AC&T System ETOS-XP Series, Руководство пользователя

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