Serial Port Pin Assignments - Epson 10020 User Manual

Serial Port Pin Assignments

Pin no.
1
2
3
4
5
6
7
8
9-19
20
21
22
23-25 NC
Note: The following current loop functions are not supported:
Pin 9:
+Transmit current loop data
Pin 11: -Transmit current loop data
Pin 18: +Receive current loop data
Pin 25: -Receive current loop data
B-8 Specifications
Signal name
NC
TX
RX
RTS
CTS
DSR
GND
DCD
NC
DTR
NC
RI
Direction Description
No connection
—
Transmitted data
O
I
Received data
Request to send
O
I Clear to send
I Data set ready
Signal ground
—
I Data carrier detect
No connection
—
O Data transmit ready
No connection
—
I Ring indicator
No connection
—