This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to corect the interference at his own expense.
For compliance with the Federal Noise Interference Standard, this equipment requires a
shielded cable.
This statement will be applied only for the printers marketed in U.S.A.
Statement of
The Canadian Department of Communications
Radio Interference Regulations
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital
apparatus set out in the Radio Interference Regulations of the Canadian Department of
Communications.
Le présent appareil numérique n’émet pas de bruits radioélectiques dépassant les limites
applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le
brouillage radioélectrique édicté par le ministère des Communications du Canada.
The above statement applies only to printers marketed in Canada.
Trademark acknowledgments
DP8340R: Star Micronics Co. Ltd.
Notice
•All rights reserved. Reproduction of any part of this manual in any form whatsoever, without STAR’s express
permission, is strictly forbidden.
•The contents of this manual are subject to change without notice.
•All efforts have been made to ensure the accuracy of the contents of this manual at the time of printing. However,
should any errors be found, STAR would greatly appreciate being informed of them.
•The above notwithstanding, STAR can assume no responsibility for any errors in this manual.
10. CHARACTER CODE LIST..............................................................43
11. WHEN POWER IS SUPPLIED BY THE USER .............................46
1. OUTLINE
The DP8340R series of serial dot matrix printers is for use in ECR, POS,
electronic instruments, banking machines and computer peripheral equipment.
The DP8340R series include the following features;
1)2 color printing (Red and Black)
2)High-speed bidirectional printing (2 line/sec, 29 or 44 columns per line)
3)9-pin print head
4)The interface conforms to RS-232C in M type, and to RS-232C/20mA
Current Loop in D type.
5)Commands for expanded characters, inverted characters, emphasized
characters, red and black printing, and 10CPI or 15CPI characters etc. are
provided, which makes the printer very versatile.
6)Simultaneous Data Communication and Printing
7)Error Checking Protocol
8)Peripheral Driver
9)One line validation printing (Option)
Model Name Notation
– 1 –
2. UNPACKING AND INSTALLATION
2-1.Unpacking
After opening the box, check if all necessary accessories are included.
2-2.Installation of P aper Holders and Re-Roll P r e vention Guar d
Install the Paper Holders in the intermost holes in the rear of the printer.
Figure 2-2. Installation of Paper Holders
– 3 –
Install the Re-Roll Prevention Wire in the holes of the printer cover. Twisting the
Wire as shown in the figure below, will make the installation easier.
Figure 2-3. Installation of Re-Roll Prevention
2-3.Handling Notes
(1)Install the printer near an easily accessible socket-outlet.
(2)Place the unit on a flat and stable surface for operation.
(3)Do not connect the AC Power Plug to the same outlet used for other noise
generating devices (large motors, etc.).
(4)Be careful not to drop paper clips, pins and other foreign objects into the
unit.
(5)Wipe off dirt with a soft cloth soaked in alcohol or benzine. Do not use
Lacquer thinner, Trichlorethelene or Ketone solvents because they may
damage plastic parts.
(6)Use a soft brush, etc. for cleaning the printer mechanism and PCB.
(7)Keep hands out of printer while power is on.
(8)Do not attempt to print when there is no ink ribbon or paper in the unit. The
print head life could be severly reduced.
(9)If the paper is fastened tightly to the roll, the paper may not detach from the
roll when the end is reached.
If this happens, the no paper detection function and paper feed will not
operate.
(10) Always keep the printer cover attached when printing to prevent paper
jams, noise, and other problems.
(11) Always turn the power off before opening the printer cover. (e.g. When
renewing a ink ribbon)
– 4 –
3. PART IDENTIFICATION AND NOMENCLATURE
3-1.Power Supply Unit
DC Power Connector (Output)
Shape of AC Power plug will
vary according to destinations.
Figure 3-1. Power Supply Unit
– 5 –
3-2.Printer
Figure 3-2. Printer: Front View
Figure 3-3. Printer: Rear View
– 6 –
3-3.Part Functional Description
(1)AC Power PlugConnect to an outlet of the specified voltage.
(2)DC Power OutletSupplies DC 12V power to the printer.
(3)Printer CoverProtects the printer against dust and reduces noise.
(4)POWER LampLights up (green LED) when power is on.
(5)ON LINE LampLights up (green LED) when the unit is in the online
mode.
(6)ALARM LampLights up (red LED) when printer operation is not
normal, or the printer is out of paper. It is necessary
to install paper into the printer and press the ON
LINE Button to recover from paper empty status.
Turn off the printer power in order to recover from
abnormal operation.
(7)ON LINE ButtonToggles between the on-line and off-line modes. The
printer will go on-line after turning power on.
