SEWOO WTP-100 Technical Manual

WTP-100

Thermal Receipt printer

Technical manual

TECHNICAL MANUAL

SEWOO TECH CO., LTD.

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1. General Specifications

1.1 Printing Specifications

1.2 Character Specifications

1.3 Auto Cutter

1.4 Paper Roll Supply Device

1.5 Paper Specifications

1.6 Printable Area

1.7 Printing and Cutting Positions

1.8 Internal Buffer

1.9 Electrical Characteristics

1.10 EMI and Safety Standards Applied

1.11 Reliability

1.12 Environmental Conditions

2. Configuration

TABLE OF CONTENTS

2.1 Interface

2.1.1 RS-232 serial interface

2.1.2 Specifications

2.1.3 Switching between on-line and off-line

2.1.4 Interface connector terminal assignments and signal functions

2.1.5 Serial interface connection example

2.1.6 Centronics parallel interface

2.1.7 Interface Connector

2.1.8 Parallel Interface

2.1.9 Data Receiving Timing(Compatibility Mode)

3. Connectors

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3.1 Interface Connectors

3.2 Electrical Characteristics

3.3 Drawer kick-out Connector (Modular Connector)

◈ Control Command Summary

1. General Specifications

1.1 Printing Specifications

1) Printing method: Thermal line printing

2) Dot density: 203dpi × 180dpi. The number of dots per

3) Printing direction: Unidirectional with friction feed

4) Printing width: 72mm(2.83"), 576 dot positions

5) Characters per line(default): Font A: 46
Font B: 61

6) Printed dot dimension: 0.11mm °0.13mm

7) Printing speed: High speed mode:

30.7lines/second maximum
(1/6inch feed) (at 24V, 20℃)
Approximately 130mm/sec maximum
(approximately 5.11inchs/sec maximum)
NOTE: Speeds are switched depending on the applied voltage to the printer and
head temperature conditions automatically.
NOTE: There may be variations in printing after switching the mode of the
printing speed. To prevent this for logo printing with ESC* command, using a
downloaded bit image is recommended. Change in printing speed does not
occur during down loaded bit image printing.

8) Paper feed speed: Approximately 150mm/second

9) Line spacing (default): 1/6 inch (4.23mm)
Programmable by control command.

25.4mm(1")

(approximately 5.9 inches/second)
(continuous paper feeding)

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1.2 Character Specifications

1) Number of characters: Alphanumeric characters: 95

Extended graphics 128 × 7 pages

(including one space page)

International characters: 32

① English
② Hangul
③ Chinese (GB2312)

2) Character structure: Font A: 12 ⅹ 24
Font B: 9 ⅹ 24
Hangul,GB: 24 ⅹ 24
Font A is selected as the default

3) Character size:

Standard Double-height Double-width

W ⅹ
H(mm)

FontA 12ⅹ24

FontB 9ⅹ24

Hangul, GB
24ⅹ24

Space between characters is not included.
CPL = Characters per line

1.25ⅹ

3.39

0.875ⅹ

3.39

3ⅹ 3.39 23 3ⅹ6.77 23 6ⅹ3.39 11 6ⅹ6.77 11

CPL

46

61

W ⅹ
H(mm)

1.25ⅹ

6.77

0.875ⅹ

6.77

CPL

42

61

W ⅹ
H(mm)

2.5ⅹ

3.39

1.75ⅹ

3.39

CPL

23

30

Double-width /

Double-height

W ⅹ
H(mm)

2.5ⅹ

6.77

1.75ⅹ

6.77

CPL

23

30

1.3 Auto Cutter

Partial cut: Cutting with one point center uncut

NOTE: To prevent dot displacement, after cutting, paper must be fed

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approximately 1mm(14/360 inches) or more before printing.

1.4 Paper Roll Supply Device

1) Supply method: Drop-in paper roll

2) Near-end sensor:
a) Detection method: Microswitch
b) Paper roll spool diameter: Inside: 12mm(.47″ )
Outside: 18mm(.71″)
c) Near-end adjustment: Adjusting screw

d) Remaining amount: Fixed position #1 (approximately

23mm(0.9″ )) #2 (approximately

27mm(1.06″ ))
NOTE: You can use a command to stop printing upon detection of a
paper near-end.

