 5.4=0: zero

5.3=0 and 5.4=1: net

5.6 Net / gross for both setpoints. 0 = net

1 = gross

5.7 Normally open / closed for both setpoints. 0 = normally open

1 = normally closed

Display, Keys and Menus

Setup Menus

VT200/220 Technical Manual, Rev 1.00.01 36 Doc # TM-VT200/220-EN

SETUP > SETUP 6 (Lock Keys)

Par. Description Values

6.1 SCALE key. 1=lock

0=unlock

6.2 ZERO key. 1=lock

0=unlock

6.3 TARE key 1=lock

0=unlock

6.4 PRESET key. 1=lock

0=unlock

6.5 PRINT key. 1=lock

0=unlock

6.6 TOTAL key. 1=lock

0=unlock

6.7 PCS key. 1=lock

0=unlock

6.8 (Reserved for future use)

Display, Keys and Menus

Setup Menus

VT200/220 Technical Manual, Rev 1.00.01 37 Doc # TM-VT200/220-EN

ACAL (Analog Output)

Par. Description Values

A.1 Standard / custom zero and span.

0 specifies that the scale should output 0 mA at zero input and
20mA at maximum input (or 0V at zero and 10V at max).

1 opens a dialog, after A.8, that allows you to enter custom
zero and span values. Press PRINT to confirm; the display
shows 0 XX.XXX. Enter the D/A output at zero, in voltage or
mA, and press PRINT. The display shows F XX.XXXX. Enter the
D/A output at maximum input, in voltage or mA, and press
PRINT.

0 = Standard (20 mA max)

1 = User defined Zero and
Span

A.2 Normal or absolute AOUT mode. Specifies what happens

when the displayed weight is negative: analog output is either
zero (normal mode) or the absolute value of the negative
reading (absolute mode). For example, if the display shows -

100.00, and absolute mode is set, AOUT=10mA. In normal
mode, AOUT=0mA, regardless of the negative reading.

0= Normal

1 = Absolute

A.3 Error output level. Specifies whether scale errors should be

indicated as a low or high signal.

0 = Low (0 mA)

1 = High (24 mA)

A.4 Current / voltage. This parameter must correspond to the

hardware jumper, which defines whether output should be in
current or voltage (see section 7.4.1).

0 = Current

1 = Voltage

A.5 Net / gross. Specifies whether the indicator should always

output gross weight, or output net weight when tare is active.

0 = Net weight

1 = Gross weight

A.6 Effective range for current output. Sets the range to 0-

20mA or 4-20mA. Relevant only if A.4 and the hardware
jumper are set to current.

0 = 0-20 mA

1 = 4-20 mA

A.7 Resolution. Specifies whether output should be in high

resolution if the display is showing high resolution.

0 = Display

1 = Internal

A.8 Operation. Enables and disables the analog output. 0 = Disabled

1 = Enabled

Calibration

Calibration with Standard Weights (S-CAL)

VT200/220 Technical Manual, Rev 1.00.01 38 Doc # TM-VT200/220-EN

4 Calibration

Before you can calibrate the scale, you must ensure that jumper JP1 is not in the
sealed position (see section 4.4). There are two ways to calibrate the VT200/220:

 Standard weights calibration, in which you record the center of zero, and then

place a known weight on the scale and enter its weight (see section 4.1).

 Electronic calibration, in which you enter the mV value of the minimum and

maximum weight (see section 4.2).

Both of the above are performed using the CAL setup menu.

After calibrating the scale, you must store calibration data in persistent memory (see
section 4.3), and seal the calibration lock (see section 4.4).

If you have two scales connected to the indicator, each scale has its own

calibration parameters. All the parameters in the CAL menu relate to the
currently active scale. To calibrate scale 2, for instance, switch to scale 2 by
pressing SCALE ( ), and then access the CAL menu and perform calibration.

4.1 Calibration with Standard Weights (S-CAL)

Calibration with standard weights is done in two stages:
 Zero calibration, in which you take a weight measurement when there is nothing

on the scale (see section 4.1.1). This is also called dead-load adjustment.

 Span calibration, in which you place a known weight on the scale, and manually

enter its correct weight (see section 4.1.2).

You must perform both of the above for the scale to be calibrated properly.

After calibrating the scale, you must save the values in permanent memories by

entering the setup menus and selecting the STORE option (see section 4.3). It
is also advised to lock calibration (see section 4.4).

4.1.1 Zero (Dead-Load) Calibration

To perform zero calibration:

1. Enter the setup menus and use TOTAL (

) to scroll to the CAL menu. Press PRINT

(

) to enter the menu.

2. Press PRINT (

) to enter the S-CAL menu.

3. Press PRINT (

) to select the ZEro option (zero calibration).

4. The display shows E Scl. Clear the scale, and wait about 10 seconds.

Calibration

Electronic Calibration (E-CAL)

VT200/220 Technical Manual, Rev 1.00.01 39 Doc # TM-VT200/220-EN

5. Press PRINT (

) to record the zero position. The display counts down for about 10

seconds (50 measurements are taken and an average is calculated).

6. The display should now show 0. If the zero point is not accurate, press ZERO (

)

and go back to step 3.

4.1.2 Span Calibration

To perform span calibration:

1. Enter the setup menus and use TOTAL (

) to scroll to the CAL menu. Press PRINT

(

) to enter the menu.

2. Press PRINT (

) to enter the S-CAL menu.

3. Use TOTAL (

) to scroll to the SPAN option, and press PRINT ( ) to select it.

4. The display shows the maximum capacity of the scale. Enter the correct calibration

weight, using P.TARE ( ) to edit the current digit and TARE ( ) to move to the
next digit.

5. Press PRINT (

) to confirm the calibration weight.

6. The display shows Add Ld. Place the calibration weight on the scale, and wait about

10 seconds.

7. Press PRINT (

). The display counts down for about 10 seconds, and then shows

the calibration weight.

8. If the weight shown is not accurate, press ZERO (

) and go back to step 4.

4.2 Electronic Calibration (E-CAL)

Electronic calibration involves setting two values, using the indicator keypad:
 The signal level in mV, corresponding to the zero, or dead-load point (see section

4.2.2).

 The signal level in mV, corresponding to the maximum capacity of the scale (see

section 4.2.3).

To learn how to calculate these values from the load cell specifications provided by
the manufacturer, see section 4.2.1 below. You must perform both of the above for
the scale to be calibrated properly.

After calibrating the scale, you must save the values in permanent memories by

entering the setup menus and selecting the STORE option (see section 4.3). It
is also advised to lock calibration (see section 4.4).

Calibration

Electronic Calibration (E-CAL)

VT200/220 Technical Manual, Rev 1.00.01 40 Doc # TM-VT200/220-EN

4.2.1 Calculating Calibration Values

Consider the following example. A scale has maximum capacity 30/60kg,
e=0.010/0.020kg, with 4 load cells of rated capacity 50kg - 2mV each and dead load

1.940kg. The load cell data, as noted in the manufacturer data sheet, is shown in the
following table.

Load cell Output at 50kg Zero balance

L/C1 1.9793mV 0.0257mV

L/C2 1.9392mV 0.0276mV

L/C3 1.9577mV 0.0553mV

L/C4 1.9640mV -0.0022mV

To calculate the dead-load and span calibration values:

1. Calculate an average of the load cells’ rated output. In the example above, this
equals (1.9793+1.9392+1.9577+1.9640)/4 = 1.9600mV.

2. Calculate the combined output of the load cells when the scale is at maximum
capacity. In the example above, this equals 1.9600x60/4x50=0.5880mV. This is
the span calibration value.

3. Calculate an average of the load cells’ zero balance. In the example above, this
equals [0.0257+0.0276+0.0553+(- 0.0022)]/4=0.0266mV.

4. Calculate the scale dead-load. In the example above, this equals

1.9600 mV*[1.940Kg/(4*50Kg)]=0.0190mV.

5. Calculate the overall dead-load by adding together the load cell zero balance and
the scale dead-load (calculated in step 4). In the example above, this equals

0.0266+0.0190=0.0456mV. This is the dead-load calibration value.

4.2.2 Setting Zero Calibration (Dead-Load) Value

To set the zero calibration value electronically:

1. Enter the setup menus and use TOTAL (

) to scroll to the CAL menu. Press PRINT

(

) to enter the menu.

2. Press PRINT (

) to enter the E-CAL menu.

3. Press PRINT (

) to select the ZEro option (zero calibration).

4. Enter the overall mV of the dead-load (see chapter 4.2.1 to learn how to calculate
it). Use P.TARE (

) to edit the current digit and TARE ( ) to move to the next

digit.

5. Press PRINT (

) to record the zero calibration value. The display shows the

corresponding weight.

Calibration

Storing Calibration Data

VT200/220 Technical Manual, Rev 1.00.01 41 Doc # TM-VT200/220-EN

4.2.3 Span (Max. Capacity) Calibration

To set the span calibration value electronically:

1. Enter the setup menus and use TOTAL (

) to scroll to the CAL menu. Press PRINT

(

) to enter the menu.

2. Press PRINT (

) to enter the E-CAL menu.

3. Use TOTAL (

) to scroll to the SPAN option, and press PRINT ( ) to select it.

