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RDM Interpretation Questions Discussion and questions relating to interpreting and understanding the E1.20 RDM Standard. |
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#1 |
Task Group Member
Join Date: Jun 2006
Posts: 181
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Are we agreed that the data in the 32bit Hours/Lamp/Lamp Strike counters is unsigned ? ie max value is 0xFFFFFFFF ?
As far as I can see we do not explicitly state this anywhere in the document - apologies if I have missed it. regards Peter Willis |
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#2 |
Task Group Member
Join Date: Dec 2006
Posts: 14
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Yes. I can't think of any situation where there would be negative lamp hours, and anything other than an unsigned integer would only lead to confusion.
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#3 |
Administrator
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Yes, everything should be unsigned values so that the max value should be 0xFFFFFFFF.
It would also be a good idea for these type fields to not roll over if they exceed the 0xFFFFFFFF value and instead just remain at that Max value.
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Scott M. Blair ![]() RDM Protocol Forums Admin |
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#4 |
Task Group Member
Join Date: Jun 2006
Posts: 181
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Just a note that this was discussed at the Jan 19th 2007 Task group meeting in Dallas and that Scott's response reflected the consensus of the group at that time.
Peter Willis |
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