When The Letters Are Us - Epson U220B - TM Two-color Dot-matrix Printer Technical Reference Manual

3.4.2.2 When the letters are US

Serial model
(DIP Switch 1)
SW Function
1 Printing mode
2 Receive buffer
capacity
3 Handshaking
4 Word length
5 Parity check
6 Parity selection
7 Transmission speed
8 BUSY condition
Note:
When the printer has a data receive error, the printer prints "?."
Usually DIP switch 1-1 should be turned off. The right side up printing mode is a mode used for a printer
that is hanging on a wall. For detail, see "What is "Right side up printing" ?" (page 5-10). Regardless of
the setting of DIP switch 1-1, if you want to perform right side up printing, DIP switch 1-2 must be fixed
to off.
Parallel / USB / Ethernet model (Except serial)
(DIP Switch 1)
SW Function
1 Printing mode
2 Receive buffer
capacity
3 Reserved
4~7 Reserved
8 BUSY condition
Rev. D
On Off
Right side up Normal
printing printing
mode mode
40 bytes 4 KB
XON/XOFF DTR/DSR
7 bits 8 bits
Yes No
Even Odd
4800 bps 9600 bps
Receive Receive
buffer full buffer full or
Offline
On Off
Right side up Normal
printing printing
mode mode
40 bytes 4 KB
- Fixed to Off
- Fixed to Off
Receive Receive
buffer full buffer full
or Offline
TM-U220 Technical Reference Guide
(DIP Switch 2)
SW Function
1 Print column
2 Reserved
(Auto cutter enable/
disable)
3 Pin 6 reset signal
4 Pin 25 reset signal
5 Reserved
6 Reserved
7 Reserved
8 Serial interface
selection
(DIP Switch 2)
SW Function
1 Print column selection 42/35
2 Reserved
(Auto cutter enable/
disable)
3 Reserved
4 Pin 31 reset signal
5~8 Reserved
On Off
42/35 40/33
Type A, B Type D
Fixed to On Fixed to Off
Used Not used
Used Not used
- Fixed to Off
- Fixed to Off
- Fixed to Off
Memory DIP switch
switch
On Off
40/33
Type A, B Type D
Fixed to On Fixed to Off
- Fixed to Off
Used Not used
- Fixed to Off
Setup 3-17