4. Enter the overall mV of the scale’s maximum capacity (see chapter 4.2.1 to learn

how to calculate it). Use P.TARE (

) to edit the current digit and TARE ( ) to

move to the next digit.

5. Press PRINT (

) to confirm the maximum capacity calibration value. The display

shows the corresponding weight.

4.3 Storing Calibration Data

After calibrating the scale (using either method) or the analog output, calibration data
is stored in volatile memory only, and so it is lost when the indicator powers down. To
store the calibration data permanently, follow the procedure below.

To perform span calibration:

1. Enter the setup menus and use TOTAL (

) to scroll to the STORE option.

2. Press PRINT (

). The indicator exits the setup menus and re-initializes.

4.4 Locking and Unlocking Calibration

An internal jumper (JP1, located on the main printed circuit board next to the analog
circuit) must be removed to allow access to configuration and calibration parameters.
One way to seal the indicator is to prevent access to this jumper. This is done by
placing a brittle plastic sticker over one of the screws that keeps the cabinet closed.

The indicator also has an Audit Trail Counter, which is incremented every time weight
parameters or calibration are changed, regardless of whether the change was saved
in EEPROM or not. This counter allows the authorities to check if any calibration
attempt has been made since the last inspection.

A label with an inscribed count (all digits permanently printed and suffixed by a

hyphen) is placed on the rear side of the instrument. The label is designated
CAL-Nr and may not be removed without destroying it.

Seals bear the verification mark of a notified body or alternative mark of the

manufacturer according to Annex II, section 2.3 of the Directive 90/384/EEC.

Calibration

Locking and Unlocking Calibration

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4.4.1 Sealing Indicator Enclosure with Stickers

After calibration, you can seal the indicator with two stickers:
 A non-removable label, to prevent unauthorized opening of the indicator

enclosure (Figure 7).

 A lead wire seal or hard plastic sticker, to prevent unauthorized tampering with

the load cell connector (Figure 8).

Figure 7 – Non-removable sticker

Figure 8 – Lead wire seal / hard plastic sticker

To seal the indicator, wall-mount (stainless steel) model:

Refer to Figure 9 below.

Figure 9 - Wall mount model, sealing instructions

Lead

seal

Non-

removable

sticker

Calibration

Locking and Unlocking Calibration

VT200/220 Technical Manual, Rev 1.00.01 43 Doc # TM-VT200/220-EN

To seal the indicator, desktop (aluminum) model:

For the desktop (aluminum) model, refer to Figure 10 below for the non­removable sticker, and to Figure 11 for the lead seal / non-removable sticker. You
must apply both stickers.

Figure 10 – Desktop model, sealing with non-removable sticker

Non­removable
sticker

Non-

removable

sticker

Calibration

Locking and Unlocking Calibration

VT200/220 Technical Manual, Rev 1.00.01 44 Doc # TM-VT200/220-EN

Figure 11 – Desktop model, sealing with lead seal / non-removable sticker

4.4.2 Securing Load Receptor

You can inscribe the serial number of the load receptor as part of the indicator
identification label.

The load receptor bears the serial number of the indicator on its data plate.

4.4.3 Checking Seal Status and Audit Trail Counter

In order to check whether the jumper is still in the sealed position, and that the audit
trail counter has not changed.

To check seal status and audit trail counter:

Execute function 48. If JP1 is currently in the sealed position, the word SEALED
appears on the display briefly. Following this, the audit trail counter is displayed.

Lead
Seal

General System Parameters

PAR Menu

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5 General System Parameters

Two of the VT200/220 setup menus provide access to general system parameters,
which affect how the scale operates:

 The PAR menu contains parameters including the number of display digits, the

position of the decimal point, the A/D gain and the zero range (see chapter 5.1).

 The SETUP 1 submenu, inside the SETUP menu, contains parameters including

the date format, totalizer enabling and auto power off (see chapter 5.2).

If you have two scales connected to the indicator, each scale has its own set of

parameters. All the parameters in the menus relate to the currently active
scale. To change parameters for scale 2, for instance, switch to scale 2 by
pressing SCALE ( ), and then access the menu and change the required
parameters.

Other setup menus allow you to calibrate the scale (CAL menu; see chapter 4); set
communication parameters (SETUP 2 and SETUP 3; see chapter 6); and input/output
parameters (SETUP 4, SETUP 5 and ACAL; see chapter 7).

5.1 PAR Menu

5.1.1 Accessing the Menu and Editing Parameters

To access the PAR menu:

1. Turn on the unit.

2. During the self-test routine, while all display segments are on (all 8 on the

display), press PRINT (

) momentarily, followed by TARE ( ) momentarily.

3. If the PIN code is activated, the display shows ACCESS briefly. Type the PIN and

press PRINT (

) to enter the calibration menu. The display shows SETUP.

4. Use TOTAL (

) to scroll to the PAR menu.

5. Press PRINT (

) to enter the menu.

To edit parameters in the PAR menu:

1. The current parameter number is shown on the display. Use PRINT (

) to scroll to

the parameter you need (see the following section for descriptions of parameters).

2. To edit the parameter value, use P.TARE (

) to increment the current digit and

TARE (

) to move to the next digit (if any).

3. When the display is showing the required value, press PRINT (

) to confirm your

selection.

General System Parameters

PAR Menu

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5.1.2 PAR Menu Parameters

Par. Description Values

1.P Number of display digits. 4, 5, 6

2.P Number of digits after decimal point. Defines the position of the
decimal point*.

0-5

3.P Display resolution*. 1-200

4.P First two digits of full load. 00-99

5.P Digital filter. If set to X, filter averages 2x samples. 0-5

6.P Number of conversions per second. If there are two scales
connected, the sum of their conversion rates (6P+6P) must be less
than 70. Otherwise the unit sets 6.P=14 for each scale.

3, 7, 14, 28, 57, 70

7.P No-motion samples. If set to X, samples = 2x. 1-7

8.1 Zero Tracking. In Display resolution (3.P) units / 1 second. 0F=disabled 0.5, 1,

2, 3, 5, 9.

8.2 Auto-zero at power up. 0=NO 1=YES

8.3 Dual digital filter (Antiflicker). 0=NO 1=YES

8.4

Automatically clear A/D converter error (Error 05).
NO specifies that, when the A/D converter is enabled, errors are
automatically cleared when the cause is no longer present.
YES specifies that A/D converter errors should remain on the display
until the operator presses PRINT.

0=NO 1=YES

8.5 Flash low battery indicator. 0=NO 1=YES

8.6 Leading zero blank. 0=NO 1=YES

8.7

Load cell amplifier gain adjustment (A/D Gain)
2mV/V setting allows maximum utilization of 1.75mV/V.
4mV/V setting allows maximum utilization of 3.75mV/V.

0=2mV/V
(1.75mV/V utilization)
1=4mV/V

(3.75mV/V utilization)

8.8

AC/DC excitation.
AC sets load cell excitation to AC, and specifies that polarity excitation
should be switched at the conversion rate. Switching excitation results
in a more stable zero.
DC sets load cell excitation to DC.

0=AC 1=DC

8.9

Second scale connected (second analog input).
Enables/disables the SCALE button.

0=NO 1=YES

8.A Zero range. Some operations, including taring and printing, are only
active within the zero range.

0=2% 1=10%

8.b Dual interval or range. This parameter is not relevant if 0.P=00. 0=interval 1=range

8.c Unit select. Specifies if weights are measured in kilograms or
pounds.

0=Kg 1=Lb

0.P First two digits of weighing range, defining the limit between the
2 weighing ranges, the lower display division is automatically selected.
If set to 00, disables interval / range.

00 - 99

* Refer to Section 5.1.3 for how to set parameters when using two scales.

General System Parameters

SETUP 1 (Inside SETUP Menu)

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5.1.3 Dual-scale Connecting And Parameter Settings

To connect and set up VT200 for dual-scale operations:

1. Set PAR parameters 8.9 to 1, 0.P to 00, and 6.P to a value less than 70 (see 5.1).

4. Ascertain that the Scale1 is calibrated and working properly (

lit).

5. Power down the unit. Connect the second scale to ST5 - 7 pins socket in the one
side and in the other side:

Stainless Steel Enclosure – To the main board using the mounting posts/spacers

provided.

Aluminum Enclosure – To the indicator’s rear panel (see page 80) using the

mounting posts/spacers provided.

Power up the unit.

6. Ascertain that the Scale2 values for parameters 2.P and 3.P are the same as those
for Scale1 (see 5.1).

7. After checking that the

annunciator is lit (switching with the SCALE key),

calibrate the second scale.

8. The device is now ready to work in dual-scale mode.

7. Use the SCALE key for switching between Scale1, Scale2 or sum of Scale1+Scale2

(

and annunciators lit).

Second scale is not supporting Continuous weight output-AND protocol see

6.3.2

5.2 SETUP 1 (Inside SETUP Menu)

5.2.1 Accessing the Menu and Editing Parameters

To access the SETUP 1 menu:

1. Turn on the unit.

2. During the self-test routine, while all display segments are on (all 8 on the
display), press PRINT (

) momentarily, followed by TARE ( ) momentarily.