1.5 Paper Specification

1) Paper type: Specified thermal paper

2) Form: Paper roll

3) Paper width: 79.5 ± 0.5mm(3.13"±0.02")

4) Paper roll size: Roll diameter: Maximum 83mm
Take-up paper roll width: 80 ± 0.5, 1.0mm(3.15"±

0.020", 0.04")

5) Paper roll spool diameter: Inside: 12mm(.47")

Outside: 18mm(.71")
NOTE: Paper must not be pasted to the paper roll spool.

1.6 Printable Area

1) Paper roll

The printable area of a paper with width of 79.5± 0.5mm(3.13"±0.02") is

72.2 ± 0.2mm(2.84"±0.008")(576dots) and the space on the right and left
sides are approximately 3.7 ± 2mm(0.15"±0.079").
a=79.5±0.5mm(3.13"±0.02")
a b=0.125mm±0.05mm(.056"±.002")

c=69mm±0.2mm(2.84±.008")
b d=3.7±0.2mm(0.15"±0.079")

□□ □ ……………□□ e=3.7±0.2mm(0.15"±0.079")

c [All the numeric values are typical.]

d e

< Figure 1.1 Paper Roll Printable Area >

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1.7 Printing and Cutting Positions

Manual-cutter position

Auto-cutter blade position

Center of the print dotline

< Figure 1.2 Printing and Cutting Positions >

NOTE: Numeric values used here are typical values; the values may vary slightly
as a result of paper slack or variations in the paper. Take the notice into account
when setting the cutting position of the auto-cutter.

1.8 Internal Buffer

1) Receive buffer: 8kbyte

1.9 Electrical Characteristics

1) Supply voltage: +24 VDC ± 7%

2) Current consumption (at 24V):
Operating: Approx. 1.5A(at ASCII Printing)
Peak: Approx. 10A(at print duty 100%, For 10

seconds or less)

Stand-by: Approx. 0.15A

1.10 EMI and Safety Standards Applied

1) Europe: EMI – EN55022 CLASS A

EMS – EN61000-3-2

EN61000-3-3
EN50082-1

Safety Standard: EN60950

2) North America: EMI - FCC Part#15 Class A
Safety Standards- UL(1950), c-UL(No.950)

1.11 Reliability

1) MCBF: 60 million lines

(based on an average printing rate of 12.5% with paper

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thickness in the range 65 ㎛ to 75 ㎛).

25 million lines

(based on an average printing rate of 12.5% with paper
thickness in the range 76 ㎛ to 150 ㎛)

2) Cutter Life: 3.0 million cuttings

(if the paper thickness is between 65 and 100 ㎛)

1.12 Environmental Conditions

1) Temperature: Operating: 5° to 45°C (41° to 113°F)
Storage: -10° to 50°C (14° to 122°F)

(except for paper)

2) Humidity: Operating: 10 to 90%RH

Storage: 10 to 90%RH (except for paper)

[RH]
90
80

60
Relative humidity
40
range
20
10

0 0 10 20 30 40 50

< Figure 1.3 Operating Temperature and Humidity Range >

Operating environment

Ambient temperature [°C]

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2. Configuration

2.1 Interface

2.1.1 RS-232 serial interface

2.1.2 Specifications

Data transmission: Serial
Synchronization: Asynchronous
Handshaking: DTR/DSR or XON/XOFF control
Signal levels: MARK= -3 to – 15V: Logic “ 1”

SPACE= +3 to +15V: Logic “ 0”
Baud rage: 4800, 9600, 19200, 38400 bps
Data word length: 7 or 8 bits
Parity Settings: None, even, odd
Stop bits: 1 or more
Connector (printer side): Female DSUB-25 pin connector

NOTE: The data word length, baud rate, and parity depend on the

DIPswitch settings.

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2.1.3 Switching between on-line and off-line

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The printer does not have an on-line/off-line switch.
The printer goes off-line:

• Between when the power is turned on (including reset using the
interface) and when the printer is ready to receive data.

• During the self-test.

•When the cover is open.

• During paper feeding using the paper feed button.

• When the printer stops printing due to a paper-end (in cases when
an empty paper supply is detected by either paper roll end detector
or the paper roll near-end detector with a printing halt feature by
ESC c4).

