Avery Weigh-Tronix WP-234 User Manual

WP-234 Printer
User’s Manual

WP-234 Printer User’s Manual2

05/27/04 234_U.P65 PN 29623-0014H e 2 Printed in USA

Risk of electrical shock. Do not remove cover. No user service­able parts inside. Refer servicing to qualified service personnel.

Weigh-Tronix reserves the right to change

specifications at any time.

CAUTION

EUROPEAN COUNTRIES

WARNING

This is a Class A product. In a domestic environment this product

may cause radio interference in which the user may be required to

take adequate measures.

WP-234 Printer User’s Manual 3

Table of Contents

Specifications .......................................................................... 4

Introduction ............................................................................. 7

Installation ............................................................................... 7

Installing the Paper .................................................. 7

To Remove the Paper Roll ..................................... 10

Operation .............................................................................. 11

Connecting and Powering Up Your Printer ............ 11

Maintenance .......................................................................... 11

Changing the Printer Ribbon ................................. 12

Inserting a Ribbon with Paper in the Printer .......... 13

Printer Test and Setup .......................................................... 14

Printer Test ............................................................. 14

Accessing the Setup Menu ..................................... 15

CONFIGURE . . . ..................................................... 15

CUSTOM. . . ............................................................ 18

SETCLOCK. . . ........................................................ 22

RESET SEQ# .......................................................... 23

Communication .................................................................... 24

RS-232 Serial Version ............................................ 24

20 mA Current Loop Version .................................. 25

Control Codes ........................................................ 26

WP-234 Printer User’s Manual4

Available BAUD rates: 300, 600, 1200, 2400, 4800,
9600, 19200

Voltage levels:

RS-232C: -9 Volts to + 9 Volts
20mA current loop

Character format:

ASCII character set—10 bits per character
required,
7 or 8 of which are data bits
Parity selection is even or odd for 7 data bits.
Busy signal - Clear to Send (CTS, XON-XOFF)

1.5K standard

Impact dot matrix

5 x 5, 5 x 7, 5 x 8 dot matrix

24 column: 12.8 characters/inch
32 column: 17 characters/inch
40 column: 21 characters/inch

7.4 lines per inch

130 lines per minute for 24 column
110 lines per minute for 32 and 40 column

Table top: 2.25"W x 2.75"D; 0.44" I.D.
Panel mount: 2.25"W x 1.25"D

1.5 Watts (idle), 15 Watts maximum while printing

9 VAC (120 VAC stepdown converter incl.)
Multi-national converters optional

Optional 9-12 VDC
140mA idle, 1 amp with 100% printing, 5.5 amp
peak with 100% printing

4.6"W x 5.0"L x 2.2"H

5°C - 40°C,41°F - 104°F

Interface-Serial

Character Buffering

Print Method

Character Matrix

Character Spacing

Line Feed Spacing

Print Speed

Paper

Power

AC Voltage

DC Voltage

External Dimensions

Operating Temp.

Specifications

WP-234 Printer User’s Manual 5

1,500,000 lines mean character before failure.

Black- 200,000 characters
Purple-250,000 characters

Large roll - 12,500 lines
Small roll - 3,000 lines

Ribbon life

Paper

Print Head Life

WP-234 Printer User’s Manual6

WP-234 Printer User’s Manual 7

Installing the
Paper

Introduction

Installation

The Model WP-234 dot matrix printer has one of
these electrical interfaces:

RS-232 Serial
20 mA Current Loop

This manual is split into the following main
sections:

• Introduction

• Installation

• Operation

• Maintenance

• Printer Test and Setup

• Communication

Please follow the precautions listed below when
setting up your printer. They are designed to help
you keep your printer working at its best.

* Plug your power supply into an appropriate

grounded outlet.

* Place your printer on a flat hard surface, like

a tabletop.

* Keep your printer out of direct sunlight.