3. If the PIN code is activated, the display shows ACCESS briefly. Type the PIN number
and then PRINT (

) to get into the calibration menu. The display shows SETUP.

4. Use TOTAL (

) to scroll to the SETUP menu and press PRINT ( ) to enter it.

5. Press PRINT (

) to enter the SETUP 1 menu.

General System Parameters

SETUP 1 (Inside SETUP Menu)

VT200/220 Technical Manual, Rev 1.00.01 48 Doc # TM-VT200/220-EN

To edit parameters in the SETUP 1 menu:

1. The current parameter number is shown on the display. Use PRINT (

) to scroll to

the parameter you need (see the following section for descriptions of parameters).

2. To edit the parameter value, use P.TARE ( ) to increment the current digit and
TARE (

) to move to the next digit.

3. When the display is showing the required value, press PRINT (

) to confirm your

selection.

5.2.2 SETUP 1 Parameters

Parameters 1.2, 1.3, 1.5 and 1.7 are not in use in this version of the

VT200/220, and so are not detailed in the table below.

Par. Description Values

1.1 Enable totalizer. YES enables the totalizer. NO disables it. 0=NO 1=YES

1.4 Date format. Sets the date format in all printing formats. 0=d-m-y 1=m-d-y

1.6 Enable battery-backed RAM. If the battery-backed RAM option is

installed, this parameter enables saving date, time and the
accumulated total in persistent memory.

You must enable this parameter to be able to set date and time.

0=NO 1=YES

1.8 Enable function menu.

YES specifies that users can access the function menu by pressing
TARE for 3 seconds.

NO specifies that users should not be able to access the function
menu.

0=NO 1=YES

1.t Auto power off. Time for the unit to switch off if the scale is zero. 00-99 minutes
00=Disabled

1.E Number of samples in counting. 5-99

Serial Communication

Serial Ports Configuration

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6 Serial Communication

Communication and printer parameters can be set in the SETUP 2 and SETUP 3
submenus of the SETUP menu.

6.1 Serial Ports Configuration

VT200/220 has two serial ports, designated port 1 and port 2:

 Port 1 is an RS232 port.
 Port 2 is an optional port installed on order, and can be either RS232 or RS485.

6.1.1 RS232 Serial Port

The port is used to connect to serial printers or personal computers.

General Asynchronous serial ASCII, RS232C standard, full duplex.

Protocol 1200, 2400, 4800 or 9600 baud rate, 1 start bit, 8 data bits/no parity or 7 data bits/odd

or even parity, 1 stop bit.

Handshake DTR BUSY per character for fanfold printers or REQUEST PAPER END STATUS for EPSON

TM-295 slip printer.

Connection Cable gland, stainless steel enclosure or DB9 male on rear panel, aluminum enclosure

(J1 or J3). Three-conductor shielded cable, max distance 15m.

Tx = Pin 3

Rx/DTR = Pin 2

GND = Pin 5

6.1.2 RS485 Serial Port

Used to connect to a host computer, remote printer, remote display, etc.

General Asynchronous serial ASCII, RS485 half duplex.

Protocol 2400 to 57600 baud, 1 start bit, 8 data bits/even or no parity 7 data bits/even parity, 1

stop bit.

Connection Cable gland, stainless steel enclosure or DB9 female on rear panel aluminum enclosure

(J3). Two-conductor twisted-pair shielded cable, max distance 1000m. A termination
resistor (120R) may be connected by shorting pins 8 and 9.

A = Pin 6

B = Pin 7

Serial Communication

Setting Port Output Parameters

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6.2 Setting Port Output Parameters

6.2.1 Setting Port 1 Output

You can use setup parameter 2.t to determine the output for port 1. The parameter
accepts the following values:

 00 – port disabled.
 01, 03, 04, 05, 06, 07, 08, 10, 20 – print formats for printer, equivalent to

functions 21, 23, 24, 25, 26, 28, 30, respectively. See section 3.3.2.

 02 – continuous weight output. See section 6.3.2.
 09 – print on demand. See section 6.3.3.
 13 – transmit alibi memory. See section 6.3.4.

6.2.2 Setting Port 2 Output

You can use setup parameter 3.t to determine the output for port 2. The parameter
accepts the following values:

 00 – port disabled.
 01 – continuous weight output. See chapter 6.3.2.
 02 – EDP protocol output. See chapter 6.3.5.
 03 – printing data from local printer on remote printer. See chapter 6.3.6.
 65 through 89 – participate in a network of several indicators as slave, with this

address.

6.3 Output Types

6.3.1 Local Printer

Works with port 1. A slip is printed on the printer connected to the port each time the
user presses PRINT (

). The following print formats are available:

 Ten standard print formats (see section 6.4).
 Two custom print formats (see section 6.5).

6.3.2 Continuous Weight Output

Works with ports 1 and 2 (RS232 or RS485). Net weight and status information is
transmitted continuously. No handshake is required. Used mainly for remote display
or PC. The structure of the transmitted data block is shown below. There are 2
Continuous Weight Output selectable (parameters 2.2 and 3.6) formats LEO and AND
(AND protocol is supported only by Scale 1).

Serial Communication

Output Types

VT200/220 Technical Manual, Rev 1.00.01 51 Doc # TM-VT200/220-EN

Continuous Weight Data Block Composition LEO Format

Byte Name Description

1 Weight status Bit 0: 0=Normal

Bit 1: 0=Gross

Bit 2: 0=No Auto zero

Bit 3: 0=Within range

Bit 4: 0=No standstill

Bit 5: 0=Normal

Bit 6: Must be always set to 1

Bit 7: Zero or parity

1=No weight display

1=Net

1=Auto zero

1=Out of range

1=Standstill

1=Under minimum weighing range

2 Polarity “+” or “-”.

3-8 Net weight 6 digits, including decimal point if any.

9 Sync Carriage return (0D hex) for end of transmission.

Continuous Weight Data Block Composition AND Format

Byte Name Description

1-2 Weight status1 ST - Weight is stable

US - Weight is unstable

OL - Weight is overloaded

3 Always "," (Comma 2C hex)

4-5 Weight status2 GS - Weight is gross

NT - Weight is net

TR - If regular tare is in system, when pressing P.TARE key, TR will be
displayed briefly.

PT - If preset tare is in system, when pressing P.TARE key, PT will be
displayed briefly.

6 Always "," (Comma 2C hex)

7 Polarity “+” or “-”

8-14 Weight 7 digits, including decimal point (2E hex) if any

15-16 Weight Unit "kg" for kilogram, space (20 hex) +"t" for ton and "lb" for pound.

17-18 Sync CR+LF - Carriage return (0D hex) and Line feed (0A hex) for end of

transmission.

Serial Communication

Output Types

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Two-Scale Operation

When two scales are connected to the indicator, both their weights are transmitted
continuously in the format P+123.45 P+678.90CR. In each pair, the first block

transmitted is the weight of the first scale, and the second block transmitted is the
weight of the second scale.

For this mode of operation, the parameter settings are SETUP > SETUP 2: 2.t=22,
and SETUP > SETUP 3: 3.t=11.

The format of the data block, for each scale, is shown below.

Byte Name Description

1 Weight status Bit 0: 0=Normal

Bit 1: 0=Gross

Bit 2: 0=No Auto zero

Bit 3: 0=Within range

Bit 4: 0=No standstill

Bit 5: 0=Normal

Bit 6: Always 1

Bit 7: Zero or parity

1=No weight display

1=Net

1=Auto zero

1=Out of range

1=Standstill

1=Under minimum weighing range

2 Polarity “+” or “-”.

3-8 Indicated weight 6 digits, including decimal point if any.

9 Sync Carriage return (0D hex) for end of transmission.

6.3.3 Continuous Weight With Tare

Works with port 2 (RS232 or RS485).
This option can be programmed by setting setup parameter 3.t to 06. The weight

indication of each scale is transmitted continuously along with its current tare and
gross weight. The format is:

P+123.45N010.00(T/P)133.45G

Where the characters indicate:

 N for Net weight.
 G for Gross weight.
 T for the Tare weight when the scale was manually tared, or P for the tare weight

when the tare was preset either from the device or from a PC.

Serial Communication

Output Types

VT200/220 Technical Manual, Rev 1.00.01 53 Doc # TM-VT200/220-EN

Data Block Composition

Byte Name Description

1 Weight status Bit 0: 0=Normal

Bit 1: 0=Gross

Bit 2: 0=No Auto zero

Bit 3: 0=Within range

Bit 4: 0=No standstill

Bit 5: 0=Normal

Bit 6: Must be always set to 1

Bit 7: Zero or parity

1=No weight display

1=Net

1=Auto zero

1=Out of range

1=Standstill

1=Under minimum weighing range

2 Polarity “+” or “-”.

3-8 Net weight 6 digits, including decimal point if any.

9 “N” Indicates that the preceding weight is net.

10-15 Net weight 6 digits, including decimal point if any.

16 “T” or “P” “T” specifies that the preceding weight is a manual tare.

“P” specifies that the preceding weight is a preset tare.

17-22 Gross weight 6 digits, including decimal point if any.

23 “G” Indicates that the preceding weight is gross.

