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User’s Guide

OMG-USB-SER-4

Four Port RS-232/422/485 to USB Adaptor

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Содержание OMG-USB-SER-4

Страница 1: ...www omega com e mail info omega com User sGuide OMG USB SER 4 Four Port RS 232 422 485 to USB Adaptor Shop online at...

Страница 2: ...court France TEL 33 0 1 61 37 29 00 FAX 33 0 1 30 57 54 27 Toll Free in France 0800 466 342 e mail sales omega fr Germany Austria Daimlerstrasse 26 D 75392 Deckenpfronn Germany TEL 49 0 7056 9398 0 FA...

Страница 3: ...LES 6 SWITCH EXAMPLES CONTINUED 7 TECHNICAL DESCRIPTION 8 FEATURES 8 CONNECTOR PIN ASSIGNMENTS 8 RS 422 485 DB 9 Male 8 RS 232 DB 9 Male 8 SPECIFICATIONS 9 ENVIRONMENTAL SPECIFICATIONS 9 MANUFACTURING...

Страница 4: ...UNICATIONS COMMISSION STATEMENT 15 CANADIAN RADIO INTERFERENCE REGULATIONS 15 EMC DIRECTIVE STATEMENT 16 Figures Figure 1 Switches SW2 and SW4 5 Figure 2 RS422 485 Interface Configuration 6 Figure 3 E...

Страница 5: ...s that it does not require opening the computer case nor does it require resources such as I O ports or IRQ s It does require a system that supports USB both in terms of hardware and operating system...

Страница 6: ...ither at the PC host or an upstream hub The OMG USB SER 4 is hot pluggable meaning there is no need to power down your computer prior to installation Connect the OMG USB SER 4 to an upstream host or h...

Страница 7: ...You can access your new COM ports by using the assigned COM identifiers as shown above In this case it is COM3 4 5 and 6 However this assignment will vary from system to system At this point the hardw...

Страница 8: ...e box must be opened Do this by removing the four screws located on the bottom When reassembling please note that the top and bottom are keyed to fit in only one direction Electrical Interface Selecti...

Страница 9: ...o RX for two wire operation PU 485 option OFF for 422 OFF No effect ON Adds a 1 K ohm pull up resistor to RX PD 485 option OFF for 422 OFF No effect ON Adds a 1 K ohm pull down resistor to RX T 422 an...

Страница 10: ...tion OFF for 422 OFF The receiver is always enabled In a two wire setup the receiver will echo back all transmitted data ON The receiver is disabled when the transmitter is enabled In a two wire setup...

Страница 11: ...RS 422 with 120 ohmtermination The corresponding shunt is in the 422 485 position Switches 485 3 NE 3 and Port 2 L L PU and PD are all in the OFF position T is in the ON position Port 4 RS 485 two wir...

Страница 12: ...for USB Enabled and port activity Connector Pin Assignments RS 422 485 DB 9 Male Signal Name Pin Mode GND Ground 5 TX Transmit Data Positive 4 Output TX Transmit Data Negative 3 Output RTS Request To...

Страница 13: ...to UL 94V0 rating and are 100 electrically tested These printed circuit boards are solder mask over bare copper or solder mask over tin nickel Power Consumption This device is a high power USB device...

Страница 14: ...E will be lit This should allow you to use the WinSSD utility and the supplied loopback plug to check communications The supplied loopback plug connects TD to RD If you decide to test the Modem Contr...

Страница 15: ...a computer ready to run diagnostics 3 Omega Engineering maintains a home page on the Internet Our home page address is www omega com The latest software updates and newest manuals are available via o...

Страница 16: ...states The RS 232 and the EIA TIA 574 specification define two types of interface circuits Data Terminal Equipment DTE and Data Circuit Terminating Equipment DCE The OMG USB SER 4 is a DTE device RS...

Страница 17: ...and 32 receivers to be connected to one line This interface is ideal for multi drop or network environments RS 485 tri state driver not dual state will allow the electrical presence of the driver to b...

Страница 18: ...f a pre defined number of stop bits usually 1 1 5 or 2 An extra bit used for error detection is often appended before the stop bits Remain Idle or next start bit Odd Even or Unused STOP P BIT 5 to 8 D...

Страница 19: ...e separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV t...

Страница 20: ...022 Class B Limits and methods of measurement of radio interference characteristics of information technology equipment EN55024 Information technology equipment Immunity characteristics Limits and met...

Страница 21: ...shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential incidental or special damages CONDITIONS Equipment sold by OMEGA...

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