1. Remove the printer cover by pressing on the
groove patterns to pop the front edge up. Lift
off the cover.

2. Press the rocker switch to the left. The light
will go off.

WP-234 Printer User’s Manual8

3. Unroll several inches of the paper.

4. Cut a straight edge on the paper roll if it is
jagged. This will facilitate the entry of the
paper into the printer.

5. Slide the paper through the slot connecting the
paper compartment and the printer compart­ment. You can slide it in about one-quarter
inch before it stops.

6. While holding the paper in place, press the
rocker switch to the Paper Feed position. The
printer will activate, and a rubber roller will pull
the paper into the printer compartment. Hold
the switch in the Paper Feed position until the
paper emerges from the top of the printer
mechanism.

7. When an inch of paper has emerged from the
top of the printer, release the Paper Feed
button

8. Now pull the paper through the printer, until
several inches are exposed.

WP-234 Printer User’s Manual 9

9. Slide the paper through the slot in the printer
cover.

10. Push the back of the printer cover down and
into place.

11. Press the front of the printer cover down to
lock in place.

WP-234 Printer User’s Manual10

To Remove the
Paper Roll

12. Put the paper spindle into the paper roll as
shown below, and place the roll with the
spindle onto the snaps near the back of the
printer. Turn the paper roll to take up any slack
in the paper feeding to the printer. Make sure
the roll of paper turns freely. If it does not turn
freely, the paper will jam and will possibly
damage the printer mechanism.

1. Advance the paper about one inch beyond the
paper cutter by using the Paper Feed switch.

2. Lift the paper roll away from the printer
housing and cut the paper feeding to the
printer with scissors. Try to make the cut as
square as possible to help the next time you
reload the paper.

3. Pull the remaining paper through the printer
mechanism. Be sure to pull the paper from

the top (paper cutter side).

WARNING! Pulling the paper out of the back of the

printer will damage the print mechanism.

WP-234 Printer User’s Manual 11

Connecting and
Powering Up
Your Printer

Maintenance

Operation

1. Attach the appropriate cable between the
printer and your instrument. The connector on
the printer side is “keyed” so that you cannot
plug the cable in the wrong way. This means
that the pins should be positioned so that a
slight pressure will seat the cable properly. Do
not force the pins in. Doing so could damage
the cable.

2. Plug the power cord into the back of the
printer. Plug the transformer into an appropri­ate AC outlet. The unit will power up automati-

cally and print Ready. . .. This means the

printer is ready to print.

The Paper Feed switch on the printer is a rocker
type switch. Push the left side of the rocker switch
to toggle the printer on and offline. Push the right
side of the switch to advance the paper.

Your printer is now ready for printing.

The printer stores characters for printing until one
of two things happens:

1. The line buffer is filled.

2. It receives a line feed (hexadecimal 0A) or a
carriage return (hexadecimal 0D) code.

When (1) or (2) occurs, the printer prints out the
contents of its line buffer. If the buffer is empty
when the carriage return is received, the printer
simply advances the paper one line, leaving a
blank line in the printout.

When printing becomes faint or difficult to see,
replace the ribbon in your printer with an Epson
ERC-09 cartridge ribbon.

EJECT

PUSH

NCI Part Numbers:

Black ribbon: 22332-0029
Purple: 22332-0011
Long-lasting Black: 22332-0045
Wall mount power: 114815534
Paper spindle: 109316536
Paper roll 1.25” dia: 22335-0018
Paper roll 2.75” dia: 22335-0026
Almond paper cutter 23019-0019
Grey paper cutter 23019-0043
Clear plastic paper
roll cover 115513184

For DC modified
units supplied with
cable, connect
positive voltage to
striped wire.

See the DC power
connection illustra­tion below:

WP-234 Printer User’s Manual12

Changing the
Printer Ribbon

If your printer is used infrequently, the print impres­sion may become weak because the ribbon dried
out. To advance the ribbon to a new section, hold
down the Paper Feed switch for several seconds.

Below are the steps for replacing the ribbon:

1. Turn the printer to Standby.

2. Four small grooves are embossed on each
side of the printer cover. Push down on one or
both of these areas until the printer cover tilts.