24 Sync Carriage return (0D hex) for end of transmission.

When Display Indication is Not Weight

When the indicator displays something other than weight, the data string to COM2
will be as follows:

|A|XXXX|TARE VALUE|T/P|GROSS VALUE|G|CR

“XXXX” in the format above will either be blank spaces, an error message, or the
menu currently accessed by the user.

6.3.4 Print on Demand

Works with Port 1 (RS232). Weight data is transmitted every time a character is
received from a connected peripheral. The demand character is programmed in setup

3.t: for example “1”, 49d, or 31 hex.

Serial Communication

Output Types

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6.3.5 Alibi Transmit

Works with Port1 (RS232).
Transmits alibi serial number and gross weight for each transaction, when the PRINT

key is pressed. The record is transmitted in the following format:

SN 1234 012340 kgG

6.3.6 Alibi Mode Commands

When Alibi mode is active (2.t=09), these operations can be executed.

Transmit Displayed Weight

This is executed when ASCII character ? (3F hex) is received. The output data block
is as shown below:

Byte Name Description

1 Weight status Bit 0: 0=Normal

Bit 1: 0=Gross

Bit 2: 0=No Auto zero

Bit 3: 0=Within range

Bit 4: 0=No standstill

Bit 5: 0=Normal

Bit 6: Must be always set to 1

Bit 7: Zero or parity

1=No weight display

1=Net

1=Auto zero

1=Out of range

1=Standstill

1=Under minimum weighing range

2 Polarity “+” or “-”

3-8 Weight 6 digits, including decimal point if any

9 Sync Carriage return (0D hex) for end of transmission.

Command “ZERO”

Equivalent to pressing the front panel Zero key. This is executed when ASCII
character 0 (30 hex) is received. No data is returned to the host. Execution of the

command may be verified by examining the weight (command ?).

Print on Demand Character

When a demand character is received the unit saves the weight in its Alibi flash. It
then transmits the Alibi number and the weight, for example: 1234 012.340 kg

Serial Communication

Output Types

VT200/220 Technical Manual, Rev 1.00.01 55 Doc # TM-VT200/220-EN

The demand character may be programmed through SETUP > SETUP 2, setting

2.c=65-90 (A-Z). A (41h) will generate and transmit the new Alibi number; a (61h)

will repeat the last Alibi number (in the case where the message was not received
properly).

6.3.7 EDP Protocol Output

Works With Port 2 (RS232 or RS485).

Transmits weight measurements to a host computer, according to the currently­selected print format, with or without an ENQ prompt, and with or without an
ACK/NAK handshake (see Relevant Setup Parameters below).

The EDP protocol works when more than one indicator is connected to the host PC. It
is also more flexible than Print on Demand, allowing for more complex operations. It
can also transmit more than just the weight measurement shown on the display,
because it sends data according to the currently-selected print format.

Full Protocol Workflow

1. Within 5 seconds of initialization, the PC requests data by sending an ENQ (05 h)
command. If it doesn’t send an ENQ, the indicator shows Error 30 (host not ready).

2. After the PRINT (

) button is pressed, the indicator transmits weight information
according to the currently-selected print format, using the standard data block
composition (shown below).

3. Within 5 seconds of transmission, the PC either:

 Acknowledges receiving the data properly, by sending an ACK (06 h)

command.

 Notifies the indicator the data was not properly received, by sending a NAK

(15 h) command.

 Does not respond, in which case the indicator shows error 33 (host does not

acknowledge).

4. If the host responded with a NAK command, steps 2 and 3 are repeated. The
number of repeats is unlimited.

Relevant Setup Parameters

 3.1 – timeout control. 0=No; 1=Yes. Turning off timeout removes the 5-second

constraint in workflow steps 2 and 4. Errors 30 or 33 are never shown.

 3.2 – handshake. 0=No; 1=Yes. Turning off handshake removes steps 4 and 5 of

the protocol workflow - the indicator sends data blocks on demand, without
waiting for a response.

 3.3 – operator disable. 0=No; 1=Yes. If set to 1, any key pressed on this indicator

interrupts EDP communications.

 3.4 – host enquiry. 0=No; 1=Yes. Turning off host enquiry specifies that the

indicator should send weight information continuously, not on demand.

Serial Communication

Output Types

VT200/220 Technical Manual, Rev 1.00.01 56 Doc # TM-VT200/220-EN

EDP Data Block Composition

Character/s Description

STX (02 h) Start of transmission.

ASCII (any) ASCII data identical to the data printed.

ETX (03 h) End of transmission.

BCC Block check character (XORSUM of all data characters STX, ETX inclusive).

6.3.8 Remote Printer Output

Works with Port 2 (RS232 or RS485). Used to transmit the data printed on the local
printer to a remote printer. No handshake is required.

6.3.9 Master-Slave Protocol Out p ut

Works with Port 2 (RS232 or RS485). By setting port 2 output method (parameter 3.t)
to any number between 65 and 89, you specify that the indicator should participate in
a network of several indicators. The number set in 3.t is this indicator’s network
address.

Master-Slave Commands

Port 2 (RS232, RS485)

List of File Types (Commands)

Command Hex Description Time Slave Response

? 3F UPLOAD WEIGHT & STATUS 50 ms STATUS + WEIGHT

@ 40 RESET SLAVE 15ms NONE

K 4B DOWNLOAD KEY 0.1 ms NONE

? Upload Status

It is the main command used to poll the SLAVE(s), which reply with the current
weight being measured or with a message if bit 0 of the status byte is ‘1’. In the
normal state the SLAVE will respond within 3-4 character time.

(e.g. with 9600 baud, character time ≈ 1 msec, the master should expect reception of
STX from the SLAVE within 5 msec after the ETX was transmitted from the master).

Master Transmission

STX ADD ? 0 BCS2 BCS1 ETX

Serial Communication

Output Types

VT200/220 Technical Manual, Rev 1.00.01 57 Doc # TM-VT200/220-EN

Example:

STX ADD ? 0 BCS2 BCS1 ETX

Hex

2 41 3F 30 3C 34 3

Ascii

STX A ? 0 < 4 ETX

 ADD (Address) is set in 3.t = 65-90 (A-Z)
 CheckSum is calculated as the XOR sum of all data characters, ETX excluded.

E.g. 02 XOR 41 XOR 3F XOR 30 = 4C (BCS1 = 30+C=3C, BCS2 = 30+4=34)

Slave Response

STX ADD ? 0 STATUS BYTE WEIGHT X Y Z BCS2 BCS1 ETX

WEIGHT = 5 digits + decimal point if any. (ASCII,MSD FIRST)

X = Scale number

 0 = Scale 1 + Scale 2
 1 = Scale 1
 2 = Scale 2

Y = Digital input (TILT)

 0 = Not Active
 1 = Active

Z = Setpoints

 0 = Neither is active
 1 = Setpoint 1 is active
 2 = Setpoint 2 is active
 3 = Setpoint 1, Setpoint 2 are active

Status Byte

B7 B6 B5 B4 B3 B2 B1 B0

Zero or
Parity

1 Under Min.

Weighing Range

0=NO, 1=YES

No Motion

0=NO,
1=YES

Out of Range

0=NO

1=YES

Autozero

0=NO

1=YES

0=Gross

1=Net

0=Normal
Weight

1=No
Weight

The slave response will contain a message in place of the weight if b0 of the status
byte is high.

Serial Communication

Output Types

VT200/220 Technical Manual, Rev 1.00.01 58 Doc # TM-VT200/220-EN

@ Reset Slave

Resets the slave to its power on condition.

Master Transmission

STX ADD @ 0 BCS2 BCS1 ETX

Slave Response

None.

Download Key

This is used to download keyboard commands. Use of remote keyboard commands
must be enabled: This is done by the setting SETUP3: 3.5=ON.

Master Transmission

STX ADD K 0 xx BCS2 BCS1 ETX

XX values (2 bytes):

 30 = Keyscale1 2
 31 = Keyesc
 32 = Keyright
 33 = Keyup
 34 = Keyenter
 35 = Keydown
 36 = Keyfn
 37 = Keypieces
 38 = Keybattery
 39 = Keyfnpieces

Slave Response

None.

Gross-Tare-Net Weight Transmission

The output data format of the master-slave protocol is shown below:

STX ADD = 0 XXXXXX BCS2 BCS1 ETX

The output data block is as shown below:

Serial Communication

Output Types

VT200/220 Technical Manual, Rev 1.00.01 59 Doc # TM-VT200/220-EN

Byte Name Description

1 Weight status Bit 0: 0=Normal

Bit 1: 0=Gross

Bit 2: 0=No Auto zero

Bit 3: 0=Within range

Bit 4: 0=No standstill

Bit 5: 0=Normal

Bit 6: Must be always set to 1

Bit 7: Zero or parity

1=No weight display

1=Net

1=Auto zero

1=Out of range

1=Standstill

1=Under minimum weighing range

2 Polarity “+” or “-”

3-8 Net weight 6 digits, including decimal point if any

9 “N” Indicates that the preceding weight is net.

10-15 Net weight 6 digits, including decimal point if any

16 “T” or “P” “T” specifies that the preceding weight is a manual tare.

“P” specifies that the preceding weight is a preset tare.

17-22 Gross weight 6 digits, including decimal point if any

23 “G” Indicates that the preceding weight is gross.

