RADWAG ITKU-20-02-01-12-A User Manual

User Manual

of Postal scales

Manual number:
ITKU-20-02-01-12-A

MANUFACTURER OF ELECTRONIC
WEIGHING INSTRUMENTS

RADWAG Wagi Elektroniczne 26 – 600 Radom Bracka 28 Street - POLAND
Phone [phone], phone/fax. [phone]
Selling department [phone]

www.radwag.com

- 2 -

JANUARY 2012

- 3 -

TABLE OF CONTENTS

1. INTENDED USE ................................................................................................................. 5

2. PRECAUTIONS .................................................................................................................. 5

2.1. Maintenance ................................................................................................................ 5

2.2. Accumulator / battery pack .......................................................................................... 5

2.2.1. Power supply of weighing indicators in plastic casings ...................................... 6

2.2.2. Replacement of worn batteries .......................................................................... 7

2.3. Operation in a strong electrostatic fiel d ........................................................................ 8

3. WARRANTY CONDITIONS ................................................................................................ 8

4. MAIN DIMENS IONS ........................................................................................................... 9

5. UNPACKING AND ASSEMBLY ....................................................................................... 10

5.1. Scales of WPT/P 2 seri es .......................................................................................... 10

5.2. Scales of WPT/P 60 seri es ........................................................................................ 11

6. GETTING STARTED......................................................................................................... 12

7. KEYPAD ........................................................................................................................... 13

8. KEYS’ FUNCTIO NS ........................................................................................................ 13

9. INSCRIP TIO NS ON THE DISPLAY .................................................................................. 14

10. USER MENU .................................................................................................................. 14

10.1. Submenus ............................................................................................................... 14

10.2. Browsing user menu ............................................................................................... 15

10.2.1. Keypad .......................................................................................................... 15

10.2.2. Return to the weighing mode ......................................................................... 15

11. WEIGHING ..................................................................................................................... 16

11.1. Tarring .................................................................................................................... 17

11.2. Inscribing tare value ................................................................................................ 17

11.3. Zeroing .................................................................................................................... 18

11.4. Weighings in t wo ranges ......................................................................................... 18

11.5. Selection of basic weight uni t .................................................................................. 19

11.6. Temporarily selected unit ........................................................................................ 20

12. MAIN PARAMETERS ..................................................................................................... 21

12.1. Setting a filtering level ............................................................................................. 21

12.2. Median filter ............................................................................................................ 22

12.3. Autozero function .................................................................................................... 23

12.4. Tare function ........................................................................................................... 24

13. RS 232 PARAMETERS................................................................................................... 25

13.1. Baud rate ................................................................................................................ 25

13.2. Minimal mass threshold .......................................................................................... 26

14. OTHER PARAMETERS .................................................................................................. 26

14.1. Backlight function .................................................................................................... 27

14.1.1. Backlight for supplying from mains ................................................................ 27

14.1.2. Backlight for supplying from batt eri es ............................................................ 28

14.2. “Beep” signal – after pressi ng a key ........................................................................ 28

14.3. Automatic switch-off ................................................................................................ 29

14.4. Battery voltage level check ...................................................................................... 30

14.4.1. Checking the batteries .................................................................................. 30

14.4.2. Battery discharge pictogram .......................................................................... 31

14.4.3. Accumulator charging option ......................................................................... 31

14.4.4. Formatting rechargeable battery packs ......................................................... 32

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15. USER CALIBRATION ..................................................................................................... 33

15.1. Calibration ............................................................................................................... 33

15.2. Start mass adj us tment ............................................................................................ 35

16. COOPERATION WITH PRINTER ................................................................................... 36

17. COOPERATION WITH COMPUTER .............................................................................. 37

18. COMMUNICATION PROTOCOL .................................................................................... 38

18.1. General information ................................................................................................. 38

18.2. A set of commands for RS interfaces ...................................................................... 38

18.3. Respond message format ....................................................................................... 39

18.4. Command’s desc ri ption ........................................................................................... 39

18.4.1. Zeroing .......................................................................................................... 39

18.4.2. Tarring .......................................................................................................... 39

18.4.3. Get tare value ............................................................................................... 40

18.4.4. Send the stable result in basic unit ................................................................ 40

18.4.5. Send the result immediately in bas i c unit ...................................................... 41

18.4.6. Send the stable result in current unit ............................................................. 41

18.4.7. Send the result immediately in c urrent uni t .................................................... 42

18.4.8. Switch on continuous transmissi on i n basic unit ............................................ 43

18.4.9. Switch off continuous transmission in basic unit ............................................ 43

18.4.10. Switch on continuous transmission in current unit....................................... 43

18.4.11. Switch off continuous transmission in current unit ...................................... 44

18.4.12. Send all implemented commands ............................................................... 44

18.5. Manual printouts...................................................................................................... 44