3. When the printer cover is tilted up, lift it
completely off.

4. Push down on the right side of ribbon car­tridge where it is marked “PUSH”. Remove the
cartridge.

WP-234 Printer User’s Manual 13

Inserting a
Ribbon with
Paper in
the Printer

If you get ribbon ink
on the printer case,
wipe it off immedi­ately. Once it dries it
is difficult to re­move.

5. Install cartridge. Be sure the ink cartridge is
inserted firmly to prevent weak or irregular
printing. The cartridge must be properly seated
and aligned for best printing.

6. Turn the cartridge “knob” (marked by an arrow)
clockwise to stretch the ribbon.

7. Replace the cover.

8. Replace the paper.

You may insert the ribbon cartridge if there is
already paper in the printer.

Hold the cartridge as shown above and slide it over
the paper and into the printer compartment. Be
sure the paper goes between the ribbon cartridge
and the ink ribbon.

WP-234 Printer User’s Manual14

Printer Test

Printer Test and Setup

The printer can be tested and setup using the
steps described in this section. Testing and setup
are done using the rocker switch on the printer.

With the printer unplugged at the outlet or at the
back of the printer, press and hold the right side of
switch as you plug the unit in. The printer will print
out a list of the configuration as it currently exists
then do a continuous print test. To stop the print
test press either side of the rocker switch. Below is
a sample of what is printed when you do the print
test.

WP-234 Printer User’s Manual 15

Accessing the
Setup Menu

This manual
assumes the time
and date option are
installed and
operating. If you do
not have this option
you will not see
references to the
clock or date listed
in most menus.

CONFIGURE. . .

To access the setup menu follow these steps:

1. Unplug the printer either at the outlet or at the
back of the printer.

2. Press and hold down the left side of the rocker
switch and plug in the printer. The printer will
advance the paper. After the paper advance
has stopped, count 3-5 seconds and release
the switch. The following is printed:

If you wait less than three or more than five
seconds Ready. . . is printed and you will have to
try steps 1 and 2 again to access the setup menu.

After you access the setup menu, if you press
NEXT (left side of switch) repeatedly you will see
the following list printed. If you keep pressing
NEXT (left side) the list repeats itself.

As you can see form the above printout the setup
menu contains the following items:

• CONFIGURE menu

• CUSTOM menu

• SET CLOCK menu

• RESET SEQ#

The following pages explain these items and how
to customize the printer to your needs.

The first setup menu item reads

CONFIGURE . . . [NEXT/OK]

[NEXT/OK] is a visual clue so you know that

pressing the left side of the rocker switch will go to
the NEXT part of the menu and that pressing the
right side of the rocker switch will accept (or say
OK to) what this line of the setup menu says.

WP-234 Printer User’s Manual16

With the printer in the setup menu and with
CONFIGURE . . . [NEXT/OK] as the last item
printed, press OK (right side) to access the
configure menu. The following is printed:

LOAD DEFAULTS gives you the opportunity to
reset the printer to all default settings (shown
below).

Choose OK to do this or NEXT to go to the next
parameter. The following is printed:

Baud rate is the next parameter you can set in the
configure menu. The complete list of parameters
and their possible values is shown below.

WP-234 Printer User’s Manual 17

The sample list above shows the current baud rate
is 1200. To accept this, press OK (right side) or
view the next baud rate value by pressing NEXT
(left side). Press OK when the baud rate you want
is displayed.

Choose from these baud rates;

300, 600, 1200, 2400, 4800, 9600, or 19200

DATA BITS is the next parameter. Choose the
data bit value the same way baud rate was
chosen. Choices are 7 or 8 data bits. Parity will
appear next only if you choose 7 data bits.

If you choose 7 data bits you can select EVEN or
ODD parity. If you choose 8 data bits parity defaults
to NONE.

STOP BITS is the next parameter. Choose 1 or 2
stop bits.

