CIE-H14 User Manual Ver. 1.1
- 14 -
http://www.ezTCP.com
1.6.4
RS232 Port (DB9M)
CIE-H14 has an RS232 port supporting from 300 bps to 230,400 bps. This port is for
connecting users’ serial devices to Ethernet (TCP/IP) including the “Serialized Modbus/TCP”.
Figure 1-10 D-sub Male Connector
Pin Assignment
No. name
description
level
Dir.
Etc.
1
DCD
Data Carrier Detect
RS232
Input
NC
2
RXD
Receive Data
RS232
Input required
3
TXD
Transmit Data
RS232 Output required
4
DTR Data Terminal Ready RS232 Output option
5
GND
Ground
Ground
-
required
6
DSR
Data Set Ready
RS232
Input
option
7
RTS
Request To Send
RS232 Output option
8
CTS
Clear To Send
RS232
Input
option
9
RI
Ring Indicator
RS232
Input
NC
Table 1-6 pin assignment of the RS232 port
NC: Not Connected
Serial port parameters
Parameter
available values
Number
1
Type
RS232
Baudrate
300 ~ 230,400 [bps]
Parity
NONE / EVEN / ODD / MARK / SPACE
Data bit
8/7/6/5
Stop bit
1/1.5/2
Flow control
NONE, RTS/CTS, DTR/DSR
Table 1-7 Serial port parameters