18.6. Continuous transmis sion ......................................................................................... 45

18.7. Configuring printouts ............................................................................................... 45

19. ERROR COMMANDS ..................................................................................................... 46

20. TECHNICAL PARAMETERS .......................................................................................... 46

21. TROUBLE SHOOTING ................................................................................................... 47

22. ADDITIONAL EQUIPMENT ............................................................................................ 47

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1. INTENDED USE

Platform scales are designed for fast and precise measurements of
weighed loads masses and direct commercial settlements. Tarring in
full weighing range enables to determine net mass of weighed loads.
Additional display is additional equipment of scale. It is to control
mass of weighed load by another person.

Functions:

• backlight of display

• level of filtration

• median filter

• autozero function

• setting baud rate of transmission

• designation minimum mass for function operating

• automatic tare

• memory of tare

• inscribing tare value

• automatic scale switch-off

• user calibration

2. PRECAUTIONS

2.1. Maintenance

A. Please, read carefully this user manual before and use the device

according to its intended use.

B. Devices that are to be withdrawn from usage should be sent back to

the producer or in case of own utilization do it according to the law.

2.2. Accumulator / battery p ack

Scales aquipped with indicator PUE C/31 (plastic casing) are devices
designed to be supplied from NiMH batteries (nickel-metal-hydrogen) with
rated voltage of 1.2V, size R6 and capacities from 1800 to 2800mAh
charged while connected to mains without stopping operation.

- 6 -

The device connected to mains inteligently monitors the battery state and
charges it if possible. After sudden lack of power supply from the mains
the device automatically switches to accumulator without breaking
operation.

In case of an elongated storage period in low
temperatures, it is not allowed the full discharge
of the accompanied batteries.

The equipment including accumulators does not belong
to your regular household waste. The European legislation
requires that electric and electronic equipment be collected
and disposed separately from other communal waste with
the aim of being recycled.

Notice:
Some symbols on accumulators identify harmful elements/compounds:
Pb = lead,
Cd = cadmium,
Hg = mercury.

2.2.1. Power supply of weighing indicators in plastic casings

Indicators in plastic casing are intended to be supplied from a power
adapter or from NiMH rechargeable battery pack (standard equipment).
New rechargeable batteries should be formatted according to the
description in the chapter 14.4.4. of this manual.

Alternatively, you can use to power the device R6 size standard non­rechargible batteries. If you want to use normal batteries instead of
rechargeable ones, proceed as follows:

• Before installing non-rechargeable batteries turn on the device
and set <5.5.CHr6> to <no>, to switch off charging.

• Then install the batteries.

Installing batteries without changing <5.5.CHr6> to <no>
may cause damage of batteries and the indicator.

- 7 -

2.2.2. Replacement of worn batteries

Users have the ability to replace worn out batteries to new ones in
weighing indicators PUE C/31 (plastic casing).

Procedure:

• Open the lid of the chamber for batteries placed in the bottom
of the indicator casing:

• Remove discharged and then insert new batteries into the chamber,
according to given polarity (+/-):

• Close the lid of the chamber for batteries:

- 8 -

In PUE C/31H and PUE C/31H/Z weighing indicators
(stainless steel housing) the worn out accumulator can
be exchanged to a new one by the authorized service
of the manufacturer.

2.3. Operation in a strong electrostatic field

If the device is about to operate in a strong electrostatic field (e.g. printing
houses etc.) it should be connected to the earthing. Connect it to the

clamp terminal signed

.

3. WARRANTY CONDITIONS

A. RADWAG is obliged to repair or change those elements that

appears to be faulty because of production and construction
reason,

B. Defining defects of unclear origin and outlining methods of

elimination can be settled only in participation of a user and
the manufacturer representatives,

C. RADWAG does not take any responsibility connected with

destructions or losses derives from non-authorized or inappropriate
(not adequate to manuals) production or service procedures,

D. Warranty does not cover:

• Mechanical failures caused by inappropriate maintenance of
the device or failures of thermal or chemical origin or caused
by atmospheric discharge, overvoltage in mains or other
random event,

• Inappropriate cleaning.

E. Loss of warranty appears after:

• Access by an unauthorized service,

• Intrusion into mechanical or electronic construction

of unauthorized people,

• Removing or destroying protection stickers.

F. The detailed warranty conditions one can find in warranty

certificate.

- 9 -

Scales of WPT/P 2 series

Scales of WPT/P 60 series

G. Contact with the central authorized service:

[phone] ext. 106 or 107.