(8)FEED ButtonMomentary operation of this button provides one
line feed. Pressing this button continuously will
cause continuous paper feed. If power is turned on
while pressing this button, self printing*1 will be
performed.
(9)Interface Connector Connects the printer to host computers. Check that
both computer and printer are off before connecting.
(10) DIP SwitchesAllows for setting of various functions according to
user requirements.
*1Self PrintingThis printer has another convenient function, the
Automatic Test Printing. With the ink ribbon and
paper properly installed in the printer, turn the power
ON while holding down the Feed switch. Test printing will start and stop again automatically.
– 7 –
4. INSTALLATION OF INK RIBBON AND PAPER
4-1.Installation of Ink Ribbon
(1)Turn power off, lift the Printer Cover up and remove it.
Note: Be careful not to touch the print head immediately after printing,
because it can get very hot.
Figure 4-1. Printer Cover Removal
(2)Unwind ribbon so that the spools are separated as shown in Figure 4-3.
Hold the ribbon taut as shown with the drive pins facing down and slide the
ribbon between the print head and the platen. While keeping the ribbon taut,
wrap one side around the black ribbon guide on the end of the platen and
drop one spool on the spool shaft. As you move the spool downwards, move
the detecting lever aside to allow the spool to drop into place. Make sure the
spool drive pins engage with the spool drive holes. As the spool drops into
place there will be a click.
(3)While continuing to hold the ribbon taut, install the remaining ribbon spool
in a similar fashion.
(4)Turn the spool that rotates freely to take up the ribbon slack.
Ribbon Life
Description
SF-03BRApprox.Approx.
(Fuji Kagakushi0.8 million0.4 million
Kogyo Co., Ltd.)characterscharacters
Ribbon life
BlackRed
– 8 –
Ribbon Life
Description
SF-03BApprox.
(Fuji Kagakushi0.8 million
Kogyo Co., Ltd.)characters
Figure 4-2. Installation of Ink Ribbon
Ribbon life
Black
Figure 4-3. Ribbon Spools
4-2.Removal of Ink Ribbon
Hold the spool and lift gently, rotating it until the ribbon sags. Push the ribbon
detecting lever out, lift the spool until it comes off the shaft. Remove the second
spool in a similar manner.
(Do not apply excessive force when lifting spools.)
– 9 –
4-3.Paper Insertion
4-3-1.For Roll Paper
(1)Cut the Roll Paper end straight and square. Hold the roll so that the paper
comes from the bottom.
(2)Attach the Roll Paper to the Holders Paper by slipping one side of the roll
onto the Hub and pulling the other Hub out to allow the roll to slip in place.
(3)Insert the paper evenly into the Paper Insertion Slot.
(4)Turn the Power Switch “ON”, and press the FEED Button. The paper will
be fed into the unit.
Figure 4-4. Paper Insertion (1)
Figure 4-5. Paper Insertion (2)
– 10 –
4-3-2.Roll Paper Installation (When using the optional Printer Cover 8340R)
When installing roll paper with the optional “Ptinter Cover 8340R”, please use
the following procedure.
(1)Turn power off, lift the Printer Cover up and remove it.
Note: Be careful not to touch the print head immediately after printing
because it can get very hot.
(2)Insert paper into the printer, and feed the paper so it extends 3 inches or
more above the top surface of the printer.
(3)Insert the paper into the slot in the “Printer Cover 8340R”.
(4)Install the “Printer Cover 8340R” on the printer.
Figure 4-6. Replace the Printer Cover
Figure 4-7. Printer Cover 8340R
– 11 –
4-3-3.Validation Option Installation
The validation printing requires the optional printer cover 8340R. Refer to
item 4-3-2 for the installation.
(1)Turn power ON.
(2)Enter the printer the validation mode.
(Refer to the control code “GS” in Chapter 5.)
(3)Insert the material to be validated against the right side of the slot in the
Printer Cover 8340R.
Figure 4-8. Insertion of Material to be validated
4-4.Roll Paper Removal
Cut the paper close to the slot and use the feed button until paper has passed
completely through the printer.
Note: Do not try to remove the paper by hand as it could become crooked and
get jammed inside the printer.
– 12 –
5. CONTROL CODES
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
LF
(0A)
H
Print and line feed instruction
The LF code causes the data in the line buffer to be printed,
followed by a single line feed. When the line buffer is empty,
only the feed takes place.
CR
(0D)
H
Print and line feed instruction
Same function as of LF code.
However, when the DIP switch 2-4 is ON, the CR code
becomes invalid.
