Serial Connection; Rs-232 Port Specifications And Wiring; Serial Port Specification For Rs-232 Of Etos-Xp Series - AC&T System ETOS-XP Series User Manual

3.4. Serial Connection

ETOS-100XP / 150XP provides up to 4 serial ports, and ETOS-500XP provides up to 20 serial ports.
They are located on the front side of the product as shown below.

3.4.1. RS-232 port Specifications and Wiring

The following table shows each pin name, function, and data direction of the RS-232 serial
port of the ETOS-XP series.

[Serial Port Specification for RS-232 of ETOS-XP Series]

1 8
RJ-45
Connector
Pin
Name Signal Direction
No.

1 CD
2 RXD 

3 TXD

4 DTR
5 SG

6 DSR

7 RTS
8 CTS 
- 27 -
Function Description
DCE notifies DTE of detected carrier
Receive data signals
Transmit data signals
DTE notifies DCE that DTE is ready for
communication
- SG - Ground wire for signaling
DCE notifies DTE that DCE is ready for
communication
DTE requests DCE for data transmission
DCE notifies DTE that data can be sent