4. MAIN DIMENSIONS

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5. UNPACKING AND ASSEMBLY

5.1. Scales of WPT/P 2 series

Unpack and put the scale on a flat even stable surface far away from
sources of heat and then:

• Remove transport protection:

• Set the pillar with additional

display vertically:

• Screw down the pillar to the scale basis:

• Turn the display head:

- 11 -

5.2. Scales of WPT/P 60 series

Unpack and put the scale on a flat even stable surface far away from
sources of heat and then:

A. Remove transport protection:

B. To attach the pillar to the scale body:

• Screw down the pillar handler to the platform:

• Stretch delicately the cable so it did not touch the ground after

mounting:

- 12 -

• The surplus cable wind and place inside the
pillar as show below:

Put the indicator with the hendler on the
pillar and tighten up the handwheels:

6. GETTING STARTED

• After unpacking and mounting the scale level it out. Use levelling legs
and the level condition indicator installed in the basis of the scale.

• Turn the device on using the
for about 0.5 sec,

• Wait for the test completion,

key – keep pressing the key

- 13 -

• Then you will see zero indication and pictograms:

- zero indication

- stable result

kg - weight unit

• If the indication is not zero press

7. KEYPAD

8. KEYS’ FUNCTIONS

Switching on/off

Function key (operation mode selection)

Sending a weighing result to RS232

key.

Zeroing

Tarring

Notice:
After pressing

+ keys’ functions changes. The way of operation

in this mode is described in details further in this manual.

- 14 -

P1 rEAd

P 1.1 Fil

| 2 P 1.2 Auto

|

YES

P 1.3 tArA

|

no

P 1.4 Fnnd

|

no

P2 Prnt

P2.2 S_Lo

| P2.3 bAud

|

9600

P3 Unit

P3.1 StUn

|

kg

P5 othr

P5.1 bL

|

Auto

P5.2 bLbt

|

70

P5.3 bEEP

|

YES

P5.4 t1

|

Auto

P5.5 CHr6

|

YES

P6 CAL

P6.1 St_u

|

* FUNKCJA *

P6.2 uCAL

|

* FUNKCJA *

9. INSCRIPTIONS ON THE DISPLAY

No Text string Description

1. FIL

2. bAud

3. Auto

4. t1

5.

6.

7. kg (g)

8.

9. Net

Filter level
Transmission baud rate
Autozero correction
Power save – time to switch off while no operation
Indication in autozero zone (indication = exact zero)
Stable result (ready to read)
Operation mode – weighing
Rechargeable battery pack or battery discharged (BAT-LO)
Tare function has been used.

10. USER MENU

10.1. Submenus

User’s menu is divided into 5 basic submenus. Each group has its own
characteristic name preceded by the letter P and a number.

- 15 -

Entering main menu

Inscribing tare value
Battery / accumulator state monitoring

Toggling between gross / net values

10.2. Browsing user menu

Use scale’s keys to move inside the menu.

10.2.1. Keypad

+

+

+

+

10.2.2. Return to the weighing mode

Increasing a digit value by „1”
moving down in the menu

Selecting the parameter or changing the value of a
selected parameter

Entering the selected submenu or activating a parameter
for changes

Confirmation (enter)

Leaving without changes or reaching a higher level of the
menu

The changes that have been introduced should be saved
in order to keep them in the memory for good.

While leaving parameters press
<SAuE?> appears on the display. Then press:
– to save changes or – to leave without changes.

key until the text

- 16 -

11. WEIGHING

Put a load you want to weigh on the weighing pan. When the
pictogram appears it means that the result is stable and ready to read.
In order to assure long-term operation and appropriate measurements of
weighted loads following precautions should be taken into consideration:

• Loads should be placed on the pan delicately and carefully
in order to avoid mechanical shocks:

• Loads should be placed centrally on the pan (errors caused by
eccentric weighing are outlined by standard PN-EN 45501
ch. 3.5 and 3.6.2):

• Do not load the pan with concentrated force:

• Avoid side loads, particularly side shocks should be avoided

- 17 -

11.1. Tarring

In order to determine the net mass put the packaging on the pan.
After stabilising press -

(Net pictogram will be displayed in the left

upper corner and zero will be indicated).

After placing a load on the weight pan net mass will be shown.
Tarring is possible within the whole range of the scale. After unloading
the pan the display shows the tarred value with minus sign.

Notice:

Tarring cannot be performer when a negative or zero value is being
displayed. In such case Err3 appears on the display and short audible
signal will be emitted.

11.2. Inscribing tare value

You can also inscribe a tare value. While in weighings mode press:

• Press simultaneously and ,

• You will see :

- 18 -

• Using and set the tare value,

• Press

,

• Program returns to weighings mode. The inscribed tare
value can be seen on the display with „–” sign,

• Tare can be inscribed anytime in weighings mode.

