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Document Reference No.: FT_000148
USB-COM232-PLUS4 Datasheet
Version 1.2
Clearance No.: FTDI# 97
2
Installation
2.1 Example Applications and Configurations
2.1.1 Wiring
Insert the A-plug into an available USB Host or Hub port. Insert the miniB-plug into the miniB-receptacle
on the USB-COM232-PLUS4.
RS232 cables have followed a standard 9-pin configuration on a D-sub connector since the mid 1980s.
The USB-COM232-PLUS4 follows this standard as a Data Terminal Equipment (DTE) device. If the RS232
equipment being connected is a Data Communication Equipment (DCE) device, it’s typical that a straight -
through cable can be used.
DTE Pin Number
1
2
3
4
5
6
7
8
9
Signal Name
DCD = Data Carrier Detect
RXD = Receive Data
TXD = Transmit Data
DTR = Data Terminal Ready
GND = RS232 signal ground
DSR = Data Set Ready
RTS = Request To Send
CTS = Clear To Send
RI – Ring Indicator
DCE Pin Number
1
2
3
4
5
6
7
8
9
Table 2.1 – RS232 DTE to DCE connection with straight-through cable
If the USB-COM232-PLUS4 is connected to another DTE device, a serial “null - modem” cable is required. A
null-modem cable handles connecting output signals to the corresponding input signals on the other end.
Table 2.3 shows a typical null-modem cable. Note that RI and DCD are not always used.
DTE Pin Number
2
3
4
5
6
7
8
Signal Name
RXD = Receive Data
TXD = Transmit Data
DTR = Data Terminal Ready
GND = RS232 signal ground
DSR = Data Set Ready
RTS = Request To Send
CTS = Clear To Send
DTE Pin Number
3
2
6
5
4
8
7
Table 2.2 – RS232 DTE to DTE connection with null-modem cable
Some serial devices may require certain handshake signals be connected. Refer to your device manual
for cabling details.
Copyright ? 2010 Future Technology Devices International Limited
6
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相关代理商/技术参数
USB-COM232-PLUS-4 制造商:Future Technology Devices International (FTDI Chip) 功能描述:COMMUNICATION DEVICES PROVIDE A SIMPLE METHOD OF ADAPTING FOUR LEGACY RS232 SERIAL DEVICES TO A MODERN USB PORT. 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE DEV USB-RS232 4 COM PORT 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MOD, USB HS TO RS232, 4 CH, FT4232H 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE, USB HS TO RS232 CONV, 4 COM PORT, FT4232H; ;ROHS COMPLIANT: YES
USB-COM-2SM 制造商:ADL 制造商全称:ADL 功能描述:Enclosure and multifunction module
USB-COM422-PLUS1 功能描述:界面模块 USB to RS422 Convrtr Assembly 1 DB9 Port RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度:
USB-COM422-PLUS-1 制造商:Future Technology Devices International (FTDI Chip) 功能描述:COMMUNICATION DEVICES PROVIDE A SIMPLE METHOD OF ADAPTING LEGACY SERIAL DEVICES WITH RS422 INTERFACES TO MODERN USB PORTS 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE DEV USB-RS422 1 COM PORT 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MOD, USB FS TO RS422, 1 PORT, FT232R 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE, USB FS TO RS422 CONV, 1 COM PORT, FT232R; ;ROHS COMPLIANT: YES
USB-COM422-PLUS2 功能描述:界面模块 USB HS to RS422 Conv Assembly 2 DB9 Ports RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度:
USB-COM422-PLUS-2 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB TO A DUAL INTERFACE RS422 LEVEL SERIAL UART ADAPTOR 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE DEV USB-RS422 2 COM PORT 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MOD, USB HS TO RS422, 2 CH, FT2232H 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE, USB HS TO RS422 CONV, 2 COM PORT, FT2232H; ;ROHS COMPLIANT: YES
USB-COM422-PLUS4 功能描述:界面模块 USB HS to RS422 Conv Assembly 4 DB9 Ports RoHS:否 制造商:4D Systems 产品:Serial Converters 通道/端口数量: 数据速率: 接口类型:USB, UART 工作电源电压:3.3 V, 5 V 最大工作温度:
USB-COM422-PLUS-4 制造商:Future Technology Devices International (FTDI Chip) 功能描述:USB TO A QUAD INTERFACE RS422 LEVEL SERIAL UART ADAPTOR 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE DEV USB-RS422 4 COM PORT 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MOD, USB HS TO RS422, 4 CH, FT4232H 制造商:Future Technology Devices International (FTDI Chip) 功能描述:MODULE, USB HS TO RS422 CONV, 4 COM PORT, FT4232H; ;ROHS COMPLIANT: YES