Difference between channel & mode dependant channel

[R_J]

Hello

What is the difference between Channel & Mode dependent channel (except that channel is created under message & Mode dependent channel under multiplexer).How we decided when to use which channel .

What is the multiplexer in CAN & when we use it (its application).

How we calculate (finalize) the arbitration id of the message?

If anybody know then pleaseeply.

Regards

RJ

[DirkW]

Hi RJ,

In some cases the number of available identifiers is too small to transmit all of the data, so an extension to these identifiers is needed.

The mode dependent message is only a normal message but with multiple allocations for channels. That means you can define a multiplexer and thus create multiple modes with different channels.

The ID is still the same only the number of channel changes.

For more information see the NI-CAN Hardware and Software Manual on page 6-23.

DirkW

[R_J]

Hi DirkW

thanks for the reply. I shall be very thankful if you explain little bit more or provide some tutorials or link.

Regards

RJ 

[biker2000]

Hi RJ,

Having the NI-CAN software (version 2.2 or higher) installed, there are two options:

1. Open the Measurement and Automation Explorer and navigate to Help » Help Topics » NI-CAN » MAX Help. Take a look at the 'Mode-dependent Channels in MAX' chapter and also search that help file for the term 'mode-dependent' to get more information about mode-dependent channels and messages.
   
2. Open the 'NI-CAN Hardware and Software Manual' (see Start » Programs » National Instruments » NI-CAN) and navigate to the 'Mode Dependent Channels' section of chapter 6 (Using the Channel API). This also provides a short introduction into mode dependant channels.
   

-B2k