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Omega Vehicle Security ISA RS-422 manual

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Table of contents for the manual

  • Page 1

    www .omega.com e-mail: info@omega.com U ser ’ s Guide OMG-UL TRA-SIO Dual Por t Isolated/Non-Isolated ISA RS-422/485 Adaptor Board Shop online at[...]

  • Page 2

    Servicing Nor th America: USA: One Omega Drive, P.O. Box 4047 ISO 9001 Certified Stamford CT 06907-0047 TEL: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com Canada: 976 Bergar Laval (Quebec) H7L 5A1, Canada TEL: (514) 856-6928 FAX: (514) 856-6886 e-mail: info@omega.ca For immediate technical or application assistance: USA and Canada: Sale[...]

  • Page 3

    Contents I NTRODUCTION ..........................................................................1 O VERVIEW ................................................................................................ 1 W HAT ’ S I NCLUDED ................................................................................ 1 F ACTORY D EFAULT S ETTINGS .........[...]

  • Page 4

    W HAT IS G ROUND L OOP ? ................................................................... 16 C ABLING R ECOMM ENDATIONS .......................................................... 16 A PPENDIX E - A SYNCHRONOUS C OMMUNICATIONS ................17 A PPENDIX F - S ILK - S CREEN .....................................................18 A PPENDIX G - C [...]

  • Page 5

    Introduction OMG - ULTRA - SIO Page 1 Introduction Overview The OMG - ULTRA - SIO provides the PC with two additional ground isolated RS - 422/485 (P/N 3189) or two non - isolated RS - 422/485 (P/N 3089) serial ports for terminals, modems, printers, etc. Isol ation is important in installations where the equipment being connected to the PC is eithe[...]

  • Page 6

    Card Setup OMG - ULTRA - SIO Page 2 Card Setup The OMG - ULTRA - SIO contains several jumper straps that must be set for proper operation. Address Selection Each port on the OMG - ULTRA - SIO occupies eight consecutive I/O locations. A DIP - switch is used to set the base addres s for these locations. SW1 sets the I/O address for port 1 and SW2 set[...]

  • Page 7

    Card Setup OMG - ULTRA - SIO Page 3 IRQ Selection Headers E11 and E12 select the interrupt request for each seria l port. If COM1: is selected, the corresponding jumper must be on the IRQ4 setting. If COM2: is selected, the corresponding jumper must be on IRQ3. Note : Most communications software applications default COM3: to IRQ4 and COM4: to IRQ3[...]

  • Page 8

    Card Setup OMG - ULTRA - SIO Page 4 Interrupt Modes Header E5 and E6 se lects the interrupt mode for each port. Each port must be set in the correct mode to insure proper operation. ‘ N ’ indicates the ( N )ormal, single interrupt per port mode. ‘ S ’ Indicates the ( S )hared interrupt mode, which allows more than one port to access a singl[...]

  • Page 9

    Card Setup OMG - ULTRA - SIO Page 5 Set the jumper to ‘ S ’ if you are using more than one OMG - ULTRA - SIO in a bus or to completely r emove the pull - down resistor for hardware compatibility. Setting the adapter in this configuration when it is not accompanied by a pull - down resistor will prevent the ports from triggering an interrupt . 1[...]

  • Page 10

    Card Setup OMG - ULTRA - SIO Page 6 Headers E8 (Port 1) and E10 (Port 2) are used to control the RS - 485 mode functions for the driver circuit. The two selections are ‘RTS’ enable or ‘Auto’ enable. The ‘Auto’ enable feature automatica lly enables/disables the RS - 485 interface. The ‘RTS’ mode uses the ‘RTS’ modem control signa[...]

  • Page 11

    Card Setup OMG - ULTRA - SIO Page 7 Interface Mode Examples RTS Auto E8 & E10 E3 & E9 Figure 6 - RS - 422 RTS Auto E8 & E10 E3 & E9 Figure 7 - RS - 485 ‘Auto’ Enabled, with ‘No Echo’ RTS Auto E8 & E10 E3 & E9 Figure 8 - RS - 485 ‘Auto’ Enabled, with ‘Echo’ RTS Auto E8 & E10 E3 & E9 Figure 9 - RS - 485[...]

  • Page 12

    Card Setup OMG - ULTRA - SIO Page 8 Line Termination Typically, each end of the RS - 485 bus must have line terminating resistor s (RS - 422 terminates at the receive end only). A 120 ohm resistor is across each RS - 530/422/485 input in addition to a 1K ohm pull - up/pull - down combination that bias the receiver inputs. Headers E1 and E4 allow th[...]

