USB-COM485-PLUS1 FTDI, USB-COM485-PLUS1 Datasheet
USB-COM485-PLUS1
Specifications of USB-COM485-PLUS1
Related parts for USB-COM485-PLUS1
USB-COM485-PLUS1 Summary of contents
Page 1
... Future Technology Devices International Ltd USB-COM485-PLUS1 Document Reference No.: FT_000132 Future Technology Devices International Ltd (FTDI) Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH, United Kingdom Tel.: +44 (0) 141 429 2777 E-Mail (Support): support1@ftdichip.com Web: http://www.ftdichip.com Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced in any material or electronic form without the prior written consent of the copyright holder ...
Page 2
... Pin 9 of the DE-9P connector can provide + 250mA. The USB-COM485-Plus1 module requires USB device drivers, available free from www.ftdichip.com, which are used to make the USB-COM485-Plus1 appear as a Virtual COM Port (VCP). This allows existing serial communications software, such as HyperTerminal, to exchange data through the USB-COM485-Plus1 to a legacy RS485 peripheral device. Copyright © ...
Page 3
... LED Description The USB-COM485-Plus1 uses three LEDs to indicate a valid link as well as data traffic according to the following table: LED Color Function Yellow Enumerated TxD Activity Green RxD Activity Red Table 1.1 LED Description 1.3 Block Diagram USB B FTDI FT232R Client USB Serial Bridge Connector Figure 1 ...
Page 4
... Table 1.2 Performance Figures Part Number Description USB-COM485-Plus1 USB-COM-Plus Full-Speed USB to 1-Port RS485 module Table 1.3 Ordering Information Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Configuring FT232R, FT2232 and FT232BM Baud Version 1.21 Clearance No.: FTDI ...
Page 5
... Environmental Approvals & Declarations ...................................... 16 7.1 EMI Compatibility ........................................................................................ 16 7.2 Safety.......................................................................................................... 16 7.3 Environmental ............................................................................................. 16 7.4 Reliability .................................................................................................... 16 7.4.1 MTTF ..................................................................................................... 16 7.5 Import / Export Information ....................................................................... 17 8 Troubleshooting ........................................................................... 18 8.1 Hardware .................................................................................................... 18 8.2 Device Driver .............................................................................................. 18 Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI ...
Page 6
... Technical Support ....................................................................................... 18 9 Contact Information ..................................................................... 20 Appendix A - List of Figures and tables .............................................. 22 Appendix B - Revision History ............................................................ 23 Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI ...
Page 7
... N/A 8 N/A 9 PWR = +5V DC output Table 2.1 RS485 DTE to DCE connection Figure 2.1 USB-COM485-PLUS1 Termination resistor Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 Expected Connect Signal DATA- Pin 2 of 120R Terminating Resistor. Only Required if the USB- COM485-PLUS1 is the first or last device in a multi-drop RS485 System, to meet RS485 Termination Requirements ...
Page 8
... Installation Executable shown on Windows XP 1) Login to your system as Administrator user with Administrator rights. 2) Prior to connecting the USB-COM485-Plus1 to the USB Host or Hub port, download the latest device driver version from the FTDIChip web site. 3) Run this executable to install the device drivers. ...
Page 9
... Figure 2.6 Hardware Ready COM Port Assignment Next, to determine which COM port has been assigned, open the Windows Device Manager from the System Control Panel. Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI ...
Page 10
... Figure 2.7 Device Manager Click on the Plus “+” sign next to the Ports tree to list the available COM port. You will see “USB Serial Port”, followed by a COMn assignment. In the figure below, the USB-COM485-Plus1 is assigned to COM3. Figure 2.8 COM Port Assignment Use this COM port number with your application software in order to access the USB-COM485-Plus1 ...
Page 11
... The ability to enable or disable local echo on the RS485 data is controlled by the setting in the FT232R EEPROM. A free utility is provided to change the configuration. The default is for local echo to be disabled. Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI ...
