Campbell Scientific SDM-CAN Datalogger to CANbus Interface - Manual (Page 5)

Table of Contents
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1. Introduction.................................................................1
1.1 General Description .............................................................................1
1.2 Specifications .......................................................................................2
1.2.1 General Features and Specifications .............................................2
1.2.2 Electrical Specifications................................................................3
1.2.2.1 Power Consumption ...........................................................3
1.2.3 Physical Specifications .................................................................4
2. Installation...................................................................4
2.1 Address Switch Configuration .............................................................4
2.2 Internal Jumper Settings.......................................................................5
2.3 Connection to the Datalogger and Power Supply.................................8
2.3.1 LED Status Indication.................................................................10
2.4 Connection to CAN-Bus. ...................................................................10
3. Programming CR10X, CR7 and CR23X
Dataloggers to use the SDM-CAN.........................12
3.1 General Principles ..............................................................................12
3.2 System Limitations.............................................................................13
3.3 The Datalogger Instruction.................................................................14
3.3.1 Instruction 118: SDM-CAN........................................................15
3.3.2 SDM Address (Parameter 01:) ....................................................15
3.3.3 TQUANTA, TSEG1, TSEG2 (Parameters 02:, 03:, 04:) ............15
3.3.4 ID (Parameters 05:, 06:, 07:).......................................................17
3.3.5 Data Type (Parameter 08:)..........................................................18
3.3.5.1 Collect and retrieve a data value: .....................................19
3.3.5.2 Build a data frame for transmission: ................................19
3.3.5.3 Transmit individual data values onto the CAN-Bus:........20
3.3.5.4 Transmit a previously built data frame on to the
CAN-Bus (type 25):......................................................20
3.3.5.5 Set-up previously built data frame as a Remote Frame
Response (type 26): ......................................................21
3.3.5.6 Read error counters (type 27):..........................................21
3.3.5.7 Read and reset the error counters (type 28):.....................21
3.3.5.8 Read status (type 29):.......................................................21
3.3.5.9 Read the signature and version number of the
SDM-CAN operating system (type 30): .......................22
3.3.5.10 Send Remote Frame Request (type 31):...........................22
3.3.5.11 Set SDM-CAN internal software switches (type 32): ......22
3.3.5.12 Read SDM-CAN internal switches (type 33):..................24
3.3.6 Start Bit Number (Parameter 09:) ...............................................24
3.3.7 Number of Bits (Parameter 10:)..................................................24
3.3.8 Number of Values (Parameter 11:) .............................................25
3.3.9 Location (Parameter 12:) ............................................................25
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