CompactPDO, NrOfTRPDO
Ernst Reißner <[email protected]> Wed, 26 Feb 2020 07:56:42 +0000
| Newsgroups | gmane.comp.hardware.bus.can |
|---|---|
| Message-ID | <[email protected]> |
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Hello,
In CIA306, Section 4.6.4.1 I read about CompactPDO but I cannot understand =
the example I read:
Example:
[DeviceInfo]
NrOfRXPDO =3D 5
CompactPDO=3D0x3
;explicitly defined RX-PDOs
[1402]
...
[1403]
There exist 3 implicit compact PDOs with the indexes 1400 h , 1401 h and 14=
04 h .
What I understand of that is that NrOfRXPDO =3D 5 implies that 5 PDOs from =
1400 are valid,
i.e. 1400-1404, right?
What I also understand is, that since only 1402 and 1403 are defined,
The rest, i.e. 1400, 1401 and 1404 are implicit.
I feel, this has nothing to do with CompactPDO, right? Otherwise, how can I=
relate bits 11bin with the missing pdos?
If I understand right, CompactPDO refers to defined subindices of PDOs, rig=
ht?
So in our example cob id and transmission type???
There is one sentence in CIA306 saying that explicit PDOs shall be fully de=
fined and so mayb CompactPDO refers to the implicit ones.
I compared indices of TPDO and of RPDO... Seems reasonable, that CompactPDO=
refers to both TPDO and RPDO, right?
How are the entries of the implicit PDOs are defined???
In CIA301, Section 7.5.2.25 I read on Default values.
For 00, CompactPDO seems to allow to reconstruct.
For 01 see value definition? What does this mean?
And what about profile and/ or manufacturer specific?
For example 02: what is the value if the PDO is not given explicitly???
Thanks all in advance for help!
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<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Hello, <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">In CIA306, Section 4.6.4.1 I re=
ad about CompactPDO but I cannot understand the example I read:
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Example:<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">[DeviceInfo]<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">NrOfRXPDO =3D 5<o:p></o:p></spa=
n></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">CompactPDO=3D0x3<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">;explicitly defined RX-PDOs<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">[1402]<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">...<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">[1403]<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">There exist 3 implicit compact =
PDOs with the indexes 1400 h , 1401 h and 1404 h .<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">What I understand of that is th=
at NrOfRXPDO =3D 5 implies that 5 PDOs from 1400 are valid,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">i.e. 1400-1404, right? <o:p></o=
:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">What I also understand is, that=
since only 1402 and 1403 are defined,
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">The rest, i.e. 1400, 1401 and 1=
404 are implicit.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">I feel, this has nothing to do =
with CompactPDO, right? Otherwise, how can I relate bits 11bin with the mis=
sing pdos?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">If I understand right, CompactP=
DO refers to defined subindices of PDOs, right?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">So in our example cob id and tr=
ansmission type???
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">There is one sentence in CIA306=
saying that explicit PDOs shall be fully defined and so mayb CompactPDO re=
fers to the implicit ones.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">I compared indices of TPDO and =
of RPDO… Seems reasonable, that CompactPDO refers to both TPDO and RP=
DO, right?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">How are the entries of the impl=
icit PDOs are defined???
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">In CIA301, Section 7.5.2.25 I r=
ead on Default values.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">For 00, CompactPDO seems to all=
ow to reconstruct.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">For 01 see value definition? Wh=
at does this mean?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">And what about profile and/ or =
manufacturer specific?
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">For example 02: what is the val=
ue if the PDO is not given explicitly???
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US">Thanks all in advance for help!=
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p> </o:p></span></p>
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