SO
(0E)
H
Expanded character instruction
This code causes the printer to print expanded characters
twice as wide as the regular ones. This remains in effect until
a DC4 code is received.
DC4
(14)
H
Release from expanded characters
OUTLINE
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
OUTLINE
The expanded character instruction is released by the DC4
code, and the succeeding data is printed as regular width
characters.
ESC-1
(1B)
H (2D)H (01)H or (1B)H (2D)H (31)H
Underline mode selection
All data received after this code is underlined until a ESC-0
is received.
ESC-0
(1B)
H (2D)H (00)H or (1B)H (2D)H (30)H
Release from underline mode
The underline mode selection is released by this code.
– 13 –
CODE
FUNCTION
SI
(0F)
H
Inverted print instruction
OUTLINE
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
OUTLINE
This function causes the printing to be inverted. This code
must be received at the beginning of a line. If this code is
received anywhere other than at the beginning of a line, it is
disregarded. Accordingly, normal characters and inverted
characters, can not be mixed on the same line.
DC2
(12)
H
Release from inverted print instruction
The inverted print instruction is released by this code. This
code must be received at the beginning of a line.
ESC E
(1B)
H (45)H
Emphasized print mode instruction
Data following this command is printed with emphasized
characters.
In this mode, characters are printed in a single direction.
ESC F
(1B)
H (46)H
Release from emphasized print instruction
Emphasized print is released.
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
OUTLINE
ESC 4
(1B)
H (34)H
Red character print instruction
This command causes subsequent data to be printed with red
characters.
The instruction is released by the code, ESC 5.
Red and black characters may be intermixed.
This command is ignored when DIP SW 2-3 is OFF.
ESC 5
(1B)
H (35)H
Release from red character print instruction
The red character print instruction is released by this code.
– 14 –
CODE
FUNCTION
OUTLINE
ESC a n
(1B)
H (61)H n
n-line feed
After printing the data in the current line, n lines are fed by this
code. The value of n ranges from 1 to 120.
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
OUTLINE
ESC C n
(1B)
H (43)H n
Sets page length in lines
This code sets the length of a page to n lines. The value of n
ranges from 1 to 120. On initialization, the page length
default condition will be 42 lines. The line feed pitch is onesixth inch.
ESC Nn
(1B)
H (4E)H n
Sets bottom margin in lines
Upon receiving this code, the bottom margin is set to n lines.
0
n 120; Default Value n = 0
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
OUTLINE
ESC O
(1B)
H (4F)H
Cancels bottom margin.
Upon input of this code, bottom margin setting is cleared.
FF
(0C)
H
Form feed
The FF code prints the data in the current line and transports
the paper to the start of the next page.
– 15 –
CODE
FUNCTION
OUTLINE
ESC @
(1B)
H (40)H
Printer initialization
All printing conditions except ESC BEL n1 n2, the line buffer
and data buffer are set to the power on default condition.
CODE
FUNCTION
OUTLINE
ESC BEL n1 n2
(1B)H (07)H n1 n2
Sets peripheral unit drive pulse duration.
This command sets the pulse duration for peripheral unit
drive (Paper Cutter, Take-Up Device, cash drawer, etc.)
Pulse Duration = 10 × n
Delay = 10 × n
1
n1 127; 1 n2 127
Default value: n
2 (ms)
1 = n2 = 20
1 (ms)
CODE
FUNCTION
OUTLINE
Executed by BEL code and FS code after printing.
BEL
(07)
H
Trigger peripheral unit drive (Deferred)
Causes a peripheral drive pulse to be generated. This code is
normally stored in the buffer and is performed as it is received
from the data queue.
– 16 –
CODE
FUNCTION
FS
(1C)
H
Trigger peripheral unit drive (immediate)
OUTLINE
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
OUTLINE
Causes a peripheral drive pulse to be generated immediately
ENQ
(05)
H
Enquiry
When this code is received, the printer outputs status data.
If it is input after text data input in the STX-ETX mode, the
printer outputs status data and the check byte.
STX
(02)
H
Start of text
When this code is received, the printer enters the STX-ETX
mode. This code is ignored if received when STX-ETX mode
is already in effect.
ETX
(03)
H
End of text
When this code is received, the printer leaves the STX-ETX
mode. Contents of the data buffer is printed, this code is
ignored if received before ENQ.
CODE
FUNCTION
OUTLINE
CODE
FUNCTION
OUTLINE
CAN
(18)
H
Clears print buffer
Upon input of this code the data buffer and line buffer is
cleared.
ESC P
(1B)
H (50)H
Select 10 CPI
This code causes the printer to print at 10 CPI. The number
of columns per is 29.