Notice:

You cannot inscribe a new tare value when the tare value in memory
is greater than zero. In the case of trying this the <Err3> message
will be displayed and short audible signal will be emitted.

11.3. Zeroing

To ZERO the scale press:
The scale will display zero and following pictograms:

.

and .
Zeroing is only possible within the scope of ±2% of full scale.
While zeroing outside the scope of ±2% you will see Err2.
Zeroing is possible only in stable state.

Notice:

Zeroing is possible only within the ±2% interval of the maximal range.
If zeroing is performed beyond this range the <Err2> message and
short audible signal will be emitted.

11.4. Weighings in two ranges

Switching between the I range and the II range happens automatically
(exceeding Max of the I range). Weighings in the second range is
signalled by a pictogram in the top left corner of the display.

Then weighings is done with the accuracy of the II range to the moment
of returning to zero (autozero range

) where the scale switches back

to the I range.

- 19 -

11.5. Selection o f b asic weight unit

This function is used to set weight unit the scale will start with.

Procedure:

• Enter the submenu <P3.Unit> and then:

• press

, until the expected unit appears on the display:

Options:

A. When the basic unit is [kg], users can toggle between:

[kg, lb, N],for verified scales [lb] is not accessible,

B. If the basic unit is [g], users can toggle between:

[g, ct, lb], for verified scales [lb] is not accessible,

- 20 -

• After you select the unit press , the scale returns to:

• Return to weighing according to chapter - 10.2.2.

Notice:

After turning on the scale always sets the basic unit.

11.6. Temporarily selected unit

This function is used to set weight unit the scale will use temporarily
until the next power off or next selection.

Procedure:

• Press and then:

• After you select the unit you want come back to weighing procedure.

- 21 -

Options:

A. When [kg] is a basic unit, users can select following units:

[kg, lb, N], [lb] is not accessible for verified scales.

B. When [g] is a basic unit, users can select following units:

[g, ct, lb], [lb] is not accessible for verified scales.

12. MAIN PARAMETERS

Users can adjust the scale to external ambient conditions (filtering level)
or particular needs (autozero operation, tare memory). This parameters
are placed in <P1.rEAd> submenu.

12.1. Setting a filte ring level

Procedure:

• Enter the submenu <P1.rEAd> and then:

1 - 4 - level of filtering

• By pressing select the filtering level you need.

- 22 -

Notice:

Filtering level influences the time of stabilization. The higher the filtering
level is the longer stabilization time is needed.

Return to weighing:

See - 10.2.2.

12.2. Median filter

This filter eliminates short changes (impulses) of measure signal
(e.g. shocks).

Procedure:

• Enter the submenu <P1.rEAd> and then:

Fnnd no - filter disabled
Fnnd YES - filter enabled

Return to weighing:

See - 10.2.2.

- 23 -

12.3. A u to zero function

The autozero function has been implemented in order to assure precise
indications. This function controls and corrects „0” indication. While the
function is active it compares the results continuously with constant
frequency. If two sequentional results differ less than the declared
value of autozero range, so the scale will be automatically zeroed
and the pictograms

and will be displayed.

When AUTOZERO is disabled zero is not corrected automatically.
However, in particular cases, this function can disrupt the measurement
process e.g. slow pouring of liquid or powder on the weighing pan. In this
case, it is advisable to disable the autozero function.

Procedure:

• Enter the submenu <P1.rEAd> and then:

Fnnd no - filter disabled
Fnnd YES - filter enabled

Return to weighing:

See - 10.2.2.

- 24 -

tArA

AtAr

-

automatic tare function on and is stored in balance
memory after unplugging it from mains

tArA

tArF

-

tare memory function – stores last value of tare in

display.

12.4. Tare function

This parameters enables users to configure a tare function.

Procedure:

• Enter the submenu <P1.rEAd> and then:

tArA no

-

automatic tare function off

balance memory. It is automatically displayed after
starting the balance. Value of tare is displayed with
minus sign, and there is Net symbol indicated on the

Return to weighing:

See - 10.2.2.

- 25 -

13. RS 232 PARAMETERS

External devices connected to RS 232C have to be supplied from the
same mains and common electric shock protection. It prevents from
appearing a potential difference between zero leads of the two devices.
This notice does not apply to the devices that do not use zero leads.

Transmission parameters:

• Baud rate - 2400 – 38400 bit / s

• Data bits - 8

• Stop bits - 1

• Parity control - no

13.1. Baud rate Procedure:

• Enter the submenu <P2.Prnt> and then:

Return to weighing:

see 10.2.2.

- 26 -

13.2. Minimal mass threshold

This function is necessary while working with automatic tare. Automatic
tarring will not be applied until the indication (gross) is lower than the
value inscribed in S_Lo parameter.