• During macro executing stand by status.

• When a temporary abnormality occurs in the power supply voltage.

• When an error has occurred.

2.1.4 Interface connector terminal assignments and signal functions

PIN SIGNAL I/O DESCRIPTION

2 TXD - Printer transmit data line RS-232C level
3 RXD - Printer receive data line RS-232C level

4, 20 DTR Output Printer handshake to host line RS-232C level

6 DSR Input Data Send Ready

1,7 GND - System Ground

2.1.5 Serial interface connection example

Host side Printer side

TXD ………………………………… RXD
DSR ………………………………… DTR

RXD ………………………………… TXD
DTR ………………………………… DSR
FG ………………………………… FG
SG ………………………………… SG

NOTES: ◦ Set the handshaking so that the transmit data can be

received.
◦ Transmit data to the printer after turning on the power and
initializing the printer.

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N

1 Bit

< Figure 2.2 Line transmission with protocol >

2.1.6 Centronics parallel interface

7 or 8
Bit

< Figure 2.1 Serial transmission bit frame >

one or

1 Bit

1 or 2
Bit

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PIN SIGNAL I/O DESCRIPTION

1 STROBE- Input Synchronize signal Data received

2-9 DATA0-7 Input Data bit Transmitted 0-7

10 ACK- Output Data receiving competed
11 BUSY Output Impossible to printer data receiving
12 PE Output Paper empty
13 SELECT Output Printer’ s status for ON/OFF line
14 AUTO FEED- Input ND
15 NC -
16 GROUND - System Ground
17 CHASSIS GND - System Ground
18 LOGIC-H - +5V

19-30 GROUND - System Ground

31 INIT- Input Initialize
32 ERROR- Output Printer Error
33 GROUND - System Ground
34 NC -
35 +5V - +5V
36 SELECT IN- Input ND

Parallel Port>

2.1.7 Interface Connector

<D-SUB 25 Female Serial Port> <D-SUB Centronics

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2.1.8 Parallel Interface

1) Specifications
Data transmission: 8-bit parallel
Synchronization: STROBE pulse supplied by host computer.
Handshaking: ACK and BUSY
Connector: D-SUB 25(male) or equivalent

DATA Data n Data n+1

THold-1

nStrobe

tSetup tSTB tHold-2

Busy Peripheral Busy

tReady tBUSY

nAck
tReply tACK tnBUSY

tNext

2.1.9 Data Receiving Timing (Compatibility Mode)

Characteristics Symbol

Data Hold Time (host) tHold-1 -- 500
Data Hold Time (printer) tHold-2 -- -­Data Setup Time tSetup -- 500
STROBE Pulse Width tSTB -- 500
READY Cycle Idle Time tReady -- -­BUSY Output Delay Time tBUSY 0 500
Data Processing Time tReply 0 ∞
ACKNLG Pulse Width tACK 500 10 ㎲
BUSY Release Time tnBUSY 0 ∞
ACK Cycle Idle Time tNEXT -- 0

*The printer latches data at a nStrobe ↓ timing

Specifications

Min [ns] Max [ns]

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3. Connectors

3.1 Interface Connectors
Refer to Section 2.1, Interface

3.2 Electrical Characteristics

1) Input Voltage: DC 24V ± 10%

2) Current Consumption: Operating: Approx. 1.5 A (at ASC∥ printing)
Peak: Approx. 10 A (at print duty 100%, For 10 seconds or

less)

Stand-by: Approx. 0.15 A

3) Power Connector

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3.3 Drawer Kick-out Connector (Modular Connector)

The pulse specified by ESC p or DLE DC4 is output to this connector.
The host can confirm the status of the input signal by using the
DLE EOT, GS a, or GS r commands.

1) Pin assignments: Refer to Table 2.2.2

2) Connector model:

Printer side: DAEEUN DEK-623PCB-6-B or Equivalent

User side: 6-position 6-contact (RJ12telephone jack)

< Drawer Kick-out Connector Pin Assignments >

Pin Number Signal Name Direction

1 Frame GND ­2 Drawer kick-out drive signal 1 Output
3 Drawer open/close signal Input
4 +24V ­5 Drawer kick-out drive signal 2 Output
6 Signal GND -

+24V is output through pin 4 when the power is turned on. However, pin 4 must
by used only for the drawer.

