Parallel Port Loop-Back Connector Pin Assignments; Serial Port Loop-Back Connector Pin Assignments - Epson Apex 20020, 20040 User Manual

Parallel Port Loop-back Connector Pin Assignments

Output signal name
Strobe
Data bit 0
Auto feed
Init. printer
Select input

Serial Port Loop-back Connector Pin Assignments

Output signal name
Transmit data
Data terminal ready
Request to send
Pin no. Pin no.
1 — 13
2 — 15
14 — 12
16 — 10
17 — 11
Pin no.
Pin no.
3 — 2
1
4 — 6
9
7 — 8
Input signal name
Select
Error
P.END (out of paper)
Acknowledge
Busy
Input signal name
Receive data
Data carrier detect
Data set ready
Ring indicator
Clear to send
Specifications A-9