– 17 –
CODE
FUNCTION
OUTLINE
ESC M
(1B)
H (4D)H
Select 15 CPI
This code causes the printer to print at 15 CPI. The number
of columns per line is 44. When the power is turned on, the
15 CPI mode is selected.
CODE
FUNCTION
OUTLINE
REMARKS
GS
(1D)
H
Validation printing instruction
This code causes the printer to perform validation printing
of a maximum of 32 subsequent characters (at 15 CPI, from
the thirteenth to the forty-forth column).
After the GS code is received, a maximum of 32 characters
should be input, followed by the LF code which indicates
the end of the validation printing data.
(At this time, control codes except FS, ENQ, CAN and SUB
codes, or any character received beyond the limit of 32
characters are ignored.)
When the printer enters the validation mode, the ribbon is
shifted up and the ON-LINE lamp blinks. (This lamp goes
on and off at a 0.5-second interval until the end of the validation mode.) After the material to be validated is inserted,
and the LF button is pressed, the validate line is printed,
followed by a single line feed. When the check is removed
and the ON-LINE button is pressed, the printer returns to
regular mode and is set to ON-LINE status.
1) The print settings by commands (such as emphasized
mode and underline mode) are invalid only during val-
idation printing.
2) When the CAN code is received in the validation mode,
the printer returns to regular mode, and the mechanism
is initialized.
3) If the FS or SUB codes is received in the validation
mode, these codes are executed just after the printer
returns to regular mode.
4) In the validation mode, the LF button and the ON-LINE
button do not work except the above behavior.
5) If the printer has a Red black ribbon installed, the validate line will be printed in red.
– 18 –
Character Code List
CharacterCodeFunction
1 LF(0A)HPrint and line feed instruction
2 CR(0D)HPrint and line feed instruction
(same as LF)
3 SO(0E)HExpanded character instruction
4 DC4(14)HExpanded character release
5 ESC-1(1B)H (2D)H(01)HUnderline instruction
(one-way printing)
10 ESC F(1B)H (46)HEmphasized print release
11 ESC 4(1B)H (34)HRed character print instruction
12 ESC 5(1B)H (35)HRed character print release
13 ESC a n(1B)H (61)H nn-line feed instruction
14 ESC C n(1B)H (43)H nSets page length in lines
1
n 120 (default n = 42)
15 ESC N n(1B)H (4E)H nSet bottom margin in lines
0
n 120 (default n = 0)
16 ESC O(1B)H (4F)HCancel Bottom margin
17 FF(0C)HForm feed
18 ESC @(1B)H (40)HPrinter initialization instruction
19 ESC BEL(1B)H (07)HSet peripheral unit drive pulse duration
n
1 n2 n1 n21 n1 127, 1 n2 127
(default n
20 BEL(07)HTrigger peripheral unit drive (Deferred)
21 FS(1C)HTrigger peripheral unit drive
(Immediate)
22 ENQ(05)HEnquiry
23 STX(02)HStart of text enter STX-ETX mode
24 ETX(03)HEnd of text end STX-ETX mode
25 CAN(18)HClears print buffer
26 ESC P(1B)H (50)HSelect 10 CPI
27 ESC M(1B)H (4D)HSelect 15 CPI (Default value)
28 GS(1D)HValidation printing instruction
1 = n2 = 20)
– 19 –
6. GENERAL SPECIFICATIONS
Printing methodSerial impact dot matrix printing,
9 wires
Number of print columns 29 columns (10CPI), 44 columns (15CPI)
Print speedApprox. 2 lines/sec
Print directionBi-directional
Line spacing1/6 inch
Paper feed methodFriction Feed
Paper feed speedApprox. 12 lines/sec
Character setASCII96 characters
Special64 characters
Block graphics*64 characters
Font configuration10CPI Ordinary characters5 × 9 dots
Block graphics*6 × 6 dots
15CPI Ordinary characters7 × 9 half dots
Block graphics*5 × 6 dots
* Graphic Feed Not Available
Character size10CPI2.00 (H) × 2.42 (V) mm
15CPI1.32 (H) × 2.42 (V) mm
Character spacing10CPI2.55 mm (1/10 inch)
15CPI1.70 mm (1/15 inch)
Dot spacing10CPIH=0.425 mm V=0.353 mm
15CPIH=0.340 mm V=0.353 mm
Gross dot10CPI174 dots/wire/line
15CPI220 dots/wire/line
Print area10CPI73.53 mm