24 Scale number Either 1 or 2

Tare Presetting via PC

The command for taring the device is ‘T0’ and it has the following format:

STX ADD T 0 XXXXXX BCS2 BCS1 ETX

XXXXXX, the tare weight, is the 6 digit required tare. For example (assuming no
decimal point), 000010=10kg tare; 000100=100kg tare.

If the scale is set to accuracy of 1 decimal point then 000010=1kg tare;
000100=10kg tare.

Separation of COM1 and COM2 Network Addresses

You can program a separate address for COM1, mainly for Alibi purposes but also for
other possible future uses. This is done by setting setup parameter 2.C=65-90 (that is
A to Z) according to your requirements.

Serial Communication

Standard Print Formats

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6.4 Standard Print Formats

You can select one of the ten VT200/220’s standard print formats, shown and
explained in the table below, using the function menu (functions 21 through 30).
Executing the function that corresponds to a print format makes it the current print

format. This is the format used by the printer when users press PRINT (

).

It is also possible to download one of two custom print formats

(see section 6.5).

Func. Name of

Print Format

Contents

(in this order)

Layout

21 Ticket Date, time, weight.

Whether a gross or net
weight is shown depends
on the current VT200/220
mode.

29-04-03 09:15 N:0010

WEIGHT : <123.40 kg>

22 Continuous output Sends the current weight measurement and status to an external device (a

display or PC). Layout depends on the settings of the external device.
There are 2 Continuous output formats LEA and AND see 6.3.2

23 Net/gross Either net or gross

weight, depending what is
shown on the display.

GROSS : <05210kg>

OR

NET : <00950 kg>

24 3-line detailed

weight

When net weight is
showing: Gross weight,
tare value and net
weight.

When gross weight is
showing: Gross only.

GROSS : 07940kg
TARE : 06170kg
NET : 01770kg

OR

GROSS : <06170kg>

25 3-line detailed

weight large

Gross weight, tare value
and net weight in large
characters.

GROSS : 07940kg
TARE : 06170kg
NET : 01770kg

Serial Communication

Custom Print Formats

VT200/220 Technical Manual, Rev 1.00.01 61 Doc # TM-VT200/220-EN

Func. Name of

Print Format

Contents

(in this order)

Layout

26 1-line detailed

weight

When net weight is
showing: Memory serial
number, gross weight,
tare value and net
weight.

When gross weight is
showing: Memory serial
number and gross weight.

1234 09260kgG 07940kgT 01320kgN

OR

1234 07940kgG

27 Displayed weight The number currently

showing on the display.

00439.5

28 Displayed weight

and serial

Memory serial number
and weight shown on the
indicator screen

1234 00439.5kg

29 Demand Gross weight is sent to an

external device on
request (when an ENQ is
received).

GROSS:<00.500kg>

30 2-line label Gross weight, tare value

and net weight.

GROSS TARE NET

12.345 02.345 10.000

6.5 Custom Print Formats

In addition to the standard print formats, there are two custom print formats,
activated by function 41 for gross mode and function 42 for net mode.

6.5.1 Creating a Custom Pri n t Fo rmat

A custom print format is created on a PC, as an ASCII file that may be no larger than
511 bytes. The ASCII file can have two types of text:

 Fields – text with the format [!xx], where xx is the field code. When a ticket is

printed, each field added to the print format is added with data from the current
weight measurement. The table below lists all the field codes.

 Fixed text – any ASCII characters that do not specify a field. These characters

are printed regardless of the data in the current weight measurement.

When you follow the procedure for downloading a custom print format (see section

6.5.2 below), the indicator uploads the default print format to the PC, as an ASCII

file. You can edit this file to create the custom print format.

Serial Communication

Custom Print Formats

VT200/220 Technical Manual, Rev 1.00.01 62 Doc # TM-VT200/220-EN

Field Codes Allowed in Custom Print Formats

 [!005] – date (when RTC option is installed).
 [!011] – average piece weight used in counting
 [!012] – number of pieces counted.
 [!013] – time (when RTC option is installed).
 [!014] – gross weight.
 [!015] – current tare value.
 [!016] – current memory serial number.
 [!017] – net weight.
 [!042] – current accumulated total.
 [!098] – unit of weight.

Example of Custom Print Format

Vishay Transducers
WEIGHT <[!014] kg>
N: [!016]

The above code results in the following printed ticket:

Vishay Transducers

WEIGHT <12345 kg>

N: 0001

6.5.2 Downloading a Custom Print Format

Before you can download a custom print format, you must create it on a PC, as an
ASCII file 511 bytes or less in length (see the previous section).

The VT200/220 can store up to two custom print formats, in two memory slots.
Function 41 is used to download a print format to the first slot; function 42 is used to
download a print format to the second slot. You can download a custom print format
to one or both slots.

To download a custom print format:

1. Connect a PC to port 1 on the indicator, set baud rate = 2400 and 2.t = 20.

2. Use a serial communication program (such as Windows Hyper Terminal or
Procomm) to set the serial port, baud rate, data bits, etc.

3. Press TARE (

) for three seconds. The display shows fn 00.

Serial Communication

Custom Print Formats

VT200/220 Technical Manual, Rev 1.00.01 63 Doc # TM-VT200/220-EN

4. Select function 41 or 42 (depending on which memory slot you want to use for the

custom print format). Use P.TARE (

) to edit the current digit and TARE ( ) to

move to the next digit. When done, press PRINT (

).

If you choose the first memory slot (by selecting function 41), and that slot

already contains a custom print format to the slot, the indicator downloads a
new print format and overwrites the old one. Similarly, if you choose the
second memory slot (by selecting function 42), and it is already occupied, the
old print format will be overwritten.

5. If the PIN code is active, the display shows ACCESS. Enter the PIN and press PRINT

(

).

6. The display shows For 1 (if you selected function 41) or For 2 (if you selected

function 42). An ASCII file for the default print format is uploaded to the PC.

7. On the PC, you can open the ASCII file and edit it to create the custom print
format. If you have already prepared an ASCII file for the custom print format,
discard the uploaded file.

8. Use the serial communication program on the PC to transmit it to the indicator.

9. When the transmission ends, press ESC (

) on the indicator.

10. The display shows PRN 1 briefly, and the received ASCII block is transmitted to the
PC for verification. The received ticket is stored in non-volatile memory.

11. On the PC, check the ASCII block sent by the indicator, to ensure communication
was successful. If not, go back to step 4.

12. If you want to download an additional custom print format (to the other memory
slot) go back to step 1. Next time around, select function 42 (if you selected 41
this time), or function 41 (if you selected 42 this time).

Outputs and Digital Input

Specifications

VT200/220 Technical Manual, Rev 1.00.01 64 Doc # TM-VT200/220-EN

7 Outputs and Digital Input

The VT200/220 is able to interface with weighing automation systems, using two
optoisolated outputs (digital setpoints) and one digital input. There is also an analog
output configuration.

 The digital outputs (setpoints) are triggered when the scale reads an upper

weight threshold, defined by the user. There is a separate threshold for each
setpoint.

 The analog output configuration consists of a galvanically-isolated D/A converter,

generating either voltage or current output. Relevant parameters can be modified
using the ACAL dialog (see section 7.4).

 The digital input is used as a tilt switch. When a signal is received on the input

cable, the display locks for a certain period of time. The tilt switch is enabled, and
its time delay defined during setup.

7.1 Specifications

7.1.1 Digital Outputs

 Transistor output open collector positive common.
 24VDC + 10% / 100mA per output.
 Max off: State voltage 30VDC / leakage 100µA.
 Optoisolated to 2.5kV.
 Short-circuit protected.
 2ms maximum delay for both on and off positions.

7.1.2 Analog Outputs

 Galvanically-isolated D/A converter.
 Circuit may be operated as current output or voltage output.
 Output is capable of driving 20mA into 1KΩ load.
 Current output values: 0-20mA, 4-20mA, 0-24mA.
 Voltage output values: 0-10V.
 Powered by an external 24VDC (stabilised +/- 10%, current rating 50 mA).

7.1.3 Digital Input (Tilt Switch)

 9-24VDC, positive common optoisolated to 2.5KV.
 Input resistance 3.3KΩ.
 2ms maximum delay for both on and off positions.

Outputs and Digital Input

Connecting Digital Outputs and Tilt Switch

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7.2 Connecting Digital Outputs and Tilt Switch

Figure 12 – Digital output and tilt switch connection diagram

7.3 Setting Thresholds for Digital Setpoints

Each setpoint has an upper weight threshold that triggers it. For example, if you set a
threshold of 13kg for setpoint 1, nothing will happen as long as the items on the scale
weigh less than 13kg. As soon as the weight measured reaches exactly 13kg, or
more, the setpoint will be switched on (if normally off) or off (if normally on).

You can use the two setpoints to set an upper and lower range for a production
operation. For example, if the weight of a product drops below the threshold for
setpoint 1, or goes above the threshold for setpoint 2, it can be rejected.

Setpoints can be activated either by net weight or by gross weight, depending

on setup parameter 5.6.

Setpoints can be either normally open or normally closed, depending on setup

parameter 5.7.

