About the article

PC Interface for the CAN Bus

with new software

PC Interface for the CAN Bus
The versatility of a CAN Bus system increases as more equipment of different types are connected to the Bus. Using the interface described here, any PC can be linked to a CAN Bus system.Before any piece of equipment is designed to connect to a PC, the main question that needs to be answered is: how will the equipment talk to the PC? We could pass the data through a plug-in card, connecting to the PC's motherboard but this would mean that most Notebook PC's would not be able to accommodate it. Using the serial interface is also a possibility but is relatively slow, so the parallel printer interface seems to be the best bet to handle the high data rate of this CAN Bus system.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

R1-R12,R17,R18,R19,R21 = 390?
R13 = 4k?7
R14,R15,R20 = 10k?
R16 = 56k?
R22,R23 = 5?6
R24 = 120?
R25 = 4-way SIL arary 4k?7
R26 = 8-way-SIL array 4k?7
C1,C2 = 22pF
C3 = 10µF 25V radial
C4,C9,C10,C11 = 100nF, 5 mm raster
C5 = 470µF 25V radial
C6 = 220µ 10V radial
C7 = 100µ 10V radial
C8 = 1µF 10V or solid MKT raster 5mm
D1,D2 = zener diode 12V 400 mW
D3 = 1N4004
IC1 = PCA82C200 or SJA1000 * (Philips)
IC2,IC3 = 6N137 (Toshiba)
IC4 = PCA82C250 (Philips)
IC5 = NMV0505SA (Newport, Farnell #589 810)
IC6 = 7805
JP1 = Jumper
K1 = 9-way sub-D plug (male), PCB mount.
K2 = 9-way sub-D socket (female), PCB mount.
K3 = 25-waySub-D plug (male), PCB mount
2 solder pins
X1 = 16 MHz quarz crystal
Disk, order code 006004-1 (DOSInterface and source code in C)
PCB, order code 000039-1
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