15CPI74.46 mm
Print BufferApprox. 1.5 KB
Peripheral drive1 output (1A max. at 12V)
Serial Interface
Model DP8340-RMOnly RS-232C
Model DP8340-RDRS-232C/20mA Current Loop
External dimensions
(Printer)202(W) × 200(D) × 98(H) mm
(without paper holder, DC Power Connector)
(Power supply unit)60(W) × 120(D) × 36(H) mm (without AC cable)
Weight
(Printer)Approx. 1.9 kg
(Power supply unit)Approx. 0.4 kg (without AC cable)
– 20 –
Power supply unit
Four supplies available with following ratings
InputOutput
AC 100 – 240 V DC 12.0 V ± 5%
47Hz – 63 Hz
0.8 A Max2.0 A
Paper specification
Paper typeOrdinary and carbonless copy paper
Size Paper width82.55
± 0.5mm (3.25 inches)
Roll diameter80 mm outer diameter (Max)
2
Thickness (single)0.07 mm (52.3 g/m
) to 0.09 mm (64g/m2)
(2 copy)One copy and one original (max 0.13 mm)
Paper endPaper should not be attached to the core
One line validationCheck (Refer to Fig. 6-2)
Paper width 70 to 90 mm
Thickness 0.1 to 0.15 mm
*Requires the optional Printer Cover 8340R
Ink ribbon specification
ColorBlack and red / Black only
Ribbon materialNylon (#40 denier)
Ribbon size13mm × 6m
Spool13mm (width), 35mm in diameter (two spool)
Recommended ribbonSF-03BR (Black and red), SF-03B (Black)
(manufactured by Fuji Kagakushi Kogyo Co., Ltd.)
or approved equivalent.
Operating conditionsTemperature+5˚C — +40˚C
Humidity10% — 80%RH
Storage conditionsTemperature–20˚C — +70˚C
Humidity5% — 95%RH (+40˚C)
Head life70 million characters
Printer reliability5.0 million lines MCBF (except head life)
– 21 –
Figure 6-1. Roll Paper and Print Area
Figure 6-2. Material to be validated and One Line Validation Printing
– 22 –
Figure 6-3. External Dimensions (Printer)
60mm
Shape of AC Power plug will
vary according to destinations.
Note: STX-ETX Mode may use DTR or X-ON/X-OFF, selected by DIP SW 1-
5. See Chapter 9. for details.
7-2.Interface Circuit
Input (RXD, CTS)
Output (DTR, FAULT, TXD, RTS)
Figure 7-1. RS-232C Interface
– 24 –
7-3.Setting of the DIP Switches
7-3-1.DIP-SW 1
SwitchONOFF
1-1ON
1-2Data transfer rate — see below (*1)ON
1-3ON
1-4Stop bit 1Stop bit 2ON
1-5DTR MODE (1 BLOCK)X-ON/X-OFF MODEON
1-68 data bits7 data bitsON
1-7No parityParity checkedON
1-8Odd parityEven parityON
be set to ON when you
use a 2-color ribbon for
2-color printing.
It should be set to OFF
when a monochrome
ribbon is used.
7-3-2.DIP-SW2
SwitchONOFF
2-1
2-2Always ONON
2-3(*2)2-color RibbonMonochrome RibbonON
2-4CR InvalidCR ValidON
International character set :
U.S.AFRANCE
Factory
setting
Note: DIP switches are only read by the
controller at power turn on. DIP
switch changes should be made
with power off, or after changing
switch setting, turn the power off
and on again.
ON
– 25 –
Figure 7-2. Setting of DIP Switch
7-4.Connectors and Signals
Pin No.
1GND—Shield Ground
2GND—Frame Ground
3TXDOUT
4RXDINThis pin carries data to the printer.
5RTSOUTThis is SPACE when the printer power is ON.
6FAULTOUT
7GND—Signal ground.
8DTROUT
Signal
Name
DirectionFunction
This pin carries data from the printer.
(Return channel)
This is MARK when the printer is abnormal.
(Refer to Error Condition Alarm Mode *1.)
Or there is a paper error.
This printer turns this pin SPACE when
it is ready to receive data.
Figure 7-3. Modular Jack Connector
*1 Error Condition Alarm Mode
If an error condition is detected during operation, the printer will stop
printing and cause the FAULT signal to go MARK. All solenoides &
motors will be de-energized. It is necessary to turn the printer power
off and on again in order to recover from the alarm mode.
This printer can detect the following error coditions:
a. Motor Lock
b. Defective timing detector
c. Micro-proccessor out of program sequence
– 26 –
7-5.Interface Connections
For interface connections, refer to the instructions for interface of the host
computer. The following gives basic examples.