Power &

Setpoints

Connector

3

4

7

5

6

I

C

C

O

O

In

p

ut 1

T

ilt Switch

Out

p

ut 1

Out

p

ut 2

Fuse

Digital

Outputs

Imax=100m

+

+

+

+

- -

-

-

L
O
A
D

L
O
A
D

Power

Supply

9-24VDC

Power

Supply

24VDC

Outputs and Digital Input

Configuring Analog Output

VT200/220 Technical Manual, Rev 1.00.01 66 Doc # TM-VT200/220-EN

To edit weight thresholds for both setpoints:

1. Press TARE (

) on the front panel, and keep it pressed for around three seconds.

The display shows Fn 00. The left zero flashes.

2. Editing setpoints is function 01, so press t (TARE) to move to the second digit. It

starts flashing.

3. Press u (P.TARE) once. The display should now show Fn 01.

4. Press PRINT (

) to confirm. The display shows SEtP 1 briefly. Then it shows the

current threshold for setpoint 1. The extreme-left digit flashes.

 If you don’t want to change this threshold, press PRINT (

) and skip to step

6.

 If you do want to change it, proceed to step 5.

5. Enter a new threshold value. To do this, press u (P.TARE) to change the current
digit, then t (TARE) to move to the next digit. To finish, press PRINT (

).

6. The display now shows SEtP 2 briefly, then the current threshold for setpoint 2.
The extreme-left digit flashes.

 If you don’t want to change this threshold, press PRINT ( ) and skip to step

8.

 If you do want to change it, proceed to step 7.

7. Enter a new threshold value. To do this, press u (P.TARE) to change the current
digit, then t (TARE) to move to the next digit. When you are done, press PRINT

(

).

8. The threshold values are saved in EEPROM memory.

7.4 Configuring Analog Output

The analog output channel allows the indicator to communicate with PLC devices,
using one of the following two methods:

 Converting load cell input into voltage (0-10V).
 Converting load cell input into current (0-20mA or 4-20mA).

This feature is only active if your indicator is equipped with an optional analog output
board. Section 7.4.1 below explains how to connect the analog output board, and set
a hardware jumper to define which of the two output methods to use.

After connecting the board and setting the jumper, you can set analog output
parameters using the SETUP > ACAL menu (see section 7.4.2).

Outputs and Digital Input

Configuring Analog Output

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7.4.1 Connecting PCB and Setting Jumper

In order to use analog output, the option PCB (PCB 761) connected it to the VT200 as
follows: In the one side to ST5 socket on the main board and in the other side using
the mounting posts/spacers provided to:

Stainless steel enclosure – Main board.

Aluminum enclosure – Indicator’s rear panel (see page 80).

Jumper JP1 determines the output mode – current or voltage.

Analog output pins connections:

1. Connect pins as follows:

 For current output, connect pin 1 (current output, +) and pin 3 (common).
 For voltage output, connect pin 2 (voltage output, +) and pin 3 (common).

2. Connect an external power supply of 24VDC, using pins 4 and 5:

 Pin 4 – power in (+).
 Pin 5 – power in (-).

Outputs and Digital Input

Configuring Analog Output

VT200/220 Technical Manual, Rev 1.00.01 68 Doc # TM-VT200/220-EN

To set output mode jumper (JP1):

Set jumper JP1 to the appropriate position, to define voltage output or current
voltage, as shown in the image below.

7.4.2 Setting Analog Output Parameters

The output can be set to the standard calibration, where 0 on the weight display is
output as 0 mA or 4 mA, and max on the display is output as 20mA. The output is
capable of driving 20mA into 1K Ohm load.

Alternatively, you can edit these zero and span calibration values. This is controlled
through the A.1 parameter, which, when set to 1, opens a dialog that allows you to
enter mA values for zero and span.

There are several other analog output parameters, detailed in the table below.

Par. Description Values

A.1 Standard / custom zero and span.

0 specifies that the scale should output 0mA at zero input and
20mA at maximum input (or 0V at zero and 10V at max).

1 opens a dialog after A.8 that allows you to enter custom zero
and span values. Press PRINT to confirm; the display shows
0 XX.XXX. Enter the D/A output at zero, in voltage or mA, and
press PRINT. The display shows F XX.XXXX. Enter the D/A
output at maximum input, in voltage or mA, and press PRINT.

0 = Standard (20mA max)

1 = User defined Zero and
Span

A.2 Normal or absolute AOUT mode. Specifies what happens

when the displayed weight is negative: analog output is either
zero (normal mode) or the absolute value of the negative
reading (absolute mode). For example, if the display shows -

100.00, and absolute mode is set, AOUT=10mA. In normal
mode, AOUT=0mA, regardless of the negative reading.

0= Normal

1 = Absolute

Outputs and Digital Input

Configuring Analog Output

VT200/220 Technical Manual, Rev 1.00.01 69 Doc # TM-VT200/220-EN

Par. Description Values

A.3 Error output level. Specifies whether scale errors should be

indicated as a low or high signal.

0 = Low (0mA)

1 = High (24mA)

A.4 Current / voltage. This parameter must correspond to the

hardware jumper, which defines whether output should be in
current or voltage (see section 7.4.1).

0 = Current

1 = Voltage

A.5 Net / gross. Specifies whether the indicator should always

output gross weight, or output net weight when tare is active.

0 = Net weight

1 = Gross weight

A.6 Effective Range for current output. Sets the range to 0-

20mA or 4-20mA. Relevant only if A.4 and the hardware
jumper are set to current.

0 = 0-20mA

1 = 4-20mA

A.7 Resolution. Specifies whether output should be in high

resolution if the display is showing high resolution.

0 = Display

1 = Internal

A.8 Operation. Enables and disables the analog output. 0 = Disabled

1 = Enabled

7.4.3 Calibrating D/A Converter

To calibrate D/A converter (0-10V):

1. Place jumper JP1 on PCB (761) for voltage output.

2. Power up the unit, enter the setup menus and enter the ACAL menu.

3. Set parameters as follows: A.1=1; A.2=0; A.3=0; A.4=1; A.5=0; A.6=0; A.7=1;
A.8=1.

4. Skip D/A calibration and save the above settings by selecting STORE.

5. Access the function menu and select function 85 (see 3.3.1).

6. The display shows C 00000. Enter 65535. Press PRINT to output the value.

7. Use a voltmeter to measure the voltage at pins 2 (+) and 3 (-) of the analog

output connector (J4). Record the value (in volts). Calculate a new value, which is:
100/recorded value. E.g. Recorded value is 9.94, new value is 100/9.94=10.06.
This is the full scale voltage.

8. Exit Fn 85 and re-enter the ACAL menu.

9. Set parameter A.1 to 1. The calibration dialog starts.

10. When prompted for D/A Zero, enter 00.000.

11. When prompted for D/A Span, enter the full scale voltage you calculated in step 7.

12. When you finish stepping through the dialog, exit the ACAL menu.

13. Select STORE to save your settings.

Outputs and Digital Input

Using the Tilt Switch

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7.5 Using the Tilt Switch

You can set the time delay for the tilt switch function using the setup parameter 4.t.
Use this parameter to enter the time delay for display lock in 1/10 seconds. The delay
may be between 1 and 90 1/10 seconds (i.e. between 0.1 and 9 seconds).

When the contacts close, the display locks after the time delay elapses. When they
open again, the display unlocks after the same time delay elapses.

Set 4.t to 00 to disable the tilt-switch function.

7.5.1 Tilt Switch Options

Parameter 4.t, which controls the tilt switched, allows several special options,
accessed by setting it above 90:

 91 – Tare scale on the rising edge of input. Setpoints always enabled.
 92 – Print on the rising edge of the input. Setpoints always enabled.
 93 – Setpoints active when input is high. Setpoints inactive when input is low.
 94 – Scale is tared at the rising edge of input. If taring is successful, setpoints are

activated. If input is low, setpoints are inactive.

 95 – When input is low, scale 1 is selected and displayed. When input is high,

scale 2 is selected and displayed.

 96 – Zero the scale.

Service Operations and Testing

Service Operations

VT200/220 Technical Manual, Rev 1.00.01 71 Doc # TM-VT200/220-EN

8 Service Operations and Testing

8.1 Service Operations

The operations described below are performed by accessing the function menu
(pressing the TARE (

) button for three seconds). For more detailed information on

using the function Menu, see section 3.3.1.

8.1.1 Setting and Changing Calibration Password (Function 40)

The Personal Identification Number (PIN) is a password that restricts access to the
calibration procedure. By default, the PIN is inactive and set to 000000. You can use

the procedure below to set a secret PIN, which will prevent users and unauthorized
personnel from changing calibration parameters.

To change the PIN:

1. Access the function menu and select function 40.

2. The display shows Pin 0 briefly, and then 000000. Enter the old PIN and press
PRINT(

).

 If the PIN you entered is correct, the display shows PIN 1.
 If you entered a wrong PIN, the unit resets. Turn it on and go back to step 1.

3. Enter the new PIN number and press PRINT(

). The display shows PIN 2.

4. Re-enter the new PIN and press ENTER.

The new PIN is stored and the display shows PASS briefly. If the two entries are not
the same, FAIL is displayed briefly and the new PIN you entered is discarded.

