Sollae Systems CSE-H21, Руководство пользователя

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CSE-H21 User’s Manual Ver. 1.2
Sollae Systems Co., Ltd.
- 9 -
http://www.sollae.co.kr
1.5 Interface
1.5.1 RS232 Port (DB9M)
There are two RS232 ports. The ports are interfaced with 9 pin D-sub male connectors. The
serial ports are isolated electrically.
Figure 1-2 9 pin D-sub male connector

RS232 ports
Table 1-2 RS232 Port Specification
Number Name Description level Dir. Etc.
1 DCD Data Carrier Detect RS232 Input optional
2 RXD Receive Data RS232 Input mandatory
3 TXD Transmit Data RS232 Output mandatory
4 DTR Data Terminal Ready RS232 Output optional
5 GND Ground Ground - mandatory
6 DSR Data Set Ready RS232 Input optional
7 RTS Request To Send RS232 Output optional
8 CTS Clear To Send RS232 Input optional
9 RI Ring Indicator RS232 Input optional

Data bits, Parity, Stop bit
Table 1-3 RS232 Parameters
Items Parameters
Data bit 8, 7, 6, 5
Parity None, Even, Odd, Mark, Space
Stop bit 1, 1.5, 2

Flow Control
CSE-H21 has RTS/CTS flow-control function.