Appendix A; Mdi Settings; Power Device Classification Values - Planet POE-1200 User Manual

A.1 MDI Settings
The Medium-Dependant Interface (MDI or RJ-45) serves as the data/power interface
between Ethernet elements. As such, it has two optional connection methods to carry
the power, named Alternative A & B. The next table details the two power feeding
alternatives.
Pin
1
2
3
4
5
6
7
8
Delivering power through an RJ-45 connector's center tap ( Phantom Feeding ) guarantees
that bi-directional data flow is maintained, regardless of a module's power status.
A.2 Power Device Classification values
PD Current – Classification
Class
Period [mA]
0
1
2 17 -20
3 26 – 30
4 36 - 44
Alternative A
Vport Negative
Vport Negative
Vport Positive
Vport Positive
PD Power – Operation Period
0 – 4
9 – 12

APPENDIX A

Alternative B
Vport Positive
Vport Positive
Vport Negative
Vport Negative
[W]
0.44 – 12.95
0.44 – 3.84
3.84 – 6.49
6.49 – 12.95
Future use
Note
Default
Optional
Optional
Optional
Future
use
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