Communication Cable (Rs-232C) - Epson RC90 Manual

Setup & Operation 13. Option Slots

13.4.5 Communication Cable (RS-232C)

Prepare a communication cable as described in this section.
NOTE Use twisted pair cable for shielded wire.

Clamp the shield to the hood for noise prevention.
Pin assign of the RS-232C connector is as follows.
78
Connector
Connector
RS-232C
(Controller side)
Pin No Signal
1 DCD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
D-sub 9 male pin
Mounting style #4 - 40
Function
Data carrier detect
Receive data
Send data
Terminal ready
Signal ground
Data set ready
Request to send
Clear to send
Ring indicator
RC90 (EPSON RC+ 7.0) Rev.8
Standard
Signal Direction
Input
Input
Output
Output
-
Input
Output
Input
Input