User`s manual
Signal level
Mark (1) -3 V to -27 V
Space (0) +3 V to +27 V
Handshaking
Handshaking by DTR signal or X-on/X-off. The DTR signal changes
to mark-meaning the printer is not ready to receive data-when
the number of bytes free in the input buffer goes down to 256. The
signal changes to space-meaning that the printer is now ready-
when the number of bytes in the input buffer rises to 528.
Error handling
A * character is printed if a parity error is detected. All other errors
are ignored.
Connector
6-pin DIN connector
In this table, the direction of signals is given relative to the printer.
Pin
1
Sianal
1
dfbg,:fk
1
Direction
number
I
1
TXD out
Transmits data for X-on/X-off
2 DTR
out
Indicates whether or not the printer is
ready to receive data. “Mark” level
indicates printer is not ready to
receive data.
3
RXD
in
Receives data
4
Not
used
5
SG
-
Signal (logic) ground level
6
CG
-
Printer chassis ground
8-14
Technical Specifications