Citizen BD2-2890DD s User manual

CONTROL BOARD FOR MLT-289
MODEL BD2-2890DD
Rev. 1.01 Issued on June 27th, 2003
Specifications

i
REVISION
Rev. No. Date Content
1.00 2003.03.18 First created.
1.01 2003.06.27 Factory setting of jumper J1-2 is changed.

ii
CONTENTS
1. OUTLINE ........................................................................................................................ 1
1.1 Features ............................................................................................................................................................. 1
1.2 Precaution .......................................................................................................................................................... 1
2. BASIC SPECIFICATIONS ........................................................................................... 2
3. CONNECTING CONNECTORS.................................................................................. 3
3.1 CN1 Connector for Printer Mechanism (For Print Head) ................................................................................. 3
3.2 CN2 Connector for Print Mechanism (For Motor & Sensor)............................................................................ 3
3.3 CN3 Connector for Interface ............................................................................................................................. 4
4. JUMPER SETTING ....................................................................................................... 6
5. POWER SUPPLY ........................................................................................................... 8
5.1 Specifications .................................................................................................................................................... 8
5.2 Precautions ........................................................................................................................................................ 8
6. SERIAL INTERFACE ................................................................................................... 9
6.1 Specifications .................................................................................................................................................... 9
6.2 Explanation of Input/Output Signals ............................................................................................................... 10
6.3 Error Detection ................................................................................................................................................ 10
6.4 Data Receiving Control ................................................................................................................................... 10
6.5 Buffering .......................................................................................................................................................... 11
6.6 Electrical Characteristics ................................................................................................................................. 11
7. ERROR HANDLING ................................................................................................... 12
7.1 Peripheral Circuit Errors ................................................................................................................................. 12
7.2 Operation Errors .............................................................................................................................................. 13
8. PRINTER MECHANISM CONTROL SYSTEM ..................................................... 14
8.1 Thermal Head Control System (Division Driving System)............................................................................. 14
8.1.1 Fixed Division Number System ................................................................................................................. 14
8.1.2 Variable Division Number System ............................................................................................................. 14
8.2 Motor Drive ..................................................................................................................................................... 15
8.2.1 Motor Drive Features ................................................................................................................................. 15
8.2.2 Maximum Motor Drive Speeds at Major Voltage ...................................................................................... 15

iii
9. PRINT CONTROL FUNCTIONS ............................................................................. 16
9.1 Command List ................................................................................................................................................. 16
9.2 Command Details ............................................................................................................................................ 18
9.2.1 Description of Items ................................................................................................................................... 18
10. CHARACTER CODE TABLE .................................................................................. 63
10.1 International................................................................................................................................................... 63
10.2 Japanese ......................................................................................................................................................... 64
10.3 International Character Set ............................................................................................................................ 65
APPENDIX 1. BLOCK DIAGRAM ............................................................................... 66
APPENDIX 2. OUTER DIMENSION ............................................................................ 67

BD2-2890DD SPECIFICATIONS
1
1. OUTLINE
This control boards is designed to be used to control our thermal printer, “MLT-289” series
through the computer etc.
As being provided with many abundant functions, it can be used widely in various applications.
Before you start using it, read this manual thoroughly and understand the content.
1.1 Features
(1) Ultra compact
(2) Input buffer incorporated.
(3) Bar code printing is available (dedicated command).
(4) User-defined character registration function (94 characters)
1.2 Precaution
(1) Make sure to turn OFF the power supply in case of connecting/disconnecting the connectors.
(2) Absolutely do not make a short circuit between the terminals of connectors.
(3) Use power supply, interface etc. following their specifications.
(4) Use the recommended paper shown below.
• Thermal Paper TF5KS-E2D (Nippon paper)
KF50-HDA (Shin-Oji paper)
F220VP, HP220A (Mitsubishi paper)

