Electro Industries Shark 200T Especificaciones descargar pdf (Pagina 169)

Doc# E149701 B - 9

B: Modbus Map and 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 meter'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.

0x03C7/ Float, 4 byte

0x03C8

0x1234 Signed Int, 2 byte

1 2 ... 164 165 166 167 168 169 170 171 172 173 174 ... 297 298

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Electro Industries Shark 200T Especificaciones Pagina 169