Item Descriptor List - Electro Industries Shark 200 Installation & Operation Manual

Item Descriptor List:

Registers:
Size:
While the Register List describes what to log, the Item Descriptor List describes how
to interpret that information. Each descriptor describes a group of register items, and
what they mean.
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
1
2
3
4
5
6
7-14
15
• 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.
Electro Industries/GaugeTech
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
The Leader In Power Monitoring and Smart Grid Solutions
B: Modbus Map and Retrieving Logs
0x798E - 0x79C8
1 byte per item, 117 bytes (59 registers)
ASCII: An ASCII string, or byte array
Bitmap: A collection of bit flags
Signed Integer: A 2's Complement integer
Float: An IEEE floating point
Energy: Special Signed Integer, where the value
is adjusted by the energy settings in the meter's
Programmable Settings.
Unsigned Integer
Signed Integer 0.1 scale: Special Signed Integer,
where the value is divided by 10 to give a 0.1
scale.
Unused
Disabled: used as end list marker.
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Doc E149701 B-9