National Instruments RS485 - Manual
National Instruments RS485 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – rdsoftwareversion; Note; cseriesdoc; Safety Guidelines; Hot Surface
- Page 3 – Safety Guidelines for Hazardous Locations; not; not; Caution
- Page 4 – Special Conditions for Hazardous Locations in Europe
- Page 5 – Special Conditions for Marine Applications; and search for the LR certificate, or; To meet radio frequency emission requirements
- Page 7 – Pin Assignments for RS485/RS422 DB-9 Male Connector; Connector
- Page 8 – Four-Position External Power Connector
- Page 9 – and COM; Powering the NI 9871 from an Isolated Power Source; Figure 3 shows how to use the optional y-adapter (available at
- Page 10 – All connections must be made before power is; Powering Multiple Modules from a Single Power Supply
- Page 11 – RS485 Bus Topology and Termination; -Wire Multidrop Network Using Terminating Resistors; RS485 terminators are available at
- Page 12 – RS485 Transceiver Control; Transceiver Control Pin Conditions; Enable
- Page 13 – Specifications
- Page 14 – Contact NI for Bellcore MTBF specifications at; Power Requirements; Power consumption from chassis; Power supply consumption from external supply V; Physical Characteristics; If you need to clean the module, wipe it with a dry towel.
- Page 15 – Safety; Maximum Voltage; Connect only voltages that are within these limits.; Measurement Category I; Do not connect to signals or use for
- Page 16 – Isolation Voltages; dielectric withstand test, 5 s; Hazardous Locations
- Page 17 – Safety Standards; For UL and other safety certifications, refer to the; Electromagnetic Compatibility; FCC Part 15A above 1 GHz
- Page 18 – For the standards applied to assess the EMC of this; For EMC compliance, operate this device with; CE Compliance; certification; , search by module number or product line, and
- Page 19 – Shock and Vibration; Environmental
- Page 20 – noncondensing; Environmental Management; For additional environmental information, refer to the
- Page 21 – Waste Electrical and Electronic Equipment (WEEE); EU Customers; At the end of their life cycle, all products; RoHS; Ёᅶ᠋; ヺড়Ё⬉ᄤֵᙃ; National Instruments; ড়㾘ᗻֵᙃˈ䇋ⱏᔩ; about China RoHS compliance, go to
- Page 22 – Where to Go for Support; you have access to
OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9871
4-Port, RS485/RS422 Serial Module
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Summary
NI 9871 Operating Instructions 2 ni.com This document describes how to use the National Instruments 9871 and includes specifications and pin assignments for the NI 9871. Visit ni.com/info and enter rdsoftwareversion to determine which software you need for the modules you are using. For information ...
© National Instruments Corp. 3 NI 9871 Operating Instructions Safety Guidelines for Hazardous Locations The NI 9871 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA II T4 and Ex nA II T4 hazardous locations; and nonhazardous locations onl...
NI 9871 Operating Instructions 4 ni.com Caution For Zone 2 applications, install a protection device between the RS485/RS422 signal cables and the NI 9871 RJ-50 jacks (ports 1– 4). The device must prevent the RS485/RS422 signal-to-signal or signal-to-COM voltage from exceeding 23 V if there is a tra...
