Rev. D Setup 3-15
TM-U220 Technical Reference Guide
3.4.2 Adjusting the DIP Switches
The printer has two sets of DIP switches. The function of the DIP switches is different for each
interface model.
If you need to change settings, follow the steps below to make your changes:
CAUTION:
Turn off the power while removing the DIP switch cover to prevent an electric short,
which can damage the printer.
Use a crosshead screwdriver to remove the screw holding the DIP switch cover.
Note:
The functions of the switches are shown in the following sections.
The DIP switch function of US is little different from the STD.
3.4.2.1 When the letters are STD
Serial model
(DIP Switch 1) (DIP Switch 2)
SW Function On Off SW Function On Off
1 Data receive error Ignored Prints “?” 1 Print column 42/35 40/33
2 Receive buffer
capacity
40 bytes 4 KB 2 Reserved
(Auto cutter enable/
disable)
Type A, B
Fixed to On
Type D
Fixed to Off
3 Handshaking XON/XOFF DTR/DSR 3 Reserved - Fixed to Off
4 Word length 7 bits 8 bits 4 Serial interface
selection
Memory
switch
DIP switch
5 Parity check Yes No 5 Reserved - Fixed to Off
6 Parity selection Even Odd 6 Reserved - Fixed to Off
7 Transmission speed 4800 bps 9600 bps 7 Pin 6 reset signal Used Not used
8 BUSY condition Receive
buffer full
Receive
buffer full or
Offline
8 Pin 25 reset signal Used Not used
Look at the numbers and letters in the area
indicated in the illustration. If the last
letters are “US”, use the “US” tables below.
If the last letters are “STD”, use the “STD”
tables.
CAUTION:
Be sure to put back the DIP switch
cover before using the printer.
ON
OFF
ON
OFF