National Instruments 9862 Getting Started Manual Download Page 9 | Manualshive

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Figure 1.

CAN Bus Topology and Termination Resistor Locations

CAN

Node

CAN

Node

CAN

Node

Rt

Rt

CAN

Node

CAN_H

CAN_L

CAN_H

CAN_L

CAN_H

CAN_L

CAN_H

CAN_L

Bus Cable Length

Stub

Length

Connecting a CAN Bus to the NI 9862

You can connect the NI 9862 port to any location on a CAN bus.
Figure 2 shows one example of connecting the NI 9862 directly
to one CAN node.

NI 9862 Getting Started Guide

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© National Instruments

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Summary of Contents for 9862

Page 1: ...GETTING STARTED GUIDE NI 9862 1 Port High Speed CAN Module Fran ais Deutsch ni com manuals...

Page 2: ...ftware and hardware installation procedures in your chassis documentation Note The guidelines in this document are specific to the NI 9862 The other components in the system might not meet the same sa...

Page 3: ...or repair Safety Guidelines for Hazardous Locations The NI 9862 is suitable for use in Class I Division 2 Groups A B C D T4 hazardous locations Class I Zone 2 AEx nA IIC T4 and Ex nA IIC T4 hazardous...

Page 4: ...vice between the CAN signals and the NI 9862 CAN pins The device must prevent the CAN Port to COM voltage from exceeding 55 V if there is a transient overvoltage condition Special Conditions for Hazar...

Page 5: ...area of not more than Pollution Degree 2 as defined in IEC 60664 1 Caution The system shall be mounted in an ATEX IECEx certified enclosure with a minimum ingress protection rating of at least IP54 as...

Page 6: ...ield pin SHLD that you can connect to a shielded CAN cable Connecting SHLD may improve signal integrity and EMC performance in a noisy environment Caution You must use a UL listed ITE power supply mar...

Page 7: ...I call Table 3 lists recommended termination resistor values Table 1 Pin Assignments for the NI 9862 Connector Pin Signal 6 7 8 9 1 2 3 4 5 1 No Connection NC 2 CAN_L 3 COM 4 NC 5 SHLD 6 COM 7 CAN_H 8...

Page 8: ...ot terminated each signal change on the bus causes reflections that may cause communication errors Because the CAN bus is bidirectional both ends of the cable must be terminated However this requireme...

Page 9: ...AN_H CAN_L CAN_H CAN_L CAN_H CAN_L CAN_H CAN_L Bus Cable Length Stub Length Connecting a CAN Bus to the NI 9862 You can connect the NI 9862 port to any location on a CAN bus Figure 2 shows one example...

Page 10: ...gure 2 Connecting the NI 9862 to a CAN Device C Series Module CAN Device Rt CAN Cable With Optional Shield SHLD CAN_H CAN_L Vsup COM Rt SHLD CAN_H CAN_L Vsup COM 10 ni com NI 9862 Getting Started Guid...

Page 11: ...ble 3084A meets all these requirements and should be suitable for most applications Table 2 ISO 11898 Specifications for Characteristics of a CAN_H and CAN_L Pair of Wires Characteristic Value Impedan...

Page 12: ...20 If you are not using the onboard termination use the values listed in Table 3 Table 3 Termination Resistor Specification Characteristic Value Condition Termination resistor Rt 100 min Minimum power...

Page 13: ...or signal integrity problems Number of CAN Nodes The maximum number of nodes depends on the electrical characteristics of the nodes on the network If all nodes meet the ISO 11898 requirements you can...

Page 14: ...compatible and fully supports both 11 bit and 29 bit identifiers The port also has an NXP TJA1041AT High Speed CAN transceiver that is fully compatible with the ISO 11898 standard and supports baud ra...

Page 15: ...otherwise noted High Speed CAN Characteristics Transceiver NXP TJA1041AT Max baud rate 1 Mbps CAN_H CAN_L bus lines voltage 27 to 40 VDC CAN Supply voltage range VSUP 9 to 30 VDC MTBF Contact NI for B...

Page 16: ...wipe it with a dry towel Weight Approx 144 g 5 0 oz Safety Connect only voltages that are within the following limits Maximum Voltage1 Port to COM 27 to 40 VDC max Measurement Category I 1 The maximu...

Page 17: ...AINS is a hazardous live electrical supply system that powers equipment This category is for measurements of voltages from specially protected secondary circuits Such voltage measurements include sign...

Page 18: ...and Hazardous Locations Standards This product is designed to meet the requirements of the following electrical equipment safety standards for measurement control and laboratory use IEC 61010 1 EN 61...

Page 19: ...trol and laboratory use EN 61326 IEC 61326 Class A emissions Industrial immunity EN 55011 CISPR 11 Group 1 Class A emissions AS NZS CISPR 11 Group 1 Class A emissions FCC 47 CFR Part 15B Class A emiss...

Page 20: ...4 9 EC Potentially Explosive Atmospheres ATEX Online Product Certification Refer to the product Declaration of Conformity DoC for additional regulatory compliance information To obtain product certifi...

Page 21: ...e system Operating vibration Random IEC 60068 2 64 5 grms 10 Hz to 500 Hz Sinusoidal IEC 60068 2 6 5 g 10 Hz to 500 Hz Operating shock IEC 60068 2 27 30 g 11 ms half sine 50 g 3 ms half sine 18 shocks...

Page 22: ...60068 2 1 IEC 60068 2 2 40 C to 70 C Storage temperature IEC 60068 2 1 IEC 60068 2 2 40 C to 85 C Ingress protection IP40 Operating humidity IEC 60068 2 78 10 RH to 90 RH noncondensing Storage humidi...

Page 23: ...ntal Impact web page at ni com environment This page contains the environmental regulations and directives with which NI complies as well as other environmental information not included in this docume...

Page 24: ...he National Instruments website is your complete resource for technical support At ni com support you have access to everything from troubleshooting and application development self help resources to...

Page 25: ...If your product supports calibration you can obtain the calibration certificate for your product at ni com calibration National Instruments corporate headquarters is located at 11500 North Mopac Expr...

Page 26: ...d third party legal notices in the readme file for your NI product Refer to the Export Compliance Information at ni com legal export compliance for the National Instruments global trade compliance pol...

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