HANDSHAKE is the next parameter. Choose from
the following settings:

BUSY-LINE
BUSY-BUFFER
XON/XOFF-LINE
XON/XOFF-BUFFER
NONE

COLUMNS is the next parameter. Select the
number of characters per line (columns) for this
parameter. The choices you have are 24, 32, or 40.
Below are samples of each:

INVERT is the next parameter. Choose YES if you
want inverted text (upside down) or NO if you want
non-inverted text (right side up) in your printouts.
Below is an example of inverted text.

Baud Rate

Data Bits

Stop Bits

Handshake

Handshake is used
for serial interface
only.

Invert

Cols

Parity

WP-234 Printer User’s Manual18

Mag

Font

CUSTOM. . .

FONT is the next parameter. Choose from a 5 x 5,
5 x 7, or 5 x 8 dot matrix print pattern. The 5 x 5 dot
pattern produces only upper case (capital) letters.
The other two fonts can output upper and lower
case letters.

The last parameter is MAGNIFICATION. This
refers to the size of printed type from your printer.
Your choices (with examples) are

NONE

DOUBLE WIDE

DOUBLE HIGH

DOUBLE WIDE/HIGH

After you choose one of the magnifications the
printer will print Ready. . . to show the printer is out
of the configuration menu and the setup menu and
is ready to print.

The next setup menu item after CONFIGURE. . . is

CUSTOM. . .. With the printer in the setup menu

and with CUSTOM. . . as the last item printed, if
you press OK (right side) the printer will print the
following:

If you press OK the printer will print the current
custom setup. A sample is shown below.

WP-234 Printer User’s Manual 19

This manual
assumes the time
and date option is
installed and
operating. If you do
not have this option
you will not see
references to the
clock or date listed
in most menus.

T/D Format

This feature is
available only on
units with the time/
date option in­stalled.

This printout shows you how each item is currently
set. Below is an explanation of each item and the
choices you can make for each.

TIME/DATE FORMAT is the next parameter.
Choose from the following formats.

MM/DD/YY hh:mm ?M
MM/DD/YY hh:mm ?M DOW MM = month
MM/DD/YY hh:mm DD = day
MM/DD/YY hh:mm DOW YY = year
DD-MM-YY hh:mm ?M hh = hour
DD-MM-YY hh:mm ?M DOW mm = minutes
DD-MM-YY hh:mm ?M = AM or PM
DD-MM-YY hh:mm DOW DOW=Day of week
DD/MON/YY hh:mm ?M
DD/MON/YY hh:mm ?M DOW
DD/MON/YY hh:mm
DD/MON/YY hh:mm DOW
NONE

WP-234 Printer User’s Manual20

Auto T&D

Auto Seq#

Pound Sign

_Underscore

➔ ➔

➔ ➔

➔

Zero

Busy Invert

AUTO TIME AND DATE is the next parameter.
Your choices are

YES - autoprint after CR (carriage return)
NO - do not autoprint after CR

Autoprint of the time and date will not occur unless
three seconds has elapsed since the printer has
stopped printing.

AUTO SEQUENCE NUMBER is the next param­eter. Choose

NO - don’t autoprint sequence number after CR
YES - do autoprint sequence number after CR

Autoprint of the sequence number will not occur
unless three seconds has elapsed since the
printer has stopped printing.

ZERO is the next parameter. Choose how you want
the zero character to look in your printouts. Choose
between 0 and 0.

POUND SIGN is the next parameter. Choose to
show pound as # or as the British sterling pound
symbol £.

_UNDERSCORE is the next parameter. Choose
which symbol the same ASCII code will print, an
_underscore or a left arrow.

BUSY INVERT is next.
Choices:

NO - voltage will be in a high state until the unit

is busy then voltage level goes low.

YES - voltage will be in a low state until the unit

is busy then voltage level goes high.

WP-234 Printer User’s Manual 21

The choice to use
the extended
character set is
available only when
8 data bits are
chosen.

Ext Ch Set

Print Ready

Online/Offline

ONLINE/OFFLINE is next.
Choices:

YES - enables the rocker switch to turn the

printer offline.