Figure 7-4. Interface Connections using Modular/D-Sub 25 Adapter to IBM PC
(Use with straight through cable wiring)
Before selecting interface cable wiring, it is necessary to know the wiring of the
modular interconnect cable. Figure 7-5. below shows the way to determine if the
cable is straight connected, or cross connected. Cross connected wiring is not
suitable for shielded cable.
M
TYPE
ONLY
Figure 7-5.
– 27 –
Figure 7-6. Wiring of cable for direct connection between DP8340
and IBM PC serial part
7-6.Peripheral Unit Drive Circuit
The Control Board of this unit is equipped with a circuit for driving a peripheral
unit (Paper Cutter, Take-Up Device, Cash Drawer, etc.)
The Control Board Connector (CN3) is used to connect the Peripheral Unit to the
Drive Circuit. When using this circuit connect the peripheral unit cable to the CN3
Connector (cable is not included). Use a cable with the following specifications:
Note: Do not run cable near devices generating large amounts of electrical
noise.
Figure 7-7. Cable Specifications
7-6-1.Cable Connection
Remove the printer Bottom Cover and connect the cable to the CN3 Connector.
Pass the cable around the control board as shown and through grommetted hole
in bottom cover. (Grommet may have to be cut)
– 28 –
Figure 7-8. Cable Connection
7-6-2.Peripheral Drive Circuit
Absolute Ratings (Ta = 25˚C)
D1Voltage Breakdown100V
Peak Forward Current1A
Drive
Output
M
TYPE
ONLY
12V, MAX. 1A
Figure 7-9. Drive Circuit
Caution: Do not use external power supply with peripheral drive circuit.
7-6-3.Control Codes
Codes for Drive Circuit control are ESC BEL n1 n2, BEL and FS. Refer to the
Control Codes in Chapter 5.
– 29 –
8. INTERFACE FOR MODEL DP8340RD
(D-SUB 25 PIN CONNECTOR)
Note: STX-ETX Mode may use DTR or X-ON/Y-OFF, selected by DIP SW 1-
5. See Chapter 9. for details.
– 30 –
8-2.Interface Circuit
8-2-1.RS-232C
Input (RXD, CTS)
Output (DTR, FAULT, TXD, RCH, RTS)
Figure 8-1. RS232-C Interface
8-2-2.Current Loop
Input (TTY-RXD, TTY-RXDR)
D
TYPE
ONLY
Output (TTY-TXD, TTY-TXDR)
Note: Resistance should be set so that Current Loop is restricted to the range of
10 ~ 20 mA.
Figure 8-2. Current Loop Interface
– 31 –
8-3. Setting of the DIP Switches
8-3-1.DIP-SW 1
SwitchONOFF
1-1ON
1-2Data transfer rate — see below (*1)ON
1-3ON
1-4Stop bit 1Stop bit 2ON
1-5DTR MODE (1 BLOCK)X-ON/X-OFF MODEON
1-68 data bits7 data bitsON
1-7No parityParity checkedON
1-8Odd parityEven parityON
be set to ON when you
use a 2-color ribbon for
2-color printing.
It should be set to OFF
when a monochrome
ribbon is used.
8-3-2.DIP-SW 2
SwitchONOFF
2-1
2-2Always ONON
2-3(*2)2-color RibbonMonochrome RibbonON
2-4CR InvalidCR ValidON
International character set :
U.S.AFRANCE
Factory
setting
Note: DIP switches are only read by the
controller at power turn on. DIP
switch changes should be made
with power off, or after changing
switch setting, turn the power off
and on again.
ON
– 32 –
Figure 8-3. Setting of DIP Switch
8-4.Jumper Setting
The serial interface is set to the RS-232C mode upon shipment from the factory.
When using in the 20mA current loop mode, it is necessary to set the jumpers.
The jumpers built into the Control Board allow for setting of functions shown in
the table. However, the Bottom Cover must be removed to perform this setting.
For setting the Jumper, disconnect the power source beforehand.
8-4-1.Removal of the Bottom Cover
Figure 8-4. Removal of the Bottom Cover
8-4-2.Setting of Jumper
Jumper
No.
SettingFunction
Factory
Setting
D
TYPE
ONLY
OPENRS-232C
J3
SHORTCurrent Loop
A-C
J7
B-C
Selection of Current Loop
Output (between TTY-TXD and
TTY-TXDR) Signal Polarity
(inversion possible) Consult
STAR MICRONICS for details.
– 33 –
8-5.Connectors and Signals
Pin No.
1GND—Frame Ground
2TXDOUT
3RXDINThis pin carries data to the printer.
4RTSOUTThis is SPACE when the printer power is ON.
5CTSIN
6DSRIN
7GND—Signal ground.
8N/CUnused.
