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SDM-CAN Datalogger-to-CANbus Interface

;Retrieve Data from CAN network B

3: SDM-CAN (P118)

1: 01 SDM Address

2: 4 Time Quanta

3: 5 Tseg1

4: 2 Tseg2

5: 1024 ID Bits 0..10 (-- for 11-bit CAN ID)

6: 7680 ID Bits 11..23

7: 12 ID Bits 24..28

8: 2 Rx, unsigned int, LSB 1st

9: 33 Start Bit No.

10: 16 No. of Bits

11: 1 No. of Values

12: 2 Loc [ Eng_1 ]

13: 0.125 Mult

14: 0.0 Offset

;Retrieve Data from CAN network B

8: SDM-CAN (P118)

1: 01 SDM Address

2: 4 Time Quanta

3: 5 Tseg1

4: 2 Tseg2

5: 768 ID Bits 0..10 (-- for 11-bit CAN ID)

6: 7680 ID Bits 11..23

7: 12 ID Bits 24..28

8: 1 Rx, unsigned int, MSB 1st

9: 49 Start Bit No.

10: 8 No. of Bits

11: 1 No. of Values

12: 3 Loc [ Throttl_1 ]

13: 0.125 Mult

14: 0.0 Offset

*Table 2 Program

02: 0.0000 Execution Interval (seconds)

*Table 3 Subroutines

End Program

4. Programming CRBasic Dataloggers to use the

SDM-CAN

This chapter describes how to program the CR5000/CR9000X and older

CR9000 dataloggers, using CRBASIC language, to control the SDM-CAN

interface. Similar principles can be followed for newer CRX000 dataloggers

that include the SDM-CAN instruction in their operating system.

4.1 General Principles

Some newer dataloggers use the CRBASIC programming language. CRBASIC

incorporates an instruction which is virtually identical to P118, described in

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 75 76

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Campbell SDM-CAN Manual Página 43

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