BD2-2890DD SPECIFICATIONS
2
2. BASIC SPECIFICATIONS
Printing system
Print width
Print Speed
Number of columns
Character dimensions
Character types
Bar code type
Line pitch
Interface
Input buffer
Supply voltage
Weight
Outer Dimension
Operating Environment
Storage Environment
Thermosensitive dot-matrix printing
48 mm
420 dot line/sec
Font A : 32 columns
Font B : 42 columns
Font A : 1.25 mm ×3.00 mm
Font B : 0.88 mm ×3.00 mm
Alphanumeric, international characters
UPC-A/E, JAN (EAN) 13/8 columns, ITFCODE 39, CODE128, CODABAR
4.23 mm (Can be changed by command)
Serial (Conforms to RS-232C)
2 K bytes
VCC: 5V ±5 % Approx. 130 mA (Self printing)
VP : 4.2V ~ 8.5V Approx. 1.5A (Ave) Approx. 4A (Peak) When 7.2V
Ordinal voltage is to be 7.2V (Max)
8.5V is a voltage, which is right after charging.
Approx. 35 g
50 mm (W) ×75 mm (D) (See outer drawing for details)
5 ~ 40˚C , 35 ~ 85% RH (with no dew condensation)
-20 ~ 60˚C , 10 ~ 90% RH (with no dew condensation)
Items Contents

BD2-2890DD SPECIFICATIONS
3
3. CONNECTING CONNECTORS
3.1 CN1 Connector for Printer Mechanism (For Print Head)
3.2 CN2 Connector for Print Mechanism (For Motor & Sensor)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
VH
VH
SI
GND
TM
STRB 1
STRB 2
Vdd
LATCH
GND
STRB 6
CP
GND
STRB 5
STRB 3
GND
GND
STRB 4
GND
GND
GND
VH
VH
VH
–
–
Output
–
Input
Output
Output
–
Output
–
Output
Output
–
Output
Output
–
–
Outpu
–
–
–
–
–
–
Function
Power for print head
Power for print head
Head data output signal
GND
Thermistor
Strobe 1
Strobe 2
Thermal head logics power (+5V)
Latch signal
GND
Strobe 6
Clock pulse
GND
Strobe 5
Strobe 3
GND
GND
Strobe 4
GND
GND
GND
Power for print head
Power for print head
Power for print head
Pin No. Signal Name I/O
Applicable Connector : 52806-2410 (Molex)
1
2
3
4
5
6
7
8
9
MOTOR B
MOTOR A
MOTOR B
MOTOR A
PE C
GND
PE A
H-UP
GND
Output
Output
Output
Output
Input
–
–
Input
–
Function
Operation signal for motor B
Operation signal for motor A
Operation signal for motor B
Operation signal for motor A
Photo-transistor collector (Paper sensor)
Photinterruptor emitter + cathode
Photo-LED anode (Paper sensor)
Head-up signal
Head-up sensor GND
Pin No. Signal Name I/O
Applicable Connector : 53047-0910 (Molex)

BD2-2890DD SPECIFICATIONS
4
3.3 CN3 Connector for Interface
1
2
3
4
A
B
C
D
TXD
Vcc
GND
Vp
RXD
DTR
GND
Vp
Output
––
––
––
Input
Output
––
––
Function
Serial Interface TXD
Power supply for circuit (5V)
GND
Power supply for operation
Serial Interface RXD
Serial Interface DTR
GND
Power supply for circuit (5V)
Pin No. Signal Name I/O
Applicable Connector: Amp 178217-2
1234
DCBA
1 - Txd A - Rxd
2 - Vcc B - DTR
3 - Gnd C - Gnd
4 - Vp D - Vp

BD2-2890DD SPECIFICATIONS
5
CAUTION:
1. Control circuit requires power supply only for one pin of each VP and GND.
However, Operation voltage is to be supplied to all of pin for safety use.
2. Serial interface equips a driver and receiver of RS-232C, make sure to use it at RS-232C
level.