Page 12
... The RS485 port is configured as Data Terminal Equipment (DTE), with a 9-contact D-Sub Pin connector. Pin assignments are according to TIA/EIA-485. In addition, pin9 of DE-9P may be assigned to provide +5VDC to an external device with a maximum current draw of 250mA once the USB-COM485-Plus1 has been enumerated by the system. ...
Page 13
... Minimum Typical Maximum -7 +12 1.0 -0.8 +0.2 -0 1.5 ±15 ±8 ±15 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI# 95 Units Conditions *Present when USB cable is attached and V USB Host or Hub powered. ***Does not include power supplied to mA external device connected to pin 9 Units Conditions ...
Page 14
... Power Output The USB-COM485-Plus1 assign pin9 of DE-9P to provide +5V DC for an external device that requires power. The maximum allowable current is 500mA, including the circuitry of the USB-COM485-Plus1 itself 250mA may be used by the external device. ...
Page 15
... Mechanical Details 5.1 Module Mechanical Dimensions Figure 5.1 USB-COM485-Plus1 PCB Dimensions Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI ...
Page 16
... Operating Temperature T Range Table 6.2 Operating Temperature Copyright © 2010 Future Technology Devices International Limited Minimum Typical Maximum -65 +150 Minimum Typical Maximum –40 +85 Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI# 95 Units Conditions o C Units Conditions 5% to 95% RH non condensing 15 ...
Page 17
... EMI Compatibility FCC and CE The USB-COM485-Plus1 has been tested to be compliant with both FCC Part 15 Subpart B and European EMC Directive. NOTE: This is a Class B product domestic environment, this product may cause radio interference, in which case the user may be required to take adequate measures. ...
Page 18
... Country of Origin China TBD Harmonized Code Product Description USB to RS485 Development Module, Single Port USA ECCN EAR99 – No License Required Table 7.1 Import / Export Information Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI ...
Page 19
... If the higher COM port assignments are not acceptable for the application, known unused COM port numbers should be uninstalled according to the FTDI installation guide: http://ftdichip.com/Documents/InstallGuides.htm. 8.3 Technical Support Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet http://ftdichip.com/Documents/InstallGuides.htm Version 1.21 Clearance No.: FTDI ...
Page 20
... Technical support may be obtained from your nearest FTDIChip office: United Kingdom: United States: China: Taiwan Copyright © 2010 Future Technology Devices International Limited support1@ftdichip.com us.support@ftdichip.com cn.support@ftdichip.com tw.support1@ftdichip.com Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI ...
Page 21
... USA Tel: +1 (503) 547 0988 Fax: +1 (503) 547 0987 E-Mail (Sales) us.sales@ftdichip.com E-Mail (Support) us.support@ftdichip.com E-mail (General Enquiries) us.admin@ftdichip.com Web Site URL http://www.ftdichip.com Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI ...
Page 22
... Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow G41 1HH United Kingdom. Scotland Registered Number: SC136640 Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI ...
Page 23
... Table 3.1 USB "B" Receptacle Pin-Out ........................................................................................................ 11 Table 3.2 DE-9P RS485 Pin-Out .................................................................................................................... 11 Table 4.1 USB Electrical Details ................................................................................................................... 12 Table 4.2 RS485 Electrical Details ............................................................................................................... 12 Table 4.3 Power Output for USB-COM485-Plus1 ........................................................................................ 13 Table 6.1 Storage Temperature .................................................................................................................... 15 Table 6.2 Operating Temperature ................................................................................................................ 15 Table 7.1 Import / Export Information .......................................................................................................... 17 Copyright © 2010 Future Technology Devices International Limited Document Reference No ...
Page 24
... Edited Section 1.3.1, Removed the statement “A standard “A to B” cable is provided” Version 1.21 Edited table 1.2, RS485 cable length Copyright © 2010 Future Technology Devices International Limited Document Reference No.: FT_000132 USB-COM485-PLUS1 Datasheet Version 1.21 Clearance No.: FTDI March 2009 18 March 2009 04 June 2009 ...