9TTY TXDR—
10TTY TXDOUT
11RCHOUT
12N/CUnused.
13GND—Signal ground.
14FAULTOUT
15 ~ 16N/CUnused.
17TTY TXDR—
18TTY RXDR—
19TTY RXDIN
20DTROUT
21 ~ 22N/CUnused.
23TTY RXDR—
24TTY TXDOUT
25TTY RXDIN
Signal
Name
DirectionFunction
This pin carries data from the printer.
(Return channel)
This pin is SPACE when the computer is
ready to send data.The printer does not
check this pin.
This pin is SPACE when the computer is
ready to send data.The printer does not
check this pin.
This pin is the return path for data
transmitted from the printer on the 20mA
current loop.
This pin carries data from the printer on the
20mA current loop.
This pin is SPACE when the printer is ready
to receive data. This line carries the same
signal as pin 20.
This is MARK when the printer is abnormal. (Refer to Error Condition Alarm Mode
*1.) Or there is a paper error.
This pin is the return path for data transmitted from the printer on the 20mA current
loop.
This pin is the return path for data transmitted to the printer on the 20mA current
loop.
This pin carries data to the printer on the
20mA current loop.
This printer turns this pin SPACE when it is
ready to receive data.
This pin is the return path for data transmitted to the printer on the 20mA current
loop.
This pin carries data from the printer on the
20mA current loop.
This pin carries data to the printer on the
20mA current loop.
– 34 –
Figure 8-5. D-Sub 25 Pin Connector
*1 Error Condition Alarm Mode
If an error condition is detected during operation, the printer will stop
printing and cause the FAULT signal to go MARK. All solenoides & motors
will be de-energized. It is necessary to turn the printer power off and on again
in order to recover from the alarm mode.
This printer can detect the following error coditions:
a. Motor Lock
b. Defective timing detector
c. Micro-proccessor out of program sequence
8-6.Interface Connections
For interface connections, refer to the instructions for interface of the host
computer. The following gives one basic example of connections.
D
TYPE
ONLY
Figure 8-6. Interface Connections
with D-Sub 25 Pin Connector to IBM PC
– 35 –
8-7.Peripheral Unit Drive Circuit
The Control Board of this unit is equipped with a circuit for driving a peripheral
unit (Paper Cutter, Take-Up Device, Cash Drawer, etc.)
The Control Board Connector (CN3) is used to connect the Peripheral Unit to the
Drive Circuit. When using this circuit connect the peripheral unit cable to the CN3
Connector (cable is not included). Use a cable with the following specifications:
Note: Do not run cable near devices generating large amounts of electrical
noise.
Figure 8-7. Cable Specifications
8-7-1.Cable Connection
Remove the printer Bottom Cover and connect the cable to the CN3 Connector.
Pass the cable around the control board as shown and through grommetted hole
in bottom cover. (Grommet may have to be cut)
– 36 –
Figure 8-8. Cable Connection
8-7-2.Peripheral Drive Circuit
Absolute Ratings (Ta = 25˚C)
D1
Voltage Breakdown100V
Peak Forward Current1A
Drive
Output
D
TYPE
ONLY
12V, MAX. 1A
Figure 8-9. Drive Circuit
Caution:Do not use external power supply with peripheral drive circuit.
8-7-3.Control Codes
Codes for Drive Circuit control are ESC BEL n
Control Codes in Chapter 5.
– 37 –
1 n2, BEL and FS. Refer to the
9. DATA STRUCTURE AND CONTROL
9-1.DTR Mode (1 BLOCK)
Controls Data Transfer by using DTR line as BUSY FLAG
(a)
(b) In case of Paper Empty
Paper Empty
When the paper out detector indicates end of paper, the printer stops printing after
a maximum of two lines of printing or paper feed. The printer goes OFF LINE and
sets the DTR to “MARK” status immediately after occurrence of a paper empty.
It is necessary to install paper into the printer and press the ON LINE BUTTON
to light the ON LINE LAMP in order to recover from paper empty status.
Machine Error
A machine error may be generated by paper jamming or when the printer is unable
to print data. When a machine error occurs the printer stops printing. The printer
goes OFF LINE and sets the DTR to “MARK” status immediately after the
occurrence of Machine Error. It is necessary to turn the printer power off and on
again in order to recover from Machine Error.
– 38 –
9-2.X-ON/X-OFF Mode
The printer transmits an X-ON (Control Code; DC1, Hexadecimal Value; 11H,)
signal after power is turned on, if there is no printer error being generated. When
this signal is received by the host computer, the host computer transmits the data
to the printer. The X-ON signal is output intermittently every three seconds until
the host computer receives and responds to this signal.