BD2-2890DD SPECIFICATIONS
6
4. JUMPER SETTING
(1) JUMPER 1
J2-1
J2-2
J2-3
J2-4
J2-5
J2-6
J2-7
J2-8
International Character set
"
"
Not Used
Print Drive System
Print Density
(Supplementary)
Not Used
Mechanism
Factory Setting
Short
Short
Short
Open
Short
Short
Short
Open
Pin No. Function
See next page (4)
Combination with J1-3
See next page (5)
–
Open
–
Fixed division
MLT-289
–
Variable division
MLT-288
Short
J1-1
J1-2
J1-3
J1-4
J1-5
J1-6
J1-7
J1-8
Not used
CR Selection
Print Density
DTR/XON-XOFF
Baud Rate
"
"
"
–
LF Enable
XON-XOFF
Factory Setting
Open
Open
Open
Short
Open
Open
Short
Open
Open
–
LF Disable
DTR/DSR
Pin No. Function Short
Combination with J2-6 (See next page (5))
See below (3)
(2) JUMPER 2
(3) INTERFACE & BAUD RATE
Open
Open
Open
Open
Open
Open
Open
Open
Short
Short
Short
Short
Short
Short
Short
Short
Open
Open
Open
Open
Short
Short
Short
Short
Open
Open
Open
Open
Short
Short
Short
Short
–
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
J1-8 J1-7
Open
Open
Short
Short
Open
Open
Short
Short
Open
Open
Short
Short
Open
Open
Short
Short
J1-6
Open
Short
Open
Short
Open
Short
Open
Short
Open
Short
Open
Short
Open
Short
Open
Short
J1-5
–
Serial Input
"
"
"
"
"
"
"
"
"
"
"
"
"
"
Input Method
–
None
"
"
"
"
Odd
"
"
"
"
Even
"
"
"
"
Parity Baud Rate

BD2-2890DD SPECIFICATIONS
7
Note:
1. Input Buffer is 2k byte. (Fixed)
2. Serial data length is 8 bits. (Fixed)
If print tone is set at 2 or above, printing rate tends to be lowered.
(4) INTERNATIONAL CHARACTER SET
(5) PRINT DENSITY
Open
Open
Open
Open
Short
Short
Short
Short
Open
Open
Short
Short
Open
Open
Short
Short
J2-3 J2-2
Open
Short
Open
Short
Open
Short
Open
Short
J2-1
Japan (JIS)
Japan (Shift-JIS)
Sweden
Denmark 1
U.K.
Germany
France
U.S.A
InternationalCharacter
Open
Open
Short
Short
Open
Short
Open
Short
J1-3 J2-6
Light
Standard
Slightly Dark
Dark
Print Density
0
1
2
3
Level
80%
100%
120%
150%
Print Density Rate

BD2-2890DD SPECIFICATIONS
8
5. POWER SUPPLY
5.1 Specifications
VCC : 5V ±5% Approx. 130 mA
VP : 4.2V ~ 8.5V Approx. 1.5A (Peak : Approx. 4A) when 7.2V
Ordinal Voltage is to be 7.2V (Max). 8.5V is a voltage that is right after charging.
8.5V cannot be used for ordinal voltage.
5.2 Precautions
(1) Design the product to supply power to Vcc before VP when power is supplied to this control
board.
(2) Design the product to turn off the power for Vcc after VP when power is turned off.
(3) Make sure to turn off the power in case of connecting/disconnecting connectors.
(4) Make sure to use Vcc and VP following their specifications.
(5) Make sure to use this control board connecting all of terminals between VP and GND.

BD2-2890DD SPECIFICATIONS
9
6. SERIAL INTERFACE
6.1 Specifications
(1) Data transfer system: Asynchronous
(2) Baud rates
1200, 2400, 4800, 9600, 19200 bps (Selectable by user)
(3) Configuration of one word
Start bit : 1 bit
Data bit : 8 bits Fixed
Parity bit : Odd/Even or No parity (Selectable by user)
Stop bit : 1 bit or more
(4) Signal polarity
RS-232C
• Mark = logic “ 1” (–3V ~ –12V)
• Space = logic “ 0” (+3V ~ +12V)
(5) Receiving data (RD signal)
RS-232C
• Mark = 1
• Space = 0
(6) Receiving control (DTR signal)
RS-232C
• Mark : Data transfer is not available
• Space : Data transfer is available
(7) Transmission control (TD signal)
DC1 code (11H) X-ON : Data reception is available
DC3 code (13H) X-OFF : Data reception is not available

