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
D-sub 25-pin connector
In this table, the direction of signals is given relative
to
the printer.
Pin
Signal
number
Signal
direction
Direction
2
TXD
out
Transmits data for X-on/X-off
20
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
11
REV
out
Same as DTR
(=2nd RTS)
7
SG
-----
Signal (logic) ground level
1
CG
-----
Printer chassis ground
Technical Specifications
8-15
Содержание LQ-860 - Impact Printer
Страница 1: ...User s Manual EPSON 4 0 0 8 1 2 3 6 0 1 0 3 ...
Страница 2: ...E P S O N L Q 8 6 0 User s Manual ...
Страница 157: ...3 Push the paper release lever all the way back to the single sheet position 5 20 Using the Printer Options ...
Страница 190: ...Chapter 6 Maintenance Cleaning the Printer 6 2 Replacing the Ribbon 6 4 Transporting the Printer 6 9 Maintenance 6 l ...
Страница 197: ...8 Close the printer cover and the paper guide cover 6 8 Maintenance ...
Страница 299: ...Appendix Proportional Width Table A 2 Character Tables A 6 A l ...
Страница 305: ......
Страница 322: ......
Страница 324: ......
Страница 325: ...EPSON AMERICA INC 2780 Lomita Boulevard Torrance California 90505 EPSON Printed in Japan 90 09 4 ...