IMPORTANT: Make sure you do not forget the PIN entered. If the PIN is

lost, the unit must be returned to the factory to initialize the PIN, and a
fee will be charged.

8.1.2 Setting Date, Ti me and Serial Number ( Function 05)

In order to set the time, the battery backed RAM and real time clock option must be
installed.

This function depends on two parameters accessed through SETUP > SETUP1:

 Parameter 1.6 – enables and disables battery-backed RAM.
 Parameter 1.4 – specifies the date format (DDMMYY or MMDDYY).

Service Operations and Testing

Service Operations

VT200/220 Technical Manual, Rev 1.00.01 72 Doc # TM-VT200/220-EN

To set date, time and serial number:

1. Access the function menu and select function 05.

2. The display shows dAtE briefly, and then the date (in either of the formats DDMMYY

or MMDDYY, depending on setup parameter 1.4). Edit the date, using P.TARE (

) to

change the current digit, and TARE (

) to move to the next digit. When you are

done, press PRINT (

).

3. The display shows the current time in HHmmSS format (hours, minutes, seconds).

Edit the time and press PRINT (

).

4. The display shows the current alibi memory serial number (this number appears on

tickets printed by the indicator). Edit this number and press PRINT (

).

8.1.3 Displaying Remaining Battery Capacity (Function 02)

To display remaining battery capacity:

Access the function menu and select function 02. The battery charge is displayed
as a percentage of remaining capacity. Press ESC (

) to exit.

8.1.4 Checking Calibration Seal (Function 48)

In order to check that calibration has not been tampered with. This can be verified by
means of the audit trail counter, which increments each time calibration parameters
are changed, and by means of a jumper (for more information, see section 4.4). Use
the procedure below to see the current value of the counter and the current position
of the jumper.

To check calibration seal and audit trail counter:

1. Access the function menu and select function 48.

2. The display shows the audit trail counter. Check to see that this counter is the

same as it was after the last authorized calibration. Press PRINT (

).

3. The display shows the status of the physical calibration seal. Press ESC (

) to exit.

8.1.5 Viewing Load Cell mV (Function 80)

To view an mV meter:

Access the function menu and select function 80. The indicator loads calibration
data, and displays mV transmitted by the load cell.

Service Operations and Testing

Testing the Indicator

VT200/220 Technical Manual, Rev 1.00.01 73 Doc # TM-VT200/220-EN

8.1.6 Viewing A/D Count (Function 81)

To view the A/D count:

Access the function menu and select function 81. The indicator shows the analog­to-digital converter internal count. Press ESC (

) to exit.

8.1.7 View Software Version Number and Date (Function 82)

To view the number and date of the current software version:

Access the function menu and select function 82. The indicator shows software
version number and the date it was released. Press ESC (

) to exit.

8.1.8 Locking and Unlocking Keys

To lock keys:

1. Access the setup menus and navigate to SETUP > SETUP 6.

2. Set one or more of the following parameters to 1:

 6.1 – SCALE
 6.2 – ZERO
 6.3 – TARE
 6.4 – P.TARE
 6.5 – PRINT
 6.6 – TOTAL
 6.7 – PCS

Keys you lock will not work (i.e. if a user presses them nothing will happen) until
you unlock them.

To unlock keys:

1. Access the setup menus and navigate to SETUP > SETUP 6.

2. Set the corresponding parameter to 0 (see the bulleted list above).

8.2 Testing the Indicator

8.2.1 Testing ROM/RAM Int e grity (Function 86)

In order to check the integrity of the unit’s ROM and RAM use the procedure below.

Note that partly-corrupted memory does not necessarily affect indicator’s operations,
and can be corrected. To learn how to correct memory errors, see the VT200/220
User’s Guide, section 7.3.

Service Operations and Testing

Testing the Indicator

VT200/220 Technical Manual, Rev 1.00.01 74 Doc # TM-VT200/220-EN

To test ROM/RAM integrity:

1. Access the function menu and select function 86.

2. One of the following messages are displayed:

 Err 01 – indicates that ROM data is corrupted.
 Err 02 – indicates that RAM data is corrupted.
 PASS – indicates that both ROM and RAM memory units are okay.

8.2.2 Testing the Keypad and Display (Function 90, 91)

To test that the display is working proper ly :

Access the function menu and select function 90. All digits display 0 through 9, in
sequence, and then all characters are displayed in sequence.

To test that the keypad is working prop erly :

Access the function menu and select function 91. The display blanks. When you
press a key, the scan code for that key is shown on the display. The scan codes
are as follows:

 30 – SCALE
 32 – TARE
 33 – P.TARE
 34 – PRINT
 35 – TOTAL
 37 - PCS

8.2.3 Testing Digital Input and Outputs (Function 93)

To test digital input and outputs (setpoints):

1. Access the function menu and select function 93.

2. The display shows the status of the inputs and outputs, as follows:

 The first digit from the left displays data received on the digital input

channel.

 The fifth digit from the left displays data sent on output 1.
 The sixth digit from the left displays data on output 2.

3. Press TOTAL (

) to toggle output 1 on and off. When it is on, the data sent should
be displayed in the fifth digit. If the output connects to another device, check if the
signal was received.

Service Operations and Testing

Testing the Indicator

VT200/220 Technical Manual, Rev 1.00.01 75 Doc # TM-VT200/220-EN

4. Press PCS (

) to toggle output 2 on and off. When it is on, the data sent should
be displayed in the sixth digit. If the output connects to another device, check if
the signal was received.

5. Connect a device to the digital input, and send a signal. See if the data appears in
the first digit.

8.2.4 Testing the Print Buffer (Function 94)

To test the print buffer:

Access the function menu and select function 94. An ASCII file (30h-7Fh) is
output to the printer port, with error control.

8.2.5 Testing Data Received on Both Serial Ports (Function 96)

To test data received on one or both serial ports:

1. Access the function menu and select function 96.

2. The display shows data received on COM ports, as follows:

 The two digits on the left (first and second digits) show data received on

COM 1.

 The two digits on the right (fifth and sixth digits) show data received on

COM 2.

3. Connect a PC or another device to one or both of the indicator’s ports, and begin
transmitting data. Watch the display to see if the data is received properly.

Troubleshooting

Errors, Causes and Remedies

VT200/220 Technical Manual, Rev 1.00.01 76 Doc # TM-VT200/220-EN

9 Troubleshooting

The indicator has no serviceable parts. Authorized technicians may:

 Respond to errors shown on the display (see chapter 9.1).
 Check load cell connections (see chapter 9.2).
 Check the power supply (see chapter 9.3).
 Check the digital outputs (see chapter 9.4).

9.1 Errors, Causes and Remedies

When an error or an unexpected event occurs, the indicator displays the message
Err xx, where xx is the error code. The following table explains all the error codes

and suggests what to do when each error message is displayed.

Error code Possible cause Actions to be taken

Err 01 Faulty EPROM memory. Contact manufacturer.

Err 02 Faulty CMOS RAM. Contact manufacturer.

Err 04 Calibration data corrupted due to faulty

EEPROM.

Contact manufacturer.

Err 05 The scale is not connected properly, or the

analog-to-digital converter is faulty.

Check the scale, cable and connectors. If
these are okay, contact manufacturer.

Err 06 Insufficient power. Check the indicator’s power supply.

Err 15 The indicator has been powered on after

an irregular shutdown: A power failure or
a soft reset.

Press ZERO (

).

Err 16 System time is wrong. Enter a new date and time. Refer to

section 8.1.2.

Err 20 The printer is not online because it is not

connected, not turned on, out of paper, or
for some other reason.

Make sure the printer is connected and
operational, and press PRINT (

) to
retry. If you can’t bring the printer online,
and you would like to use the indicator
anyway, press ZERO (

).

Err 26 Printer has no paper.

Add paper to the printer, and press PRINT
(

) to retry. If you can’t add paper, and

you would like to use the indicator
anyway, press ZERO (

).

Troubleshooting

Errors, Causes and Remedies

VT200/220 Technical Manual, Rev 1.00.01 77 Doc # TM-VT200/220-EN

Error code Possible cause Actions to be taken

Err 30 The host PC is not connected, or the

communication link failed.

Make sure the computer is connected, and
press PRINT (

) to retry. If there is some
problem with the computer, but you would
like to use the indicator anyway, press
ZERO (

).

Err 33 The host PC did not return a proper

response (an acknowledgement required
by the communication protocol).

Make sure the computer is connected, and
press PRINT (

) to retry. If there is some
problem with the computer, but you would
like to continue using the indicator
anyway, press ZERO (

).

Err 50 Sample used in counting has too few

items.

Remove the units from the scale and press
ZERO (

). Try to weigh a heavier group

of units.

Err 51 Sample used in counting weighs too little. Remove the item/s from the scale and

press ZERO (

). Try to weigh a heavier

item.

Err 55 Alibi memory full. The memory serial

number resets to 0000. From now on,
each new memory entry overwrites the
oldest record in alibi memory.

Press ZERO (

).

Err 56 Printing error. Tare is currently active, but

selected print format does not support net
weight.

Printout aborted. Printing stops and
returns to Weighing Mode.

Err 57 The weight measurement could not be

saved to alibi memory.