BD2-2890DD SPECIFICATIONS
10
6.2 Explanation of Input/Output Signals
(1) RXD
Serial receiving data signal. On occurrence of framing error, overrun error, or parity error, the
data is printed as “?”.
(2) DTR
When this signal is READY, write data or a command. When they are written in BUSY, overrun
error is occurred and data is ignored. Data can be written into the input buffer even when the
printer is busy printing. A BUSY also occurs when the printer is powered on, in test print, in
Online mode, or being reset.
(3) TXD
If data remaining in the printer's input buffer is 256 bytes or less, the printer transfers a DC3
(13H: Data Receive Not Ready) signal to the host. If data in the input buffer exceeds 256 bytes,
the printer transfers a DC1 (11H: Data Receive Ready) signal to the host.
(4) GND
Common GND on the circuit.
6.3 Error Detection
Parity, framing, and overrun are detected. On detection of any error, the data are stored in the
buffer as “?”.
(1) Framing Error
With “space”state having been detected on detection of a stop bit, error takes place.
The data are stored in the buffer as “?”.
(2) Parity Error
With an error having been detected under specifying parity check, the data is stored in the buffer
as “?”.
(3) Overrun Error
On detection of an overrun error, the data are stored in the buffer as “?”.
6.4 Data Receiving Control
When DTR/DSR control having been selected, with BUSY signal at “LOW”, data from the host
side are received. With the signal at “HIGH”, they can not be received.
When DTR/DSR control not having been selected, after X-ON transmission, data is received
from the host side. No transmission of data can take place after X-OFF is transmitted.

BD2-2890DD SPECIFICATIONS
11
6.5 Buffering
Data transfer to the input buffer include DTR signals and TD signals as the control signals
concerned.
(1) DTR signals (See the page 7.2 (2))
(2) TXD signals (See the page 7.2 (3))
6.6 Electrical Characteristics
(1) RS-232C Circuit
Input (RXD, DSR)
<Printer side> <Host side>
Output (DTR, TXD)
<Printer side> <Host side>
E
q
uivalent MAX232
E
q
uivalent MAX232

BD2-2890DD SPECIFICATIONS
12
7. ERROR HANDLING
7.1 Peripheral Circuit Errors
These errors are detected at power-on or initialization just after a reset.
(1) Error types
(2) External signal outputs
(3) Resetting methods
Memory error
Error Description
The CPU made a self-diagnosis of the circuit and detected an error with the external
RAM.
20
22
Pin No
ERROR
DTR
Signal Name
LED output. For a blinking pattern, see 8.3 Error Indication.
Serial interface
Remarks
Memory error
Error
Unrecoverable
Resetting Method

BD2-2890DD SPECIFICATIONS
13
7.2 Operation Errors
(1) Error types
Caution: The 8.5V upper-limit voltage for VP voltage error is only an assumptive voltage just
after charging the battery when using the battery power. It cannot be normally used. A
normal maximum voltage is 7.2V.
(2) External signal outputs
(3) Resetting methods
Caution:
The 8.5V upper-limit voltage for VP voltage error is only an assumptive voltage just
after charging the battery when using the battery power. It cannot be normally used. A
normal maximum voltage is 7.2V.
No paper
Head –up
VP voltage error
Head temperature
error
Error
Set the paper. See Note 1.
Bring down the head-up lever.
Set to a voltage within the allowable range (4.2 to 8.5V) and turn on the power
again.
At the lower limit (less than 0 ˚C), printing becomes operational at 0 ˚C higher.
At the upper limit (65 ˚C or higher), it become operational at 60 ˚C or lower.
Resetting Method
No paper
Head –up
VH voltage error
Head temperature error
Error
The printing paper set is not set
The head-up lever is at its up position
A VH voltage is beyond its allowable range (4.2 to 8.5V)
A head temperature is less than 0˚C or 65 ˚C or higher.
Description
B
Pin No
DTR
Signal Name
Serial interface
Remarks