NO - disables the ONLINE/OFFLINE ability.

EXT CH SET is next. This stands for Extended

Character Set.
Choices:

YES - Allows you to use hexidecimal numbers

above 80 (true only for 8 data bits.)

NO - Disables the Extended Character Set

ability.

PRINT READY is next.
Choices:

YES - Prints Ready. . . upon power up.

NO - Disables printing Ready. . .

WARNING - If you choose NO, hold the left side

of the rocker switch down for 4-6 seconds to
access the setup menu. Begin timing when you
connect power to the unit and the red light
comes on. The paper feed motor does not run
upon power up when Ready. . . is disabled.

WP-234 Printer User’s Manual22

The next item in the Setup Menu is SET CLOCK. . .

With the printer in the setup menu and with SET
CLOCK. . . as the last item printed, if you press OK
(right side) the printer will print the following:

The printout shows the year currently in memory.
The 9 is reversed (white on black) to show the
position of the cursor. This is the number which
will be incremented if NEXT (left side) is pressed.
If the number is correct press OK (right side) and
the following is printed:

The cursor now appears over the 2nd position.
Press NEXT (left side) to increment this number if
needed and OK if it is right. Continue this se­quence of accepting or changing the year, month,
day, and DOW (Day Of Week).

SETCLOCK. . .

This feature is
available only on
units with the time/
date option in­stalled.

WP-234 Printer User’s Manual 23

When you have completed the SET DATE menu
the following is printed automatically:

Choose NEXT (left side) to increment the number
or OK (right side) to accept the 1. Repeat this
same procedure for hours and minutes as shown
below.

When everything is as you want it and you press
OK, START CLOCK is printed. Press OK (right
side) to start the clock. The printer then prints
Ready. . . showing you that it is out of the setup
menu and ready to print.

RESET SEQ# is the last setup menu item. This
menu item lets you reset the sequence number.
This number is the number of print transactions
since the last reset.

With the printer in the setup menu and with RESET
SEQ# as the last item printed, if you press OK
(right side) the sequence number will be reset to
zero and the printer will print Ready. . . showing it
is no longer in the setup menu and that the printer
is ready to print.

To skip resetting the sequence number to zero,
press NEXT (left side). CONFIGURE. . . is printed.
Unplug and replug in the printer to return to
printing mode. Ready. . . is printed.

RESET SEQ#

WP-234 Printer User’s Manual24

RS-232 Serial
Version

Pin No. Signal DTE Direction Description

1 Chassis ground - Cable shield
2 (TD) Transmitted From printer Printer data output line

data
3 (RD) Received data To printer Printer data input line
7 (SG) Signal - Signal ground

10 +12VDC To printer Only w/9-12VDC option
11 (CTS) Clear to send From printer Signal (equivalent to

BUSY) indicating that
printer is ready for
operation and can
receive data.

21 Power return To printer Only w/9-12VDC option

Communication

Serial Interface Voltage Levels

Received data: Mark = OFF = Logic “1” = -25V to -3V

Space = ON = Logic “0” = +25V to +3V

Clear to send: Busy = OFF = Logic “1” = -9V

Not Busy = ON = Logic “0” = +9V

Transmitted data: Mark = OFF = Logic “1” = -9V

Space = ON = Logic “0” = +9V

The rest are not used.

WP-234 Printer User’s Manual 25

20 mA Current
Loop Version

Pin No. Signal Direction Description

1* Chassis ground - Cable shield
23 (RD) Received data(-) From printer printer data return line
25 (RD) Received data(+) To printer printer data input line

*Optional

1. Connectors
On the printer: 25-hole receptacle, equivalent to
DB-25S (Canon)

On the cable: 25-pin plug, equivalent to DB-25P
(Canon) Shell equivalent to DB-C2-J9 (Canon)

