National Instruments RS422 Uživatelský manuál

OPERATING INSTRUCTIONS AND SPECIFICATIONSNI 98714-Port, RS485/RS422 Serial Module

NI 9871 Operating Instructions 10 ni.comadditional module. Ensure that the power supply can handle maximum power requirements for all modules connecte

© National Instruments Corp. 11 NI 9871 Operating InstructionsRS485 Bus Topology and TerminationRefer to Figure 4 and Figure 5 for an overview of 4-wi

NI 9871 Operating Instructions 12 ni.comRS485 Transceiver ControlRefer to Table 3 for a listing of TX and RX enable conditions for the different RS485

© National Instruments Corp. 13 NI 9871 Operating InstructionsSleep Mode (CompactRIO Only)You can enable sleep mode for the CompactRIO system in softw

NI 9871 Operating Instructions 14 ni.comNote Contact NI for Bellcore MTBF specifications at other temperatures or for MIL-HDBK-217F specifications.Pow

© National Instruments Corp. 15 NI 9871 Operating InstructionsSafetyMaximum Voltage1Connect only voltages that are within these limits.RS485/RS422 Por

NI 9871 Operating Instructions 16 ni.comIsolation VoltagesPort-to-earth groundWithstand... 1000 Vrms, verified by a d

© National Instruments Corp. 17 NI 9871 Operating InstructionsSafety StandardsThe NI 9871 is designed to meet the requirements of the following standa

NI 9871 Operating Instructions 18 ni.comNote For the standards applied to assess the EMC of this product, refer to the Online Product Certification se

© National Instruments Corp. 19 NI 9871 Operating InstructionsShock and VibrationTo meet these specifications, you must panel mount the CompactRIO sys

NI 9871 Operating Instructions 2 ni.comThis document describes how to use the National Instruments 9871 and includes specifications and pin assignment

NI 9871 Operating Instructions 20 ni.comOperating humidity... 10 to 90% RH, noncondensing Storage humidity...

© National Instruments Corp. 21 NI 9871 Operating InstructionsWaste Electrical and Electronic Equipment (WEEE)EU Customers At the end of their life cy

NI 9871 Operating Instructions 22 ni.comWhere to Go for SupportThe National Instruments Web site is your complete resource for technical support. At n

© National Instruments Corp. 23 NI 9871 Operating InstructionsKorea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28, Malaysia 1800 887710, Mexico 01 800 0

© 2007–2008 National Instruments Corp. All rights reserved.372277B-01 Sep08National Instruments, NI, ni.com, and LabVIEW are trademarks of National In

© National Instruments Corp. 3 NI 9871 Operating InstructionsSafety Guidelines for Hazardous LocationsThe NI 9871 is suitable for use in Class I, Divi

NI 9871 Operating Instructions 4 ni.comCaution For Zone 2 applications, install a protection device between the RS485/RS422 signal cables and the NI 9

© National Instruments Corp. 5 NI 9871 Operating InstructionsSpecial Conditions for Marine ApplicationsSome modules are Lloyd’s Register (LR) Type App

NI 9871 Operating Instructions 6 ni.comWiring the NI 9871The NI 9871 has four RJ-50 receptacles that provide connections for four RS485/RS422 devices.

© National Instruments Corp. 7 NI 9871 Operating InstructionsThe cables included with your kit convert the RJ-50 pinout to the standard NI pinout, as

NI 9871 Operating Instructions 8 ni.comYou must connect an external power supply to the NI 9871. This power supply provides the power for the RS485/RS

© National Instruments Corp. 9 NI 9871 Operating InstructionsFigure 2 shows the method of power connection to the NI 9871 module. Attach an isolated p