Procedure:

• Enter the submenu <P2.Prnt> and then:

Return to weighing:

see 10.2.2.

14. OTHER PARAMETERS

The user can set parameters which influence the scale operation.
They are gathered in the submenu <P5.othr> e.g. backlight and beep
signal. Enter this submenu <P5.othr> according to chapter 10.2.

- 27 -

bL

no

-

backlight switched off

bL

YES

-

backlight switched on

bL

Auto

-

backlight switched off automatically if indication
becomes stable for about 10s

14.1. Backlight function

Program recognises the way the scale is supplied (mains, battery)
and automatically selects the way of operating on the backlight:

bl – for mains,
blbt – for batteries or rechargeable battery pack.

14.1.1. Backlight for supplying from mains Procedure:

• Enter the submenu <P5.othr> and then:

Return to weighing:

See 10.2.2.

Notice:

When bl=Auto, and the indication has not changed for 10s, the backlight
is automatically switched off. The backlight is switched on again
automatically after the result changes.

- 28 -

14.1.2. Backlight for supplying from batteries

The user can change the intensity of backlight from 0% to 100%.
The lower the intensity is the longer the scale operates without recharging
or exchanging batteries. When the intensity is set this function works as
AUTO (described above).

Procedure:

• Enter the submenu <P5.othr> and then:

Return to weighing:

See 10.2.2.

Notice:

The more intense the backlight is the shorter the scale operates
on batteries.

14.2. “Beep” signal – after pressing a key Procedure:

• Enter the submenu <P5.othr> and then:

- 29 -

bEEP no - switched off
bEEP YES - switched on

Return to weighing:

See 10.2.2.

14.3. A u to m atic switch-off

This function is essential to save the battery power. The scale is switched
off automatically when (function t1 = YES) no weighing appears in 5
minutes. (no changes on the display). In case when this function disrupts
the operation (e.g. long time weighing procedures) or while working with
connection to mains, switch off this function.

Operation according to the power supply:

Setting

t1 = 0 disabled disabled
t1 = YES enabled enabled
t1 = Auto * disabled enabled

Mains Batteries/accumulator

Operation

* automatic enabling/disabling according to the source of power.

- 30 -

Procedure:

• Enter the submenu <P5.othr> and then:

Returnto weighing:

See 10.2.2.

14.4. Battery voltage level check

While supplying from batteries too low level of voltage is measured by
software the pictogram

is displayed. It means that charging or

exchanging batteries is required.

14.4.1. Checking the batteries

This function is to check the level of battery supply. It works only if:

• Weighing mode is set,

• Battery supply is set in parameters.

- 31 -

Procedure:

After displaying the level of batteries (in per cents) the program returns
to weighing.

14.4.2. Battery dis charge pictogram

The symbol (bat low) switches on when the voltage level drops to 18%
of the accepted level of voltage. It means that charging or exchanging
batteries is required.

Low level of batteries:

• Pictogram on the display,

• After one time the device will automatically switch off to protect

the batteries from distructable discharging,

• Charging is signalled by (blinking period about 2 seconds)

on the display.

14.4.3. Accu m u lator charging option

This function allows to switch on charging algorithm for NiMH
batteries (for indicators plastic casing):

a) Parameter <CHr6> set to <no>:

• Pictogram

• During software initializing, after turning on „bAtt”.

b) Parameter <CHr6> set to <YES>:

• Pictogram
charging is enabled,

does not appear, charging disabled,

blinks slowly (period about 2 seconds),

- 32 -

• Message „nImh” appears on the display,

• In case of damaging accumulators or lack of it the pictogram

blinks quickly (period about 0.5 sec).

Notice:

Indicators are equipped with the set of rechargeable batteries NiMH R6
(AA) and power adapter.

Procedure:

• Enter the submenu <P5.othr> and then:

CHr6 YES - enabled
CHr6 no - disabled

Return to weighing:

See 10.2.2.

14.4.4. Formatting rechargeable battery packs Postal scales with indicators in plastic cases are intended to supply from

power adapters (standard equipment). It is possible to supply them from
NiMH AA/R6 rechargeable batteries or R6 batteries.

- 33 -

They need formatting after first powering up. It is crucial for batteries
lifetime to undertake this process. Formatting consist in charging and
total discharging (without meantime charging).

Procedure:

1. Supply the indicator from mains.

2. Charge batteries for 12 hours (time of charging 2200mAh batteries).

3. After 12 hours unplug from mains.

4. Use the device up to the moment of self powering down.

5. Repeat the process of charging starting from point 1.

Notice:

They reach their optima capacity after three cycles of full charging and
discharging.