WP-234 Printer User’s Manual26

Code

Function Abbreviation Hex Decimal

-NUL000

- SOH 01 1
Reserved STX 02 2
Reserved ETX 03 3

- EOT 04 4

- ENQ 05 5
Reserved ACK 06 6

- BEL 07 7
Back Space BS 08 8

-HT099
Line Feed LF 0A 10

-VT0B11

-FF0C12
Carriage Return CR 0D 13
Double Height SO 0E 14
Double Width SI 0F 15
Reset Seq. # to 0000 DLE 10 16
Inhibit Line Space DC1 11 17
User Character DC3 13 19
Set Time & Date DC4 14 20
Reserved NAK 15 21
Get time and date SYN 16 22

- ETB 17 23
Stop Reverse Field CAN 18 24
Reverse Field EM 19 25
Set Printer Config. SUB 1A 26
Escape ESC 1B 27

-FS1C28
24 Column Mode GS 1D 29
32 Column Mode RS 1E 30
40 Column Mode US 1F 31

Control Codes

The printer will ignore all other control codes.

According to the American Standard Code of
Information Interchange (ASCII), there are 32
control codes in addition to the codes for the
printable characters. (Control codes are sent as
data, but the receiving device interprets them as
abbreviated ‘’instructions”, communication - status
messages, etc.)

The printer recognizes these control codes:

WP-234 Printer User’s Manual 27

Back Space

Code 8

Line Feed

Code 10

Carriage Return

Code 13

Double Height

Code 14

Double Width

Code 15

Upon receipt of this code, the printer erases from
its buffer the previously received character. This is
useful in correcting typing errors for programs that
send data both to a video screen and the hardcopy
printer. Remember that if you type more characters
than the printer can print on a line, the printer will
automatically start printing.

The printer handles this control code in exactly the
same manner as carriage return (control code 13)
except when a line feed immediately follows a
carriage return. The line feed code is ignored if it is
immediately preceded by a carriage return. The
default setting is 7.4 lines per inch.

Whenever a carriage return code is received, the
printer will print out the current contents of its
buffer, then clear the buffer to get ready for addi­tional data.

This control code tells the printer to switch to the
double height character line. The control code can
be sent at any time on a line, it need not be the first
code received by the printer after a carriage return.
You cannot mix normal and double height charac­ters on the same line. Once you select the double
height, the printer will remain in that mode until it
receives a carriage return or line feed. A line print
caused by a buffer full condition will not clear the
double height command. This means that the
“wrap around” print line will also be double height
if the double height command was sent before the
line buffer was filled.

This control code tells the printer to switch to
double width character printing. The control code
should be sent as the first character on a line. If it
is received after half the maximum characters per
line were sent then the printer will ignore all
characters on the last half of the line.
You cannot mix normal and double width charac­ters on the same line. Once you select the double
width, the printer will remain in that mode until it
receives a carriage return or line feed. A line print
caused by a buffer full condition will not clear the
double width command. This means that the “wrap
around” print line will also be double width if the
double width command was sent before the line
buffer was filled.

WP-234 Printer User’s Manual28

Enlarged Printing

Codes 14 and 15

Reset Sequence

Number

Code 16

Inhibit Line Spac-

ing

Enlarged printing may be selected by sending both
the double height command (code 14) and the
double width command (control 15). The control
codes may be sent in either order, but because of
the double width restrictions, the codes should be
sent at the beginning of a line.

Example of Control Codes 14 and 15:

When the printer receives this control code it will
immediately reset the sequence number to 00000.

A standard character line is made up of ten dot
lines. Eight of these dot lines are used for the
printable character and two are used for space
between lines. When using character graphics it is
desirable to eliminate the two blank lines so the
graphic characters connect together. Sending a
CHR$(17) which is control code 17 anywhere on a
line of data will stop the printer from putting space
between that line and the next. If a CHR$(17) is not
on a print line, the normal space between lines will
be printed.