The X-OFF (DC3, 13H) signal outputting begins when the amount of empty
space in the buffer becomes less than 256 bytes. When the computer receives the
X-OFF signal, it will halt data transmission as soon as it can. However even at this
time the printer can receive data until the buffer is completely full. An X-ON
signal is output when the contents of the buffer goes below 256 bytes. The
increase of the empty area in the buffer is caused by printing. If the computer
causes a buffer overflow, a flag bit in the status register will be set. (See Status)
The X-OFF signal will continue to be output at a 3-second interval until the data
buffer becomes near empty (less than 256 bytes).
– 39 –
Paper Empty
When the paper out detector indicates end of paper, the printer stops printing after
a maximum of two lines of printing or paper feed. The host computer can receive
the printer status by transmitting an ENQ code to the printer. The printer goes OFF
LINE and sets the DTR to “MARK” status in 5 seconds after occurrence of a paper
empty. It is necessary to install paper into the printer and press the ON LINE
BUTTON to light the ON LINE LAMP in order to recover from paper empty
status.
Machine Error
A machine error may be generated by paper jamming or when the printer is unable
to print data. When a machine error occurs the printer stops printing. In the X-ON/
X-OFF mode, the printer outputs an X-OFF signal immediately. At this time the
host computer can receive the printer status after transmitting an ENQ code to
printer. The printer goes OFF LINE and sets the DTR to “MARK” status within
5 seconds after the occurrence of Machine Error. It is necessary to turn the printer
power off and on again in order to recover from Machine Error.
STATUS
Parity
In DTR mode and X-ON/X-OFF mode parity check is done on vertical parity
only.
Framing Error
Framing Error occurs when SPACE signal is detected at STOP Bit time. Framing
error and vertical parity error will be indicated by printing “?”.
– 40 –
9-3.STX-ETX Mode
The start of the STX-ETX mode should occur with a totally empty print buffer.
This can be achieved by sending an ENQ code to the printer and checking the
status until the status code indicates an empty buffer. At that point, the STX code
is sent by the host computer followed by a data block. While receiving the data
block, the printer generates a horizontal parity check character. After the data
block is sent, the host computer sends an ENQ which causes the printer to return
2 characters, one would be the normal status character, and the second would be
the horizontal parity check character that was generated by the printer while the
data block was received.
The host computer checks the status character to determine if any vertical parity
errors or other errors occurred during block transmission, and checks the
horizontal parity character against a character generated in the host computer
while the data was transmitted. If there are no errors, ETX causes the buffer to be
printed, but if an error is detected, CAN code clears the buffer and the data is
transmitted again. Any control codes transmitted to the printer during the STXETX mode will be ignored as control codes, but will be included in the check
character. This is done to prevent a control code received in error from causing
printing of erroneous data.
STATUS
Parity
Vertical and horizontal parity check is executed in STX-ETX mode.
Framing Error
Framing Error occurs when SPACE signal is detected at STOP Bit time. Framing
error or even vertical parity error will be indicated by printing “?”.
– 41 –
STX-ETX Mode Flow Diagram
– 42 –
10. CHARACTER CODE LIST
– 43 –
– 44 –
International Character Sets
– 45 –
11. WHEN POWER IS SUPPLIED BY THE USER
When printer power is supplied by the user rather than through the accessory
power source unit, please be careful of the following points.
Note 1: The power supply must be +12V 2A or above. An electrolytic ca-
+10%
–5%
pacitor (C = 4700µF/25V to 6800µF/25V) must be connected across
the output of the power supply.
Note 2: A DC power plug is available as an option.
GND
+12V
GND
Reference: Design the power supply referring to the power supply circuit shown
below.
Note: A line noise filter must be used to prevent line transients from passing
through power supply. Filter design to be determined by environmental
noise requirements.
– 46 –
VAC14VC2100 ~ 200µF/25V
VDC12VZD1VZD = 14V (1W)
+10%
–5%
IAC2 ~ 3AC34700 ~ 6800µF/25V
C16800µF/25VTR12SD633 (TOSHIBA)
Other parameters may be determined by user.
Figure 11-1. Power Supply Reference Circuit
– 47 –
ELECTRONIC PRODUCTS DIVISION
STAR MICRONICS CO., LTD.
536 Nanatsushinnya, Shimizu, Shizuoka
424-0066 Japan
Tel: 0543-47-0112, Fax: 0543-48-5271
Please access the following URL
http://www.star-micronics.co.jp/service/sp_sup_e.htm
for the lastest revision of the manual.
OVERSEAS SUBSIDIARY COMPANIES
STAR MICRONICS AMERICA, INC.