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Multidrop & Tag & ID

Message posted by Marco Schramel (marco.schramel@go.bartec.de : 217.4.156.59) on 24 October 2002 at 12:59:39.

Hi all,

i am developing a hart slave.
The device works and can execute all implemented commandos. I have written a PC program which can communicate with me device over HART Modem.
Furthermore i ve bought me the full spec.

But some questions are still not clear to me:

1) Multidrop
How does multidrop mode really work ?
Has my slave to do something different with the signals as it is used in point-to-point ?
It isnt really clear.

2)TAG
What does Tag mean exactly. Is it an "extended" address of the device?
Could a device have more Tags (i thinks so, but i am not sure) ??

3)Device ID
My company is not a member of HCF.
Can we get a device ID and/or a manufacturer ID without the membership??

Please inform me, if you can help me.
In some questions, i can you help, too.

Bye
Marco




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