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USB to RS-485/RS-422

Interface Converter

User Manual

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Summary of Contents for UT-890A

Page 1: ...USB to RS 485 RS 422 Interface Converter User Manual ...

Page 2: ...unctions 3 III Hardware installment and application 3 IV Performance parameters 4 V Connector and signal 4 VI Communication Connection Chart 5 VII Problems and troubleshooting 6 VIII Product image 6 IX Driver installation 7 14 ...

Page 3: ...nds is suppressed and kept at a pre set value therefore no damage is caused to the electrical components behind by the transient high voltage impact The protector can effectively restrain lightning or ESD electro static discharge with a protection voltage of 600W on each line for lightning surge and surge voltage or transient over voltage possibly caused up by various reasons and at the same time ...

Page 4: ...ption of automatic data stream control for automatic recognition and control of data transmission direction Baud rate 300 921 6Kbps automatic detection of the transmission rate of the serial interface signal Workload ability point to multipoint supported a maximum of 32 RS 422 or RS 485 interface equipments are supported Transmission distance 1200 meters for RS 485 422 end when 9 600bps and a maxi...

Page 5: ...erface converter Put the signal cable of the equipment into the USB socket The product adopts the universal connector of USB DB 9 or RJ 45 for input and output interface with automatic mode shift RS 485 or RS 422 mode without jumper setting Either twisted pair cable or shielded cable is applicable for easy installation or un installation T R T R represents sending and receiving the A B RXD RXD rep...

Page 6: ... or interference when converter is used in full duplex or half duplex mode a proper matching resistance should be connected at the terminal of the line 120 1 4W V Communication Connection Chart USB to RS 422 conversion RS 422 point to point 4 line full duplex RS 422 point to point 4 line full duplex Full duplex connection between UT 890A interface converters ...

Page 7: ...USB to RS 485 conversion RS 485 point to point 2 line half duplex RS 485 point to multipoint 2 line half duplex Half duplex connection between UT 890A interface converters VI Connector and signal ...

Page 8: ... Data missing or incorrect A Check to see whether the data rate and format at both ends of the communication equipment are consistent VII Driver installation Once a UT 890A converter is connected with the USB port the following window will pop up Select Install from a list or specific location Advanced then click Next to continue Then a window pops up to choose search and installation options as t...

Page 9: ...s up for Hardware Type listing pull the scroll bar to select Universal Serial Bus Controllers and click Next to continue In the following Select the device driver you want to install for this hardware click Have Disk to ...

Page 10: ...continue In the Install From Disk window click Browse to select the path of the device driver In the Locate File window select CD path then choose the directory Driver and click the button ...

Page 11: ... Select the driver mode as the following thenclick the directory UT 890A to open Select the applicable operation system e g select and double click to open WINXP 2003 2000 for Windows XP Select the file FTDIBUS INF then click Open ...

Page 12: ...In the following Install From Disk window just click OK Installation information has been located by the system as the following just click Next to continue 861 ...

Page 13: ...e USB Serial Converter installation is finished then the system wizard will detect USB Serial Port automatically The following is the Found New Hardware Wizard for USB Serial Port click Next as for USB USBinstallation information ...

Page 14: ...omitted here Installation information has been located by the system as the following just click Next to continue The following shows the USB Serial Port installation is finished Up to now all the drivers for USB installation information ...

Page 15: ...n you can open Device Manager to check it there are COM ports available now if no USB drivers have been installed previously System default COM ports are COM 3 as illustrated below Now all the installation is finished System virtual COM port ...

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