Optional Localtalk Interface - Epson ActionLaser 1600 EPL-5600 Service Manual

General Description

1.3.3 Optional LocalTalk Interface

This printer can use the optional LocalTalk interface module.
LocalTalk
Type:
Same as 179422 signal level
Signal level:
X-ON/X-OFF (cann ot be combined with DTR control)
Protocol:
230.4 K bps
Transfer speed:
See Table 1-11.
Signal description:
Table 1-11. LocalTalk Interface Pin Assignments
Pin No. Signal Name
1
2
3
4 GND
6
7 NC
8
1-18
Signal output by the printer. When the DTR signals HIGH, the
The printer transmits the data through TXD while CTS is
IN
HIGH.
Serial ASCII data output from the printer.
HIGH level; when SD+ voltage is higher than SD- voltage.
OUT LOW level; when SD+ voltage is less than SD- voltage.
Logic O is "SPACE" and logic 1 is "MARK" state must be
maintained between transmitted character codes.
Ground.
Serial ASCII data input from computer.
HIGH level; when RD+ voltage is higher than RD- voltage.
LOW level; when RD+ voltage is less than RD- voltage.
IN
Logic O is "SPACE" and logic 1 is "MARK" state must be
maintained between transmitted character codes.
OUT
Refer to TXD-.
No connect.
IN Refer to RXD-.
Description
Rev. A