Custom Audio Electronics PT 285 User manual

PT 285

THERMAL PRINTER

PT 285

User’s Manual

www.custom.it

PT 285

whatsoever, whether it be on paper or through computer processes, is strictly prohibited.

Custom Engineering s.r.l. and the resource teams employed in the making of this manual

will not be held responsible for any problems arising as a result of improper use of this

manual, as they guarantee that the information contained in it has been subjected to

careful inspection.

Any suggestions regarding errors in its contents or possible improvements will,

nonetheless, be greatly appreciated. The products are continuously checked and

improved. For this reason Custom Engineering s.r.l. reserves the right to modify the

information contained in this manual without prior notice.

COD. DOME-PT285 Revision 1.10

Custom Engineering

Str. Berettine 2 - 43010 Fontevivo (PARMA) - Italy

Tel. : +39 0521-680111 - Fax : +39 0521-610701

http: www.custom.it Email : [email protected]

PT 285

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PT 285

GENERAL INFORMATION REGARDING SAFETY

•Read and keep the following instructions.

•Observe all warnings and follow all instructions attached to the printer.

•Before cleaning the printer, disconnect the feed cable.

•Clean the printer with a damp cloth. Do not use liquid or spray products.

•Do not operate the printer near to water.

•Do not place the printer on unsteady surfaces. It could fall and get seriously damaged.

•Usethetypeofelectricitysupplymarkedontheprinterlabel.Intheeventofuncertainty,

contact the seller.

•Position the printer in such a way as to ensure that the cables connected to it will not

be damaged.

•Ensure that the maximum absorbed current of the printer does not exceed the

maximum acceptable current for the type of feed cable used.

•Do not put objects of any kind inside the printer as they could cause a short circuit or

damage parts which could affect its performance.

•Do not spill liquids on the printer.

•Donotcarry out technical operationsonthe printer with theexceptionof the scheduled

maintenance operations specifically indicated in the user’s manual.

•Disconnect the printer from the electricity supply and have it repaired by a specialized

technician should any of the following conditions occur:

A. The feed connector has been damaged.

B. Liquid has penetrated to the inside of the printer;

C. The printer has been exposed to rain or water;

D. The printer is not operating normally despite the instructions in the user’s

manual having been followed.

E. The printer has been dropped and its case damaged.

F. The performance of the printer is poor.

G. The printer does not work.

PT 285

GENERAL FEATURES

The PT285 (Fig.1) is a panel printer which is undoubtedly the best solution for all industrial applications:

itisidealforPOS,weighingsystems,receipts(notfortaxpurposes),security,controllinganddiagnostics

purposes.

IT IS equipped with a high resolution, rapid-type thermal print mechanism (200dpi), which uses 57.5mm

wide rolls of thermal paper.

The PT285 printer is so compact and lightweight that it can be installed extremely easily on any type of

equipment. It is able to satisfy every requirement, thanks to its personalized programming facility. It has

a 4K print buffer. It is supplied with RS232 serial and CENTRONICS parallel interfaces as standard. It

can also be equipped with a Real Time Clock.

The PT285 has 3 pages of programmable graphics in which logos and drawings can be stored.

The driver for Microsoft® Windows™ and software for editing and programming logos and fonts, and

for upgrading the printer’s firmware, are available on request.

DESCRIPTION

PT 285

PRODUCT DESCRIPTION

The PT285 printer has an ABS casing with a cover which opens to allow access to the paper roll and

print head. The printer’s dimensions are shown in fig. 2.

The keyboard, consisting of the PRINT and FEED keys with illuminated LEDs, is housed in the front of

the printer.

Figure 2

• PRINT key. When the print key is activated it brings about the transmission in serial of the control

character “$0D”. This only happens, however, if it has been enabled through DATA4 with logic “0” or,

alternatively,ifswitch5ofoptionRS232isin the ON position.Ifduringconfigurationfromthekeyboard,

the option to set using the keys has been selected, transmission of the character “$0D” can either be

enabled or disabled. When the PRINT key’s LED lights up, this indicates that the printer is printing.

• FEED key. When this is pressed the paper feeds forward manually. If this key is pressed briefly, when

the RTCK option is installed, the date and time of day is printed. When the LED of the FEED key

lights up , this indicates that the logic card’s power supply is correct, i.e. that it is over 3.7 V (minimum

threshold, under which the printer is reset and the LED stays off). If there is no paper, the LED

flashes.

DESCRIPTION

PT 285

DESCRIPTION

TECHNICAL SPECIFICATIONS

Table1liststhe main features of the two printer models: PT285 16, 24 and40columns.