BD2-2890DD SPECIFICATIONS
14
8. PRINTER MECHANISM CONTROL SYSTEM
8.1 Thermal Head Control System (Division Driving System)
The MLT-289 (Line thermal printer) is driven by this control board has a384 dots/line head
divided into 6 blocks of 64 dots each. When actually driving the head, you can select either
Fixed Division Number system, which drives the head, always dividing it into 6 blocks or
Variable Division Number system which collectively drives several blocks at the time according
to the number of activated head dots.
For selection by function selection, see 4. DIP SWITCH SETTING.
For selection by a command, see 11. PRINT CONTROL FUNCTIONS.
8.1.1 Fixed Division Number System
This system always drives each block in the same sequence.
Note: for a stepping motor driving method, see 9.2 Motor Drive.
8.1.2 Variable Division Number System
This system counts the number of printing dots for each block of the printing dot line and drives
the blocks collective in such a manner not to exceed the maximum number of driving dots (64
dots).
1st Block
64 Dots
2nd Block
64 Dots
3rd Block
64 Dots 4th Block
64 Dots
5th Block
64 Dots
6th Block
64 Dots
1st Step of Motor
2nd Step of Motor
1 Dot Line
1st Block
64 Dots
2nd Block
64 Dots
3rd Block
64 Dots
4th Block
64 Dots
5th Block
64 Dots
6th Block
64 Dots
1 Dot Line
1st Step of Motor of Motor
2nd Step

BD2-2890DD SPECIFICATIONS
15
8.2 Motor Drive
The MLT-289 uses a 4-phase bipolar stepping motor. It feeds the 1 dot line worth of paper in
two steps by 2-to-2 phase excitation.
8.2.1 Motor Drive Features
1) Drive at an optimum drive speed by the VP voltage.
2) Prevents heat generation of the motor by PWM control to restrain current consumption.
3) Provides acceleration control at the time of start.
8.2.2 Maximum Motor Drive Speeds at Major Voltage
Caution: The maximum drive speed depends on the VH voltage.
A printing speed may slightly differ depending on a processing time or voltage
detection accuracy. During the course of printing, a motor drive speed may be slower
than the maximum drive speed, depending on what is printed or the head divided drive
system.
5V
6V
7.2V
VH Voltage
400pps
600pps
840pps
Motor Drive Speed

BD2-2890DD SPECIFICATIONS
16
9. PRINT CONTROL FUNCTIONS
9.1 Command List
Print Control Commands
Print Character Commands
Print Position Commands
Line Feed Span Commands
LF
CR
ESC J
ESC d
0Ah
0Dh
1Bh4Ah n
1Bh64h n
19
20
21
22
Control Code
Printing and paper feed
Print command
Printing and feeding paper n/203 inch
Printing and feeding the paper by n lines
Function Code Page
HT
ESC $
ESC D
ESC
ESC a
09h
1Bh24Ah n1 n2
1Bh44[n]k 00h
1Bh 5C n1 n2
1Bh 61h n
Control Code
Horizontal tab command
Specifying the absolute positions
Setting horizontal tab position
Specifying the relative positions
Aligning the characters
Function Code
36
37
38
39
40
Page
/
ESC 2
ESC 3
1Bh 32h
1Bh 33h n
Control Code
Specifying 1/6-inch line feed rate
Setting line feed rate of minimum pitch
Function Code
41
42
Page
ESC SP
ESC !
ESC %
ESC &
ESC –
ESC E
ESC G
ESC R
ESC V
ESC t
ESC {
1Bh20h n
1Bh21h n
1Bh25h n
1Bh26h s n m
[ap1...ps×a]m–n+1
1Bh2Dh n
1Bh45h n
1Bh47h n
1Bh52h n
1Bh56h n
1Bh74h n
1Bh7Bh n
Control Code
Setting the right space amount of the character
Collective specifying printing mode
Specifying/canceling douwnload character set
Defining download characters
Specifying/canceling underline
Specifying/canceling highlighting
Specifying/canceling double printing
Selecting the international character set
Specifying/Canceling 90°-right- turned Characters
Selecting the character code table
Specifying/canceling the inverted characters
Function Code
23
24
26
27
29
30
31
32
33
34
35
Page