National Instruments NI 9852 - Manuals

© National Instruments Corp. 5 NI 9852 Operating Instructions Each port has two isolated common pins (COM) that are internally connected to the isolated reference of the module and serve as the reference ground for CAN_H and CAN_L. Connect the CAN bus reference ground (sometimes referred to as CAN_V...

NI 9852 Operating Instructions 6 ni.com Table 1. Pin Assignments for CAN0 Connector Pin Signal 1 No Connection (NC) 2 CAN_L 3 COM0 4 NC 5 SHLD 6 COM0 7 CAN_H 8 NC 9 V SUP0 6789 12345

© National Instruments Corp. 7 NI 9852 Operating Instructions Table 2. Pin Assignments for CAN1 Connector Pin Signal 1 No Connection (NC) 2 CAN_L 3 COM1 4 NC 5 SHLD 6 COM1 7 CAN_H 8 NC 9 V SUP1 6789 12345

NI 9852 Operating Instructions 8 ni.com CAN Bus Topology and Termination A CAN bus consists of two or more CAN nodes cabled together. The CAN_H and CAN_L pins of each node are connected to the main CAN bus cable through a short connection known as a “stub.” The pair of signal wires, CAN_H and CAN_L ...

© National Instruments Corp. 9 NI 9852 Operating Instructions Figure 1. CAN Bus Topology and Termination Resistor Locations Connecting a CAN Bus to the NI 9852 Each port of the NI 9852 can be connected to any location on a CAN bus. Figure 2 shows one example of the connection of CAN0 of the NI 9852 ...

NI 9852 Operating Instructions 10 ni.com Figure 2. Connecting Both Ports of the NI 9852 to CAN Buses CAN1 CAN De vice CAN0 NI 9852 CAN Cable(With Optional Shield) (SHLD) CAN_H CAN_L V sup1 COM1 (SHLD) CAN_H CAN_LV sup1 COM1 CAN De vice CAN Cable(With Optional Shield) (SHLD) CAN_H CAN_L V sup0 COM0 (...

© National Instruments Corp. 11 NI 9852 Operating Instructions Cabling Requirements for NI 9852 This section deals with cabling specifications, termination resistors, cable lengths, and the number of CAN nodes that can exist in a system. Cable Specifications Cables should meet the physical medium re...

NI 9852 Operating Instructions 12 ni.com Determining the Necessary Termination Resistance for the Board Unlike High-Speed CAN, Low-Speed/Fault-Tolerant CAN requires termination at the Low-Speed/Fault-Tolerant CAN transceiver instead of on the cable itself. Termination requires two resistors, RTH for...

© National Instruments Corp. 13 NI 9852 Operating Instructions Number of CAN Nodes The maximum number of nodes depends on the electrical characteristics of the nodes on the network. If all of the nodes meet the requirements of Low-Speed/Fault-Tolerant CAN, up to 32 nodes may be connected to the bus....

© National Instruments Corp. 15 NI 9852 Operating Instructions Sleep Mode (CompactRIO Only) You can enable sleep mode for the CompactRIO system in software. In sleep mode, the system consumes less power and may dissipate less heat. Typically, when a system is in sleep mode, you cannot communicate wi...

NI 9852 Operating Instructions 16 ni.com Specifications The following specifications are typical for the range – 40 to 70 °Cunless otherwise noted. Low-Speed/Fault-Tolerant CAN Characteristics Transceiver ........................................ Philips TJA1054A Max baud rate ..........................

© National Instruments Corp. 17 NI 9852 Operating Instructions Note Contact NI for Bellcore MTBF specifications at other temperatures or for MIL-HDBK-217F specifications. Power Requirements Power consumption from chassis Active mode Transmitting ......................... 400 mW maxReceiving ...........

NI 9852 Operating Instructions 18 ni.com Safety Maximum Voltage 1 Connect only voltages that are within these limits. Port-to-COM ..................................... –27 to +40 VDC max, Measurement Category I Measurement Category I is for measurements performed on circuits not directly connected t...

© National Instruments Corp. 19 NI 9852 Operating Instructions Isolation Voltages Port-to-port Withstand.................................... 500 V rms , 5 s Continuous ................................. 60 VDC, Measurement Category I Port-to-earth ground Withstand.................................... ...

NI 9852 Operating Instructions 20 ni.com Hazardous Locations U.S. (UL) .......................................... Class I, Division 2, Groups A, B, C, D, T4;Class I, Zone 2, AEx nA II T4 Canada (C-UL) ................................. Class I, Division 2, Groups A, B, C, D, T4;Class I, Zone 2, Ex nA...

© National Instruments Corp. 21 NI 9852 Operating Instructions Storage humidity............................... 5 to 95% RH, noncondensing Maximum altitude............................. 2,000 m Pollution Degree (IEC 60664) .......... 2 Shock and Vibration To meet these specifications, you must panel m...

NI 9852 Operating Instructions 22 ni.com Electromagnetic Compatibility This product is designed to meet the requirements of the following standards of EMC for electical equipment for measurement, control, and laboratory use: • EN 61326 EMC requirements; Minimum Immunity • EN 55011 Emissions; Group 1...

© National Instruments Corp. 23 NI 9852 Operating Instructions Note Refer to the Declaration of Conformity (DoC) for this product for any additional regulatory compliance information. To obtain the DoC for this product, visit ni.com/certification , search by model number or product line, and click t...

NI 9852 Operating Instructions 24 ni.com Waste Electrical and Electronic Equipment (WEEE) EU Customers At the end of their life cycle, all products must be sent to a WEEE recycling center. For more information about WEEE recycling centers and National Instruments WEEE initiatives, visit ni.com/ envi...

© National Instruments Corp. 25 NI 9852 Operating Instructions National Instruments Contact Information National Instruments corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas, 78759-3504. National Instruments also has offices located around the world to help address yo...