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Signal
Pin
Return
Pin Signal Direction Description
32 29
DataAvail/
DataBit - 0, 4
OUT Data available sugnal
and reverse channel
transfer data bit 0 or 4.
33 - GND - Same as for Pins 19-30
34 - NC - Not used
35 - +5 V OUT Pulled up to +5 V through
3.3 KΩ resistance.
36 30 1284-Active IN 1284 active signal.
Note:
The column heading “Direction” refers to the direction of signal flow as
viewed from the printer.
Serial interface
The printer’s built-in serial interface is based on the RS-423 standard. This
interface has the following characteristics:
Standard: Based on RS-423
Synchronization: Synchronous
Bit rate: Max. 1.8 Mbps.
Handshaking: X-ON/X-OFF, DTR protocol
Word format:
Data bit 8 bits
Parity bit None
Start bit 1 bit
Stop bit 1 bit
Connector: 8-pin mini-circular connector
Recommended cable: Apple System Peripheral-8 cable
(Part number M0197)
C
R
Loire2 Ref. Guide
Rev.c
A5 size Appendix C
11-11-96 DR, pass 0
Specifications
C-19