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(14) Input/Output Signals
(15) Connector Pin Assignment and Signal Description
Pin No.
Signal
Name
Function Signal
Direction
1 FG
z
Ground line for circuit protection
2 RD
z
Line for data which the printer receives from the host.
z
Logic 1 is a Low level, while logic 0 is a High level.
z
It is in the Low (Mark) state when no transmission is in
progress.
←
Host
3 TD
z
Line for data which the printer sends to the host.
z
Logic 1 is a Low level, while logic 0 is a High level.
z
It is in the Low (Mark) state when no transmission is in
progress.
Printer
→
4 CTS
z
It is an input signal indicating whether or not the data
transmission to the host is possible. However, this
printer does not detect this signal.
←
Host
5 RTS
z
Output signal to the host.
For the READY/BUSY (RTS) protocol:
z
It indicates the ready state for the received data.
z
It is at “Low” when the receive buffer is nearly full, and at
“High” when nearly empty.
For protocol other than the READY/BUSY (RTS) protocol:
z
After the power is turned on, it is always at “High” level.
Printer
→
6 DTR
z
Output signal to the host.
For the READY/BUSY (DTR) protocol or XON/XOFF
(DC1/DC3) pr READY/BUSY (DTR) protocol:
z
It indicates the ready state for the received data.
z
It is at “Low” level when the receive buffer is near full, and
at “High” level when near empty.
For the XON/XOFF (DC1/DC3) protocol or READY/BUSY
(RTS) protocol:
z
After the power is turned on, it is always at “High”.
Printer
→
7 SG
z
Ground line for all data and control signals.
20 DSR
z
Input signal from the host.
z
For the printer to receive data, it must be at “High” level.
←
Host
Printer
Host
FG
TD
RD
RTS
CTS
DSR
SG
DTR
Summary of Contents for B-SX4T Series
Page 89: ... 85 F Price font 2 POP font G Price font 3 POP font H DUTCH801 Bold Times Roman Proportional ...
Page 325: ... 321 2 GB18030 code tables TBD ...
Page 326: ... 322 TBD ...
Page 327: ... 323 TBD ...
Page 328: ... 324 TBD ...
Page 329: ... 325 12 9 TrueType FONT 1 PC 850 2 PC 8 ...
Page 330: ... 326 3 PC 852 4 PC 857 ...
Page 331: ... 327 5 PC 851 6 PC 855 ...
Page 332: ... 328 7 PC 1250 8 PC 1251 ...
Page 333: ... 329 9 PC 1252 10 PC 1253 ...
Page 334: ... 330 11 PC 1254 12 PC 1257 ...