  • Page 13

    Installation OMG - ULTRA - SIO Page 9 Installation System Installation The OMG - ULTRA - SIO can be installed in any of the PC expansion slots. The OMG - ULTRA - SIO contains several jumper straps for each port which must be set for proper operation. 1. Turn off PC power. Disconnect t he power cord. 2. Remove the PC case cover. 3. Locate an availab[...]

  • Page 14

    Technical Description OMG - ULTRA - SIO Page 10 Technical Description The OMG - ULTRA - SIO provides the PC with two additional ground isolated RS - 422/485 (P/N 3189) or two non - isolated RS - 422/485 (P/N 3089) serial ports for terminals, modems, printers, etc. Isolation is import ant in installations where the equipment being connected to the P[...]

  • Page 15

    Specifications OMG - ULTRA - SIO Page 11 Specifications Environmental Specifications Specification Operating Storage Temperature Range 0º to 50º C (32º to 122º F) - 20º to 70º C (- 4º to 158º F) Humidity Range 10 to 90% R.H. Non - Condensing 10 to 90% R.H. Non - Condensing Manufacturing • All Printed Circuit boards are built to U. L. 94V0[...]

  • Page 16

    Appendix A - Troubleshooting OMG - ULTRA - SIO Page 12 Appendix A - Troubleshooting Serial Utility test software is supplied with the adapter and will be used in the troubleshooting procedures. By using this software and following these simple steps, most common problems can be eliminated without the need to call Technical Support. 1. Identify all [...]

  • Page 17

    Appendix A - Troubleshooting OMG - ULTRA - SIO Page 13 8. The following are known I/O conflicts: • The 278 and 378 settings may conflict with your printer I/O adapter. • 3B0 cannot be used if a Mon ochrome adapter is installed. • 3F8 - 3FF is typically reserved for COM1: • 2F8 - 2FF is typically reserved for COM2: • 3E8 - 3EF is typically[...]

  • Page 18

    Appendix B - How To Get Assistance OMG - ULTRA - SIO Page 14 Appendix B - How To Get Assistance Please refer to Troubleshoot ing Guide prior to calling Technical Support. 1. Begin by reading through the Trouble Shooting Guide in Appendix A. If assistance is still needed please see below. 2. When calling for technical assistance, please have your us[...]

  • Page 19

    Appendix C – Electrical Interface OMG - ULTRA - SIO Page 15 Appendix C - Electrical Interface RS - 422 The RS - 422 specific ation defines the electrical characteristics of balanced voltage digital interface circuits. RS - 422 is a differential interface that defines voltage levels and driver/receiver electrical specifications. On a differential [...]

  • Page 20

    Appendix D - Ground Loop Phenomenon OMG - ULTRA - SIO Page 16 Appendix D - Ground Loop Phenomenon What is Ground Loop? Ground loop Phenomenon occurs when two (or more) pieces of equipment are connected together with a common ground and a different ground poten tial exists at each location. This current can cause the connected equipment to experienc[...]

  • Page 21

    Appendix E - Asynchronous Communications OMG - ULTRA - SIO Page 17 Appendix E - Asynchronous Communications Serial data communications implies that individual bits of a character are transmitted consecutively to a receiver that assembles the bits back into a character. Data rate, error checking, handshaking , and character framing (start/stop bits)[...]

  • Page 22

    Appendix F - Silk - Screen OMG - ULTRA - SIO Page 18 Appendix F - Silk - Screen 4.2" 7.35" 3.9"[...]

  • Page 23

    Appendix G - Compliance Notices OMG - ULTRA - SIO Page 19 Appendix G - Compliance Notices Federal Communications Commission Statement FCC - This equipment has been tested and found to comply w ith the limits for Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful i[...]

  • Page 24

    W ARRANTY / DISCLAIMER OME GA ENGINEERING, INC. war rants this unit to be free of defects in materials and workmanship for a period of 1 3 months from date of purc hase. OM E G A ’ s W ARRAN TY adds an additional one (1) month grace period to the normal one (1) year pr oduct warranty to cover handling and shipping time. This ensures that OME GA ?[...]

  • Page 25

    M 21 9 6 /0303 Where Do I Find Ever ything I Need for Pr ocess Measurement and Control? OM EGA…Of Course! Shop online at www .omega.com TEMPERA TURE   Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies   Wire: Thermocouple, RTD & Thermistor   Calibrators & Ice Point References   Recorder[...]