TABLE 1

COLUMNS 16 24 40

Characters (L x H mm) 3x4 2x3 1,1x2

Character matrix 24x32 16x24 9x16

Graphic dot 8dot/mm

Dots per line 384

Printing speed: 2,6

Lines/sec. 6,5 9 13

Characters/sec. 100 216 520

Printing method Fixedthermal head

Writing method Straight,reverse,90°

Print formats Normal,doubleandquadrupleheightandwidth, enlarged,

negative,underscored

Character set 5built-in fonts

Paper width 57,5.0,5mm x Ø50 mm max

Print buffer 4Kbytes

Standard interfaces TTLserialand parallel

Optional interfaces CurrentloopRS232 serial, RS485 and

Centronicsparallel

Power supply 5 Vdc ± 10%

Absorption

Mediumwhen printing 14 W

Environmental conditions

Operatingtemperature 0°C - +50°C

Operatinghumidity 35% - 85%

Storagetemperature /humidity -20°C - +65°C / 10%-90%

Options Real time Clock, power pack

PT 285

HOW TO REMOVE THE PRINTER FROM ITS PACKAGING

Open the packaging and check :

a) that none of the parts have been damaged during transportation ;

b) that the paper roll is in place.

c) that the printer is equipped with two screws and two brass washers, for installation purposes.

Figure 3

INSTALLATION PROCEDURE

On the panel on which the printer is to be mounted, make a square hole of dimensions

112 X 112 mm (see fig. 3). Unscrew the two brass washers +A+, while leaving the screws “B” in place.

Insert the printer into the hole on the panel, open the front cover and, working from the back, manually

screw down the two brass washers until the printer is firmly in place.

Plug in the interfacing and feed connectors located on the logic card..

If possible, do not expose the equipment to direct light sources.

INSTALLATION and USE

PT 285

Card and Motor

Control Connector

Power Supply

Connector

Print Key

GND

Led Print

( +VCC )

CONNECTIONS

Power supply

The PT285 printer is equipped with a standard 4-pin male AMPMODU1-type connector (J1).

The signals on the power supply connector pins are as follows :

1GND

2GND

3+VT :5 Vdc ±15% (print head power supply)

4+VDC : 5 Vdc± 7% (logic card power supply)

In the following figure (serigraph of card connectors) the connections to be made on the pins of power

supply connector J1 are shown:

It is advisable to install a common mode ferrite with an impedance of approx.200 W to 100 MHz on the

feeding line, for the express purpose of improving immunity to disturbance on the line.

Connection with the power supply connector (J1) can be avoided by using the logic circuitry’s flat 20-pin

connector (J4), thus connecting the printer’s power supply and signals with a single cable. The flat

cable must not exceed 20 cm in length for the 20-pin connector because, when electrical current run

inside small diameter wires, voltage failures can occur, thus interfering with the correct operation of the

printer.Additionally,withthistype of connection,conformityto the electromagneticcompatibilitystandards

can no longer be guaranteed.

If the RS232 or CENTRONICS options are installed in the printer, it must, of necessity, be supplied

through the connector J1.

For the pin pattern relative to feeding through the logic’s flat connector, please refer to the following

paragraph :

INSTALLATION and USE

PT 285

Logic

In the 20-pin connector J4, the signals are arranged as follows :

1+VT 2+VT

3+VDC 4+VDC

5GND 6GND

7TD 8D6

9D5 10 D4

11 D3 12 D2

13 D1 14 D0

15 D7 * 16 RESET

17 PSE 18 READY/RTS

19 FEED 20 STB/RD

*The D7 signal is not taken into consideration in the event of 7-bit programming of the parallel port.

In order to configure the PT285 with the extended character set, the parallel interface must be 8-bit

programmed.

The signals indicated have the following functions :

GND : signal ground and feed ;

+VT : print head feed ;

+VCC logic card feed ;

PSE (input) : serial/parallel interface selection. If shortcircuited to ground (0) serial communication is

enabled ; if free (1) parallel communication is enabled ;

D0,...,D7 (inputs) :data buses. In the parallel configuration, these correspond to the printer input data

bus (the high level indicates binary digit 1). In serial communication these are used to determine the

communication speed and transmission protocol: normally the data bus is on logic level 1: in order to

obtain logic level 0, shortcircuit to ground (GND).

The serial baud rate is settable as shown in the table below :

D0 D1 D2 BAUD

0 0 1 300

1 0 1 600

1 1 1 1200

0 1 1 2400

0 0 0 4800

1 0 0 9600

1 1 0 19200

All other combinations select the speed at 1200 baud.

INSTALLATION and USE

Table of contents

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