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録音機器 Contemporary Controls CANISAのPDF インストレーション・マニュアルをオンラインで閲覧またはダウンロードできます。Contemporary Controls CANISA 7 ページ。 Canbus network interface module for isa bus computers

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Contemporary Controls CANISA インストレーション・マニュアル

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Table 2 — 32-byte Addressing

RA S4 S3 S2 S1 S0

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CAN Operation

CAN is currently described by ISO 11898. In terms of the Open Systems

Interconnection model (OSI), CAN partially defines the services for layer 1

(physical) and layer 2 (data link). Higher-layer protocols such as DeviceNet

and Smart Distributed System define additional services of the seven layer

OSI model. Both of these protocols use CAN circuitry and, therefore,

comply with the data link layer defined by CAN.

Medium access control (MAC) is accomplished through non-destructive bit-

wise arbitration. If a station attempting transmission fails to confirm that its

data is being accurately propagated, it assumes a higher priority message is

present on the network. Consequently, it halts transmission and reverts to

receiving mode. The highest priority message gets through and lower

priority messages are resent later. In this way network collisions do not

destroy data and eventually all stations gain access to the network.

PeliCAN Jumper Settings

= jumper installed

I/O

Address

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000

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080

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100

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180

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200

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280

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300

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380

TD990520-0IE

= don't care)

Table 3 — 128-byte Addressing

RA S4 S3 S2 S1 S0

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I/O

Address

000

080

100

180

200

280

300

380