Doc# E166703 E-7
E: Retrieving Logs
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Each descriptor is composed of 2 parts:
• Type: The data type of this descriptor, such as signed integer, IEEE floating point,
etc. This is the high nibble of the descriptor byte, with a value in the range of 0-14.
If this value is 0xFF, the descriptor should be ignored.
0 ASCII: An ASCII string, or byte array
1 Bitmap: A collection of bit flags
2 Signed Integer: A 2's Complement integer
3 Float: An IEEE floating point
4 Energy: Special Signed Integer, where the value
is adjusted by the energy settings in the MP200
unit's Programmable Settings.
5 Unsigned Integer
6 Signed Integer 0.1 scale: Special Signed Integer,
where the value is divided by 10 to give a 0.1
scale.
7-14 Unused
15 Disabled: used as end list marker.
• Size: The size in bytes of the item described. This number is used to determine the
pairing of descriptors with register items.
For example: If the first descriptor is 4 bytes, and the second descriptor is 2 bytes,
then the first 2 register items belong to the 1st descriptor, and the 3rd register item
belongs to the 2nd descriptor.
NOTE: As can be seen from the example, above, there is not a 1-to-1 relation
between the register list and the descriptor list. A single descriptor may refer to
multiple register items.
Register Items Descriptors
0x03C7/ Float, 4 byte
0x03C8
0x1234 Signed Int, 2 byte
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