Serial Interface - Epson Stylus 1520 User Manual

Signal Return
Pin Pin
32 29
33 -
34 -
35 -
36 30
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:
Synchronization:
Bit rate:
Handshaking:
Word format:
Data bit
Parity bit
Start bit
Stop bit
Connector:
Recommended cable:
Signal Direction
DataAvail/ OUT
DataBit - 0, 4
GND
NC
+5 V OUT
1284-Active IN
Based on RS-423
Synchronous
Max. 1.8 Mbps.
X-ON/X-OFF, DTR protocol
8 bits
None
1 bit
1 bit
8-pin mini-circular connector
Apple System Peripheral-8 cable
(Part number M0197)
Description
Data available sugnal
and reverse channel
transfer data bit 0 or 4.
- Same as for Pins 19-30
- Not used
Pulled up to +5 V through
3.3 K resistance.
1284 active signal.
Specifications
C
C-19