Press ZERO (

).

Err 67 The area of memory that stores the

accumulated total weight is corrupted.

Print/reset the total weight

Err 69 The area of memory that stores the

accumulated total weight has overflowed.
In other words, the total weight is too
large.

Print/reset the total weight

Troubleshooting

Checking Load Cell Connection

VT200/220 Technical Manual, Rev 1.00.01 78 Doc # TM-VT200/220-EN

9.2 Checking Load Cell Connection

If there appears to be a problem with the load cell connection:

 Check input and output resistance.
 Check resistance between any terminal and shield.
 Check load cell connection and cable.

9.3 Checking Power Supply

If the unit does not turn on:

 Check 9-15VDC power supply.
 Check the resettable fuse F4 on PCB 801.

9.4 Checking Digital Outputs

If the setpoints are not working properly:

 Test the setpoints (see chapter 8.2.3).
 Check 24VDC power supply.
 Check the resettable fuse F3 on PCB 801.

Appendix A: Technical Drawings

i. System Block Diagram

VT200/220 Technical Manual, Rev 1.00.01 79 Doc # TM-VT200/220-EN

Appendix A: Technical Drawings

i. System Block Diagram

24VDC

RS232

(ST8) J1

+5V

+5V

+5V

RS232

Driver

Watchdog

MCU

89C51RD

64KB EPROM

1KB RAM

32D I/O Lines

32KB EEPROM

Analog to

Digital

Conversion

&

BAT. TEST

+5V

JP1

Calibration

lock

2 Outputs

1 Input (Tilt)

Isolated

ST4

ST3

ST1

ST5

+5V

Power

Supply

Power

Input Filter

Power On-Off

PCB 801

PCB 761

PCB 765

PCB 715 (VT200)

OR

PCB 716 (VT220)

PCB 439

PCB 750

Sel. Current or
Voltage Output

JP1

+5V

OR

ST1

ST1

+5V

(ST9) J4

(

ST7) J2

(ST9) J4

(ST9) J4

Option

Analog to

Digital

Conv.

Analog to

Digital
Conv.

0-10VDC or
0-20mADC

Analog
Output

Max 10 X 350Ω
Load Cells

Option

+5V

32KB

EEPROM

& R.T.C

ST1

ST1

RS485
Driver

JP1

TER. RES

J3

(

ST2)

RS-485

ST2

7 Key & PWRNF
Membrane Ke

y

b.

6 Digits LED Display

(LCD Black)

ST1

ST2

+5V

Keyb.

&

LED (LCD)

Driver

ST2

Power Input

9-15VDC

350Ω
Load Cell

Appendix A: Technical Drawings

ii. Rear Panel Connections (Desktop Model)

VT200/220 Technical Manual, Rev 1.00.01 80 Doc # TM-VT200/220-EN

ii. Rear Panel Connections (Desktop Model)

1 2 3 4 5 6 7
+ - I1 CI O1 O2 +Co

COM 1

Pin Description

2 RX or DTR

3 TX

5 GND

D-Type Metal Case
(Shield)

POWER & SETPOINTS

Pin Description

1

2

Power

9-15 VDC

3 Input 1

4

Input

Common (-)

5 Output 1

6 Output 2

7

Output

Common (+)

COM 2

Pin Description

6 A

7 B

8

9

Termination

resistor
(120R)

D-Type Metal Case
(Shield)

LOAD CELL1

Pin Description

1 Excitation (-)

2 Sense (-)

3 Sense (+)

4 Excitation (+)

5 Signal (-)

6 Signal (+)

D-Type Metal Case
(Shield)

7

8

Calibration

Enable

COM 2

COM 1

Load Cell 2

or

Analog Output

Load Cell 1

DB9 fem

DB9 male

DB15

fem/male

DB15 fem

L

OAD CELL2 (DB15 F)

Pin Description

1 Excitation (-)

2 Sense (-)

3 Sense (+)

4 Excitation (+)

5 Signal (-)

6 Signal (+)

D-Type Metal Case
(Shield)

ANALOG OUTPUT

Pin Description

1,9 IOut (+)

2,10 V Out (+)

3,11

IOut (-) or

VOut (-)

4,12

Power in

+24 VDC

5,13

Power in

GND

D-Type Metal Case
(Shield)

NOTE: Short pins
8,9 for termination
resistor (120R)
connection

Appendix A: Technical Drawings

iii. Terminal Connections (Wall-Mount Model)

VT200/220 Technical Manual, Rev 1.00.01 81 Doc # TM-VT200/220-EN

iii. Terminal Connections (Wall-Mount Model)

JP1

Cal.

Lock

+
POWER
¯

+
INPUT
¯
OUT1

OUT2
COM

TX RX

SGND

SHIELD
+ SIG
– SIG
+ EX
+ SEN

- SEN

- EX

PCB 801

PCB 715

(VT200)

OR

PCB 716

(VT220)

PCB
765

PCB
761

PCB
439

PCB
750

A
B
A
B
SGND

JP1
TER. SEL.

SHLD
+SIG
–SIG
+EX
+SEN
–SEN
–EX

IOUT+

VOUT+

VOUT- or
IOUT-

+

POWER IN
(24 VDC)

SHLD

Select Current or

Voltage Output

OR

NOTE: PCBs are drawn as
viewed in the housing.

7 6 5

4

3 2

1

7 6 5

4

3 2

1

7 6 5

4

3 2

1

6 5

4

3 2

1

5

4

3 2

1

3

2

1

Appendix A: Technical Drawings

iv. Cabling Diagram

VT200/220 Technical Manual, Rev 1.00.01 82 Doc # TM-VT200/220-EN

iv. Cabling Diagram

Network
Biasing
Resistors

Chassis
Earth

470R

150R

470R

A

B

RT

+V

White

Shield

Slave #1

(

VT x00)

Slave #2

(

VT x00)

(Up to 30

slaves)

…

Slave #30

(VT x00)

A

B

A

B A B

RT

120R

T

ermination

Resistor

2X0.34mm2 twisted pair shielded

Max cable length: 1000m

RS485A CABLE CONNECTIONS

Power &

Setpoints

Connector

3

4

7

5

6

I

C

C

O

O

In

p

ut 1

Tilt Switch

Out

p

ut 1

Out

p

ut 2

Fuse

Digital

Outputs

Imax=100m

+

+

+

+

- -

-

-

L
O
A
D

L
O
A
D

Power

Supply

9-24VDC

Power

Supply

24VDC

DIGITAL OUTPUTS & TILT CONNECTIONS

To VTx00
RS232
Connector

T

o VTx00
RS232
Connector

Printer DB25 Male

PRINTER & PC CABLES

DB9

Metal
Case

3

5

2

3

5

2

DB9
fem

DB9

Metal
Case

DB9
fem

Shield

T

X GRN

GND BRN

DTR WHI

Shield

T

X GRN

GND BRN

DTR WHI

GRN RX

BRN GND

WHI

DTR

GRN RX

BRN GND

WHI

DTR

RX

GND

T

X

RX

GND

DT

R

3

7

20

2

5

3

3

7

2

3

7

2

Printer DB25 Male

OR

To

Serial

Printer

DB9 FEM OR

Max 15m

Max 15m

To
PC

DB25 Female

Maste

r

Appendix A: Technical Drawings

v. Printed Circuit Boards

VT200/220 Technical Manual, Rev 1.00.01 83 Doc # TM-VT200/220-EN

v. Printed Circuit Boards

PCB 761

ANALOG OUTPUT

PCB 439

RS485

PCB 765

2nd ANALOG INPUT

PCB 801

MAIN BOARD

Contacting Vishay Transducers

USA Israel

Vishay Transducers Americas

801 Sentous Avenue City of industry, CA 91748 USA
PH: [phone]; [phone]
FAX: [phone]
E-MAIL: [e-mail]

Vishay Transducers Israel

8A Hazoran Street, P.O. Box 8381,
Netanya 42506, Israel
PH: [phone]
FAX: [phone]
E-MAIL: [e-mail]

Asia

Vishay Transducers Taiwan (Asia except

China)

15 Fl, No. 86, Sec. 1 Sintai 5

th

Rd.
Shijr City, Taipei, 22102, Taiwan R.O.C
PH: [phone]
FAX: [phone]
E-MAIL: [e-mail]

Vishay Transducers China

No. 5 Binguan Nan Dao Youyi Rd., Hexi District,
Tianjin China, Code 300061
PH: [phone]
FAX: [phone]
E-MAIL: [e-mail]

Europe

Vishay Transducers Germany

Tatschenweg 1, 74078
Heilbronn, Germany
PH: [phone]
FAX: [phone]
E-MAIL: [e-mail]

Vishay Transducers UK

Stroudley Road, Basingstoke, Hampshire
RG24 8FW, United Kingdom
PH: [phone]
FAX: [phone]
E-MAIL: [e-mail]

Vishay Transducers France

16 Rue Francis Vovelle, 28000 Chartres, France
PH: [phone]
FAX: [phone]
E-MAIL: [e-mail]

Vishay Transducers Netherlands

Ramshoorn 7, P.O Box 6909, 4802 HX Breda
The Netherlands
PH: [phone]
FAX: [phone]
E-MAIL: [e-mail]