15. USER CALIBRATION

Only for non-verified scales

Confirmation of high accuracy of weighing requires periodical correcting
of calibration factors in the scale memory – this is adjustment of the scale.
Calibration should be performed when we start weighing or dynamic
change of temperature occurs. Before starting calibration remove
loads from the pan.

15.1. Calibration Procedure:

• Enter the submenu <P6.CAL> and then:

- 34 -

• Following inscriptions will appear

• A new start mass is adjusted during this period of time.

After that a mass of calibration weight is shown (e.g. 3 000kg).

• Put a weight of the displayed mass value on the pan and press
The calibration process will start which is signalled by the message:

• After completion of the process of calibration the following screen
will appear:

• Take off the weight , then the following sequence of screens
will appear:

.

• Calibration process can be terminated anytime by pressing
which is signalled by the following message on the display:

- 35 -

• Return to weighing performing the procedure of saving parameters.

Caution:

If the calibration process (span adjustment) lasts longer than 15 the
<Err8> message will be displayed and short audible signal will be

emitted. Press

to perform calibration again with more stable

ambient conditions!

15.2. Start mass adjustment

If the scale does not require the full calibration process sit is possible
to adjust only a new start mass.

Procedure:

• Enter the submenu <P6.CAL> and then:

• The display will show the following information:

• After the completion of the start mass adjustment the following

screen will appear:

- 36 -

• The process of start mass adjustment can be terminated by pressing

, which is signalled on the display:

• Return to weighing performing the procedure of saving parameters.

Caution:

If the start mass adjustment lasts longer than 15 the <Err8> message will
be displayed and short audible signal will be emitted. Press

to perform

calibration again with more stable ambient conditions!

16. COOPERATION WITH PRINTER

Each time the
units is sent to RS 232 interface. One of thermal printer in KAFKA series
can cooperate with each platform scales:

a) KAFKA

Only result of weighing with mass unit can be printed.

b) KAFKA 1/Z

This printer is equipped with an internal real time clock.
Both date and time can be printed.

c) KAFKA SQ S

This printer is equipped with an internal real time clock and
possibility of running statistics from measurements. Statistic
contents: quantity of samples, sum of masses of all samples,
average value, standard deviation, variation factor, min value,
max value, difference max - min.

key is pressed a current mass value together with mass

- 37 -

- manually

-

after pressing key,

- in continuous way

-

after sending an control command

- on the request from
the computer

-

After sending a control command

Cable diagrams:

Cable drawing scale - printer (Kafka)

17. COOPERATION WITH COMPUTER

Sending weighing results to the computer can be done:

These scales can cooperate with „EDYTOR WAG” program. The indicator
window comprises the most important information from the scale display.
The program allows to configure easily, e.g. design printouts, edit
parameters. A precise description is issued in the „Help” file that
accompanies the program.

Cable diagrams:

Cable drawing connecting scale and computer

- 38 -

Z

S

SI

C1

C0

CU1

PC

18. COMMUNICATION PROTOCOL

18.1. General information

A. A character protocol scale-terminal has been designed for

communication between RADWAG scales and external devices
via RS-232 interface.

B. It consists of commands sent from an external device to the scale

and a responses from a scale.

C. Responses are sent every time after receiving a command

(reaction for any command).

D. Using commands allows users to receive some information about

the state of scale and/or influence the operation e.g.:

• Requesting weighing results,

• Display control,

18.2. A set of commands for RS interfaces

Commands Description of commands

Zeroing

T
TO

SU
SUI

CU0

Notice:

1. Each command have to be terminated in CR LF;

2. The best Policy for communication is not sending another
command until the former answer has been received.

Tarring
Get tare
Send the stable result in basic unit
Send the result immediately in basic unit
Send the stable result in current unit
Send the result immediately in current unit
Switch on continuous transmission in basic unit
Switch off continuous transmission in basic unit
Switch on continuous transmission in current unit
Switch off continuous transmission in current unit
Send all implemented commands

- 39 -

XX_D CR LF

XX_I CR LF

XX _ ^ CR LF

XX _ OK CR LF

ES_CR LF

error while executing command – time limit for stable result

Z_A CR LF

- command accepted and in progress

-

Z_A CR LF

- command accepted and in progress

-

Z_A CR LF

- command accepted and in progress

-

Z_I CR LF

- command comprehended but cannot be executed

18.3. Respond message format

After sending a request message you can receive:

XX_A CR LF

XX _ v CR LF

command accepted and in progress
command completed (appears only after XX_A)
command comprehended but cannot be executed
command comprehended but time overflow error appeared
command comprehended but the indication below the
Command done
Command not comprehended

XX _ E CR LF

exceeded (limit time is a descriptive parameter of the scale)

