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Copyright 2008 Unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of Unitech Electronics Co., Ltd.
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Copyright 2008 Unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of Unitech Electronics Co., Ltd.
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RJ25 CONNECTOR PIN # FUNCTIONAL DESCRIPTION SIGNAL NAME
3 RS232 from Host (INPUT) RXD
2 RS232 from Printer (OUTPUT) TXD
6 Request to send from Host (INPUT) RTS
4 Clear to send from Printer(OUTPUT) CTS
1
5
Logic common COM
Table C.1 – Serial Interfaces Signals and pinouts
C.1.4 RS232C TECHNICAL SPECIFICATIONS
Technical Specication Name Technical Specication Value
Data Transfer Rate 2400 – 38.4K Baud
Word Length 10 or 11 bits
Start Bit 1
Data Bits 8
Parity Bit None, Odd or Even
Stop Bits Auto Select 1 or 2
Signal Levels RS232C
Mark or Logical 1 -3 to -15 VDC
Space or Logical 0 + 3 to + 15 VDC
Handshaking Two modes are supported(Software and Hardware)
Hardware RTS/CTS
Software XON/XOFF
Auto Power Up Positive Signal on RTS input turns printer on
Table C.2. – RS232C – Technical Specications
Figure 2.0
RJ-25 Data Connector
C.2.0 Infrared Communications (IrDA)
In IrDA mode the printer can be powered up by pressing the power <On/Off> switch.
If no IrDA connection is made, the printer will automatically power down to a lower
power level to conserve battery life. It will remain in a “sleep” mode until an IrDA
connection is made, at which time the printer will “wake” up and print the requested
data .Pressing the power switch again will turn the printer <OFF>. The printer can be
either in Set IrDA mode which is xed at 9600 bps baud rate or in Variable IrDA mode
where the baud rate is negotiated between the printer and the host device and can go
up to 38400 baud rate. It can also be in Direct IrDA mode which is described in detail
below. The following table shows the required printer settings for IrDA mode.
Switch # Function Switch Switch Switch NOTES:
1 & 5 Communication Interface SW1 SW5 SW7
RS232 Off Off SET SW 2,3,6 &7
RS232 and Bluetooth Off On Defaults to 38.4k Baud
IrDA Set to 9600 On Off Baud rate xed to 9600
IrDA Variable 9600-38.4K On On
Direct IR On Off On Defaults to 9600 Baud
Table C.3 – IrDA Mode
2.1 Direct IR
The Unitech MP200 printer also supports direct IrDA. When in that mode the printer
surpasses the IrDA stack. This mode is intended for host devices that only support the
physical layer of the IrDA communication. For the printer to be in direct IrDA mode you
need to have Dip Switch # 1 and Dip Switch # 7 in the ON position.
C.3.0 Bluetooth Communications (Option):
The MP200 Printer Supports a Bluetooth Option. The printer control card
communicates with the Bluetooth™ base band interface at 38.4K Baud/sec using no
parity. To select the Bluetooth™ interface Dip Switch # 5 has to be ON and all other
Dip Switches have to be OFF. To have continuous power on set DIP Switch 4 in ON
position. Refer to table C.0 for detailed explanation of the Dip Switch Settings.
To gain access to the dip switch, open the paper door and remove the paper roll. The
dip switch is located at the middle of the paper roll slot. Refer to the User’s Guide for
the proper location of the referenced dip switch settings
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