< Figure 3.1 Drawer Kick-out Connector >

3) Drawer kick-out drive signal
Output signal: Output voltage: Approximately 24V
Output current: 1A or less

CAUTION: To avoid an overcurrent, the resistance of the drawer kick-out
solenoid must be 24 Ω or more.

Output waveform: Outputs the waveforms in Figure 3.2 to the points A and B

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in Figure 3.3

t

1 (ON time) and t2 (OFF time) are specified by ESC p or

DLE DC4.

t1

< Figure 3.2 Drawer Kick-out Drive Signal Output Waveform >

4) Drawer open/close signal
Input signal level (connector pin 3): “L”= 0 to 0.8V
“H”= 3 to 5V

x 2ms : t2 x 2ms

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< Figure 3.3 Drawer Circuitry >

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NOTE: 1. Use a shielded cable for the drawer connector cable.

2. Two driver transistors cannot be energized simultaneously.

3. The drawer drive duty must by as shown below.

ON time

≤ 0.2

(ON time + OFF time)

4. Be sure to use the printer power supply (connector pin 4) for the drawer
power source.

5. The resistance of the drawer kick-out solenoid must not be less than the
specified. Otherwise, an overcurrent could damage the solenoid.

6. Do not connect telecommunication network to the drawer kick-out
connector.

Control command summary

No. Command Function

1 HT Horizontal tab
2 LF Print and line feed
3 CR Print and carriage return
4 FF Print end position label to start printing
5 CAN Cancel print data in page mode
6 DLE EOT Real-time status transmission
7 DLE ENQ Real-time request to printer
8 DLE DC4 Generate pulse at real-time

9 ESC FF Print data in page mode
10 ESC SP Set character right-side spacing
11 ESC ! Set print mode
12 ESC $ Select/cancel user-defined character set
13 ESC % Define user-defined characters
14 ESC & Turn underline mode on/off
15 ESC * Set bit image mode
16 ESC - Turn underline mode on/off
17 ESC 2 Set 1/6 inch line spacing
18 ESC 3 Set line spacing using minimum units
19 ESC = Select peripheral device
20 ESC ? Cancel user-defined characters
21 ESC @ Initialize printer
22 ESC D Set horizontal tab positions
23 ESC E Select emphasized mode
24 ESC G Select double-strike mode
25 ESC J Print end feed paper using minimum units
26 ESC L Select page mode

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27 ESC M Select character font
28 ESC R Select international character set
29 ESC S Select standard mode
30 ESC T Select print direction in page mode
31 ESC V Set/cancel 90° cw rotated character
32 ESC W Set printing area in page mode
33 ESC ₩ Set relative position
34 ESC a Align position
35 ESC c 3 Select paper sensor(s) to output paper-end signals
36 ESC c 4 Select paper sensor(s) to stop printing
37 ESC c 5 Enable/disable panel buttons
38 ESC d Print and feed paper n lines
39 ESC p General pulse
40 ESC t Select character code table
41 ESC { Set/cancel upside-down character printing
42 GS ! Select character size
43 GS $ Set absolute vertical print position in page mode
44 GS * Define downloaded bit image
45 GS / Print down-loaded bit image
46 GS : Start/end macro definition
47 GS B Turn white/black reverse printing mode on/off
48 GS H Select printing position of HRI characters
49 GS I Transmit printer ID
50 GS L Set left margin
51 GS P Set horizontal and vertical motion units
52 GS V Cut paper
53 GS W Set printing area width
54 GS ₩ Set relative vertical print position in page mode
55 GS ^ Execute macro
56 GS a Enable/disable Automatic Status Back(ASB)
57 GS b Turn smooting mode on/off
58 GS f Select font for HRI characters
59 GS h Set bar code height
60 GS k Print bar code
61 GS r Transmit status
62 GS v 0 Print raster bit image
63 GS w Set bar code width

< Add >
1 ESC I Full cut
2 ESC m Partial cut

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‘ Command Descriptions

Command Notation

[Name]

[Format]

[Range]

[Description]

[Notes]

[Default]

[Reference]

[Example]

The name of the control command.