XX - command name
_ - substitutes spaces

18.4. Command’s description

18.4.1. Zeroing

Syntax Z CR LF
Possible answers:

Z_D CR LF

Z_^ CR LF

Z_E CR LF

command completed

command comprehended but zero range overflow appeared

time limit for stable result exceeded

18.4.2. Tarring

Syntax: T CR LF
Possible answers:

- 40 -

T_A CR LF

- command accepted and in progress

-

T_A CR LF

- command accepted and in progress

-

T_A CR LF

- command accepted and in progress

-

T_I CR LF

- command comprehended but cannot be executed

TO_TARA CR LF

- command executed

S_A CR LF

- command accepted and in progress

-

S_I CR LF

- command comprehended but cannot be executed

S_A CR LF
MASS FRAME

- command accepted and in progress

- mass value in basic unit is returned

T_D CR LF

T_v CR LF

T_E CR LF

command completed

command comprehended but tare range overflow appeared

time limit for stable result exceeded

18.4.3. Get tare value

Syntax: TO CR LF
Possible answers:

Frame format:

1 2 3 4 5-6 7-15 16 17 18 19 20 21

T O space stability space tare space unit CR LF

Tare - 9 characters with decimal point justified to the right
Unit - 3 characters justified to the left

18.4.4. Send the stable resu lt in basic unit

Syntax: S CR LF
Possible answers:

S_E CR LF

time limit for stable result exceeded

- 41 -

SI_I CR LF

- command comprehended but cannot be executed at the
moment

MASS FRAME

- mass value in basic unit is returned

Frame format:

1 2-3 4 5 6 7-15 16 17 18 19 20 21

S space stability space sign mass space unit CR LF

Example:
S CR LF – computer command

S _ A CR LF - command accepted and in progress
S _ _ _ _ - _ _ _ _ _ _ 8 . 5 _ g _ _ CR LF – command done,

mass value in basic unit is returned.

18.4.5. Send the result immediately in basic unit

Syntax: SI CR LF
Possible answers:

Frame format:

1 2 3 4 5 6 7-15 16 17 18 19 20 21

S I space stability space sign mass space unit CR LF

Example:
S I CR LF – computer command

S I _ ? _ _ _ _ _ _ _ 1 8 . 5 _ k g _ CR LF - command done, mass

value in basic unit is returned immediately.

18.4.6. Send the stable resu lt in current unit

Syntax: SU CR LF
Possible answers:

- 42 -

SU_A CR LF

- command accepted and in progress

-

SU_I CR LF

- command comprehended but cannot be executed

SU_A CR LF
MASS FRAME

- command accepted and in progress

- mass value in current unit is returned

SUI_I CR LF

- command comprehended but cannot be executed

MASS FRAME

- mass value in current unit is returned immediately

SU_E CR LF

timeout while waiting for stable results

Frame format:

1 2 3 4 5 6 7-15 16 17 18 19 20 21

S U space stability space sign mass space unit CR LF

Example:
S U CR LF – computer command

S U _ A CR LF - command accepted and in progress
S U _ _ _ - _ _ 1 7 2 . 1 3 5 _ N _ _ CR LF - command done, mass

value in current unit is returned.

18.4.7. Send the result immediately in current unit

Syntax: SUI CR LF
Possible answers:

Frame format:

1 2 3 4 5 6 7-15 16 17 18 19 20 21

S U I stability space sign mass space unit CR LF

Example:
S U I CR LF – computer command

S U I ? _ - _ _ _ 5 8 . 2 3 7 _ k g _ CR LF - command executed

and mass returned

- 43 -

C1_I CR LF

- command comprehended but cannot be executed

C1_A CR LF
MASS FRAME

- command comprehended and in progress

- mass value in basic unit is returned

C0_I CR LF

- command comprehended but cannot be executed

C0_A CR LF

- command comprehended and executed

CU1_I CR LF

- command comprehended but cannot be executed

CU1_A CR LF
MASS FRAME

- command comprehended and in progress

- mass value in current unit is returned

18.4.8. Switch on continuous transmission in basic unit

Syntax: C1 CR LF
Possible answers:

Frame format:

1 2 3 4 5 6 7-15 16 17 18 19 20 21

S I space stability space sign mass space unit CR LF

18.4.9. Switch off continuous transmission in basic unit

Syntax: C0 CR LF
Possible answers:

18.4.10. Switch on continuous transmission in current unit

Syntax: CU1 CR LF
Possible answers:

Frame format:

1 2 3 4 5 6 7-15 16 17 18 19 20 21

S U I stability space sign mass space unit CR LF

- 44 -

CU0_I CR LF

- command comprehended but cannot be executed

CU0_A CR LF

- command comprehended and executed

18.4.11. Switch off continuous transmission in current unit

Syntax: CU0 CR LF
Possible answers:

18.4.12. Send all implemented commands

Syntax: PC CR LF
Possible answers:
PC_- >_Z,T, TO,S,SI,SU,SUI,C1,C0,CU1,CU0,PC – command executed,

the indicator have sent all the implemented commands.