Example:

Run:

WP-234 Printer User’s Manual 29

User Programmable

Character

Code 19

By using CHR$(1) you enter the Custom Character
mode. This allows you to design and print your
own 6 x 8 character by inputting data. A DATA
statement is made of numbers that represent a
row of dots which when READ all together, will
make up your character. To design your character,
follow the example below. You should notice that
each number in the DATA statement corresponds
to one row in your character. To design a charac­ter, follow these steps:

1. Use quad ruled paper to design your charac­ter.

2. Number 8 consecutive rows like this:

1
2
4
8
16
32
64
128

3. Now design your character in dot form (see
the example below).

4. Add together all the numbers from the column
on the left, counting only where you have
placed a dot in a row. In our example, the first
column has three dots located in rows 4, 8,
and 16. Added together they equal 28.

5. Put your final total for each column into a data
statement in column order.

WP-234 Printer User’s Manual30

The DATA statement in your program will read:

DATA 28, 34, 65, 65, 54, 34

The next step is to tell the printer your newly
designed character. To do this you must send a
CHR$(19) followed by the six numbers you
computed above. Here is an example of how this
can be done.

After typing RUN, your custom character will be
stored in the printer’s memory. It will retain this
information until the printer is switched off or until
you write over the data by defining a different
character.

To print your newly designed character, simply
send CHR$(126) which corresponds to
hexidecimal value 7E.

WP-234 Printer User’s Manual 31

This control code is used when setting the
printer’s time and date clock.

This control code is used to read the printer’s time
and date clock.

Sending this control code will turn OFF the reverse
field mode that is selected using control code 25.

Send this control code to turn ON the reverse field
printing mode. This will print white letters on a dark
background. Do not print more that three reverse
field print lines. Also, do not print more than a few
empty spaces in a reverse field. The printer may
become overloaded and stop printing.

This control code is used when setting the
printer’s various configuration parameters.

The printer powers up in the column mode last
selected by configuration. You can change the
column width by sending the appropriate control
code from the list below:

Control code 29 - 24 columns
Control code 30 - 32 columns
Control code 31 - 40 columns

You can send the control code at any point on a
line before the buffer becomes filled. You cannot
change column widths on the same line.

Selectable Column

Width

Codes 29, 30, 31

Set Time and Date

Control Code 20

Read Time

and Date

Control Code 22

Cancel Reverse

Field

Control Code 24

Reverse Field

Control Code 25

Set Printer Config.

Code 26

WP-234 Printer User’s Manual32

Printable

Characters

The WP-234 printer can produce all ASCII charac­ters from hex 20 through hex 7D (decimal 32
through 125). Here’s what they look like:

Note the last two codes of the usual ASCII charac­ter set are not supported. Instead, if CHR$(126),
which corresponds to hexadecimal 7E, is received
by the printer, it will print the character defined in its
RAM (Random Access Memory). The section on
USER Programmable Character describes how
this RAM can be loaded with any 6 x 8 pattern.

The WP-234 also has a graphic character set that
resides between hexidecimal values 80 and FF
(decimal 128 and 255). The symbols used are
compatible with Radio Shack’s Model 100 portable
computer.

For solid graphics applications please contact
your Weigh-Tronix supplier.

WP-234 Printer User’s Manual 33

Command Print formatted data

<ESC> 0 HH:MM 24 hour format
<ESC> 1 HH:MM_?M 12 hour format with

AM

or PM
<ESC> 2 MM/DD/YY month/day/year
<ESC> 3 DD-MM-YY day-month-year/

numeric month
<ESC> 4 DD-MON-YY day-month-year with 3

letter abbreviation of

the month
<ESC> 5 DOW day of week abbrevia-

tion
<ESC> 6 currently configured format
<ESC> 9 XXXX current sequence

number

Printer Escape

Command Code

Definitions

Notes

Avery Weigh-Tronix Canada, ULC

217 Brunswick Boulevard
Pointe Claire, QC H9R 4R7 Canada
Telephone: [phone]
Toll free: 800-561-9461
Facsimile: 514-695-6820
www.weigh-tronix.ca

Avery Weigh-Tronix

1000 Armstrong Dr.
Fairmont, MN 56031 USA
Telephone: [phone]
Facsimile: 507-238-4195
e-mail: [e-mail]
www.wtxweb.com