The code sequence.
In this description, < > H denotes hexadecimal numbers, < >denotes
decimal numbers and < > B denotes binary numbers.
[ ] k indicates the contents of the [ ] should be repeated k times.

The allowable range for the arguments.

Description of the command function.

If necessary provides important information on setting and using the
printer command.

The default values for the commands.

List related commands.

Example of using the commands.

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The numbers denoted by <>H is hexadecimal.
The numbers denoted by <>B is binary.

Print Commands

The ADP series supports the following commands for printing characters and advancing
paper.

HT

[Name] Horizontal tab

[Format] ASCII HT
Hex 09
Decimal 9

[Description] Moves the print position to the next tab position.
This command is ignored unless the next tab position has been set.

[Notes] Horizontal tab positions are set using “ ESC D” .

If this command is received when the printing position is at [printing
area width +1], the printer executes print buffer-full printing of the
current line and horizontal tab processing from the beginning of the next
line.

[Reference] ESC D

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LF

[Name] Print and line feed

[Format] ASCII LF
Hex 0A
Decimal 10

[Description] LF prints the data in the print buffer and feeds one line.

The amount of paper fed per line is based on the value set using the line
spacing command.
The default setting is 1/6 inch.

[Reference] ESC 2, ESC 3

CR

[Name] Print and line feed

[Format] ASCII CR
Hex 0D
Decimal 13

[Description] When auto line feed is enabled, this command functions in the same

way as LF.

When auto line feed is disabled, this command is ignored.

[Reference] This command sets the print position to the beginning of the line.

This command is available only with a parallel interface and is ignored
with a serial interface.

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FF

[Name] Print and return to standard mode (in page mode).

[Format] ASCII FF
Hex 0C
Decimal 12

[Description] FF prints the data in the print buffer and returns to standard mode.

[Notes] The printing area set by ESC W is reset to the default setting.
This command is effective only when page mode is selected.

All data are cleared after printing.

This command sets the print position to the beginning of the line.

[Reference] FF, ESC L, ESC S

CAN

[Name] Cancel print data in page mode

[Format] ASCII CAN
Hex 18
Decimal 24

[Description] In page mode, delete all the print data in the current printable area.

[Notes] This command is enabled only in page mode.

If data that existed in the previously specified printable area also exists
in the currently specified printable area, it is deleted.

DLE EOT n

[Name] Real-time status transmission.

[Format] ASCII DLE EOT n
Hex 10 04 n
Decimal 16 4 n

[Range] 1≤n≤4

[Description] Transmits the selected printer status specified by n in real-time,

according to the following parameters:

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n=1 : Transmit printer status
n=2 : Transmit off-line status
n=3 : Transmit error status
n=4 : Transmit paper roll sensor status

[Notes] The status is transmitted whenever the data sequence of

<10>H<04>H<n> (1 ≤ n ≤ 4) is received.
Example:
In ESC * m nL nH d1...dk, d1=<10>H, d2=<04>H, d3=<01>H
This command should not be used within the data sequence of another
command that consists of 2 or more bytes.
Example:
If you attempt to transmit ESC 3 n to the printer, but DTR (DSR for the
host computer) goes to MARK before n is transmitted and then DLE EOT
3 interrupts before n is received, the code <10>H for DLE EOT 3 is
processed as the code for ESC 3 <10>H.
Even though the printer is not selected using ESC = (select peripheral
device), this command is effective.
The printer transmits the current status. Each status is represented by
one-byte data.
The printer transmits the status without confirming whether the host
computer can receive data.
The printer executes this command upon receiving it.
This command is executed even when the printer is off-line, the receive
buffer is full, or there is an error status with a serial interface model.
With a parallel interface model, this command can not be executed
when the printer is busy. This command is executed even when the
printer is off-line or there is an error status when DIP switch 2-1 is on
with a parallel interface model.
When Auto Status Back (ASB) is enabled using the GS a command, the
status transmitted by the DLE EOT command and the ASB status must
be differentiated.

n = 1: Printer status

Bit Off/On Hex Decimal Function
0 Off 00 0 Not used. Fixed to Off
1 On 02 2 Not used. Fixed to On