18.5. Manual printouts

Users can general manual or automatic printouts from the scale. Manual
printouts can be performed after loading the pan and stabilizing indication

by pressing

.

Notice:

If a scale is verified printouts of immediate values are blocked.

Format frame:

1 2 3 4 -12 13 14 15 16 17 18

stability space sign mass space unit CR LF

- 45 -

Stability character

[space] if stable

[v] if fan indication below the range

sign

[space] for positive values or
[-] for negative values

mass

9 characters justified to the right

unit

3 characters justified to the left

command

3 characters justified to the left

[?] if not stable
[^] if an indication over the range

Example 1:
_ _ _ _ _ _ 1 8 3 2 . 0 _ g _ _ CR LF – the printout generated from

the scale after pressing ENTER/PRINT.

Example 2:
? _ - _ _ _ _ 2 . 2 3 7 _ l b _ CR LF - the printout generated from

the scale after pressing ENTER/PRINT.

Example 3:
^ _ _ _ _ _ _ 0 . 0 0 0 _ k g _ CR LF - the printout generated from

the scale after pressing ENTER/PRINT.

18.6. Continuous transmission

The indicator can work in a continuous transmission mode.
It can be switched on using RS232 commands (see 20.4).

18.7. Configuring printouts General information

If some information included are redundant or not sufficient and there
is a necessity of changes one can design their own protocol format in
EDYTOR WAG computer program. This piece of software is accessible
in: http://www.radwag.com

- 46 -

Err2

-

Value beyond the zero range

Err3

-

Value beyond the tare range

Err4

-

Calibration mass or start mass beyond the acceptable

Err8

-

Exceeded the time for tarring, zeroing, start mass
NULL

-

Zero value from the AD converter

FULL2

-

Measurement range overflow

LH

-

Start mass error, the mass on the weighing platform is
beyond the acceptable range (-5% to +15% of start mass)

Net / Gross weight

3,5 / 4,8kg

15,5 / 17,8kg

19. ERROR COMMANDS

range (±1% for weight, ±10 for start mass)

adjustment or span adjustment

Notice:

1. Errors: Err2, Err3, Err4, Err8, null, that appear on the display
are also signalled by a short beep sound (about 1 sec.);

2. Error FULL2 that appears on the display is also signalled by
a continuous sound until the cause of error disappears.

20. TECHNICAL PARAMETERS

Scale type: WPT/P 2 WPT/P 60

Max capacity 2kg 60kg
Min capacity 5g 100g
Reading accuracy 1g 20g
Verification scal e i nt erval 1g 20g
Range of tare -2kg -60kg
Pan size 230 x 160mm 400 x 500m m
Power supply 230V 50Hz/11V AC and 6xAA (NiMH)
Temperature of work
Average operation when supplied

from batteries
Display LCD with backlight

0°C to +40°C

35 hours (average time)

Package dimensions 400 x 380 x 110mm 720 x 580 x 220mm

- 47 -

21. TROUBLE SHOOTING

Problem Cause Solution

Connect to mains or
change batteries

Check the correctness of
installation (polarization)

In „othr” submenu change
„5.4 t1” to „no”

Unload the pan. Then the
scale will indicator zero.

Turning on does not
work

The scale turns off
automatically

After turning on „LH”
message on the display

Discharged batteries.

No batteries (not installed or
improperly installed)

„t1” set to „YES” (Power
save)

Loaded weight pan during
powering up

22. ADDITIONAL EQUIPMENT

Accessories:

• KAFKA printer cable - P0136,

• Computer cable - P0108,

• EPSON printer cable - P0151,

• Power cord for car lighter 12V DC - K0047,

• Thermal printer - KAFKA,

• Dot matrix printer - EPSON,

• Additional display in plastic casing for PUE C/31- WD- 4/1

(accessible with balance as complete set only),

• RS232 / RS485 converter for PUE C/31 – KR-01,

• RS232 / Ethernet converter for PUE C/31 - KR-04,

Computer programs:

• “EDYTOR WAG” computer program,

• "RAD-KEY" computer program,

• "PW-WIN" computer program.

- 48 -

MANUFACTURER

OF ELECTR ONIC WEIGHING

INSTRUMENTS

RADWAG WAGI ELEKTRONICZNE

26 – 600 Radom, Bracka 28 Street

POLAND

Tel. [phone], tel./fax. + 48 48 385 00 10

Selling departament + 48 48 366 80 06

www.radwag.com