Db25 female rta connector pinout – Perle Systems RIO 5500036-17 User Manual
Page 203
RIO Remote I/O System User Guide
RTA connector pinouts
Page 203
Chapter 3 RIO Cabling information
DB25 female RTA connector pinout
Pin
Signal
Direction
Description
1
Chassis
Chassis ground
2
TXD
In
Transmit Data
3
RXD
Out
Receive Data
4
RTS
In
Request To Send
5
CTS
Out
Clear To Send
6
DSR
Out
Data Set Ready
7
GND
Ground
8
DCD
In
Data Carrier Detect
20
DTR
In
Data Terminal Ready
22
RI
In
Ring Indicator
Pin 1 (looking into connector)