Siemens printer 9015 Manual

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230 Pages English

Siemens printer 9015
V.24/RS-232 C Interfaces
Programmer Reference Guide U26169-J-Z716-1-7600
© Siemens Nixdorf Informationssysteme AG 1995 Pfad: D:\SNI\Mackwitz\u26169\o26169e\26169e.k11
DTR protocol
The following signal lines are used:
The printer sets the DTR signal to ON (positive level) as soon as it is ready to receive data
after power-on.
The printer sets the DTR signal to OFF when less than 256 bytes are free in the buffer or
when the printer enters the Stop mode. Further data is stored until the printer buffer is
completely full; any additional data is lost.
The DTR signal returns to ON when the printer exits from the Stop mode and at least 512
bytes are free in the printer buffer.
Designation Explanation Direction
from/to printer
Pin EIA DIN CCITT
1
3
7
20
AA
BB
AB
CD
E1
D2
E2
S1.2
101
104
102
108.2
PG: Protective Ground
RXD: Receive Data
SG: Signal Ground
DTR: Data Terminal Ready x
x
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