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Off 00 0 Drawer open/close signal is LOW (connector pin 3). 2
On 04 4 Drawer open/close signal is HIGH (connector pin 3).
Off 00 0 On-line 3

On 08 8 Off-line.
4 On 10 16 16 Not used. Fixed to On
5,6 - - - Undefined.
7 Off 00 0 Not used. Fixed to Off.

n = 2: Off-line status

Bit Off/On Hex Decimal Function
0 Off 00 0 Not used. Fixed to Off
1 On 02 2 Not used. Fixed to On

Off 00 0 Cover is closed 2
On 04 4 Cover is open
Off 00 0 Paper is not being fed by using the FEED button 3
On 08 8 Paper is being fed by the FEED button

4 On 10 16 Not used. Fixed to On

Off 00 0 No paper-end stop 5
On 20 32 Printing is being stopped
Off 00 0 No error 6
On 40 64 Error occurs

7 Off 00 0 Not used. Fixed to Off

Bit 5: Becomes on when the paper end sensor detects paper end and printing stops.

n= 3: Error status

Bit Off/On Hex Decimal Function
0 Off 00 0 Not used. Fixed to Off
1 On 02 2 Not used. Fixed to On
2 - - - Undefined

Off 00 0 No auto-cutter error 3
On 08 8 Auto-cutter error occurs

4 On 10 16 Not used. Fixed to On

Off 00 0 No unrecoverable error 5
On 20 32 Unrecoverable error occurs
Off 00 0 No auto-recoverable error 6
On 40 64 Auto recoverable error occurs

7 Off 00 0 Not used. Fixed to Off

Bit 3: If these errors occur due to paper jams or the like, it is possible to recover by

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correcting the cause of the error and executing DLE ENQ n (1 £ n £ 2). If an error
due to a circuit failure (e.g. wire break) occurs, it is impossible to recover.

Bit 6: When printing is stopped due to high print head temperature until the print head

temperature drops sufficiently or when the paper roll cover is open during printing,
bit 6 is On.

n = 4: Continuous paper sensor status

Bit Off/On Hex Decimal Function
0 Off 00 0 Not used. Fixed to Off
1 On 02 2 Not used. Fixed to On

Off 00 0 Paper roll near-end sensor: paper adequate 2,3

On 0C 12 Paper near-end is detected by the paper roll near-

endsensor.

4 On 10 16 Not used. Fixed to On

Off 00 0 Paper roll sensor: Paper present 5,6

On 60 96 Paper roll end detected by paper roll sensor
7 Off 00 0 Not used. Fixed to Off

[Reference] DLE ENQ, GS a, GS r

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DLE ENQ n

[Name] Real-time request to printer

[Format] ASCII DLE EOT n
Hex 10 05 n
Decimal 16 5 n

[Range] 1≤n≤2

[Description] Responds to a request from the host computer. n specifies the requests

as follows:
N Request
1 Recover from an error and restart printing from the line where the error occurred
2 Recover from an error aft clearing the receive and print buffers

[Notes] This command is effective only when an auto-cutter error occurs

The printer starts processing data upon receiving this command.

This command is executed even when the printer is off-line, the receive

buffer is full, or there is an error status with a serial interface model.

With a parallel interface model, this command can not be executed

when the printer is busy. This command is executed even when the

printer is off-line or there is an error status when DIP switch 2-1 is on

with a parallel interface model.

The status is also transmitted whenever the data sequence of

<10>H<05>H< n> (1≤ n≤ 2) is received.

Example:

In ESC * ** * m

This command should not be contained within another command that

consists of two or more bytes.

Example:

If you attempt to transmit ESC 3 n to the printer, but DTR (DSR for the

host computer) goes to MARK before n is transmitted, and DLE ENQ 2

interrupts before n is received, the code <10>H for DLE ENQ 2 is

processed as the code for ESC 3 <10>H.

DLE ENQ 2 enables the printer to recover from an error after clearing the

data in the receive buffer and the print buffer. The printer retains the

settings (by ESC !, ESC 3, etc.) that were in effect when the error

occurred. The printer can be initialized completely by using this

nL nH dk, d1 = <10>H, d2 = <05>H, d3 = <01>H

TITLE : WTP-100

Page26

Document : 010608C

Revision : 01

06/ 08/ 2001