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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Setting DIP Switches
NOTE:
Be careful when changing the DIP switch settings. Carefully use a pointer on the DIP switch you are
going to change. DO NOT use a screw driver or apply excessive force.
DIP Switch Functions
DIP
Switch
Function
Switch
Switch
Switch
Switch
Notes
1,2,3,6
Communication Interface
SW1
SW2
SW3
SW6
RS232
Off
Off
Off
Also set 4 & 5
IrDA
On
On
Off
Also set 4 & 5
Bluetooth
Off
On
On
38,400 Baud
IR Direct Mode
On
On
Off
On
9600 Baud
4 & 5
COM 1 & 2 - Baud Rate
SW4
SW5
RS232 Rate
38, 400
Off
Off
Bluetooth
19, 200
Off
On
9600
On
Off
2400
On
On
4 & 5
COM 2 – IrDA Baud Rate
SW4
SW5
IrDA Baud Rate
9600
Off
Off
Fixed
9600 - 38.4 Baud
On
Off
Variable
6 & 7
COM 1 & 2 - Parity Bits
SW6
SW7
No parity
Off
Off
Odd parity
On
Off
Even parity
On
On
8
Auto Power Save
SW8
Power save disabled
Off
Manual On/Off
Power save enabled
On
Auto Power Down
NOTE:
In order for changes to the DIP Switch configuration to take effect, the printer’s power must be reset.
Communication
• The MP300 has two serial communication UARTs. It is able to support two modes
of communication simultaneously – either RS232 and IrDA (If DIP switch 1 is on)
or RS232 and Bluetooth (If DIP switch 1 is off and DIP switch 3 is on).
•
DIP switch 2 is used to control the RS232 port. If the switch is turned on the
RS232 Port is disabled and if it is turned off the RS232 Port is enabled. If RS232
interface is not required, disabling the port will save battery power.
• Bluetooth communication is available if optional daughter boards are
installed.
Serial Communication Specification
• The RS232 interface signals for the MP300 printers are terminated on a
6-pin RJ type data connector located on the side of the printer.
• Six connections are provided from the serial interface to the host computer. The
serial interface signals and pin outs on the RJ connector, and the connector
pin locations are shown below.
• A minimum of two connections are required for operation: RXD – pin 3 and Common
– pin 1.
The communication parameters: baud rate, data bit and parity must be set the same
as the host device settings.
RJ45 Connector Pin #
Communication Interface
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
!
!