ELNet LT - 6.2 - Registers for ELNet LT Powermeter

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6.2 — Registers for ELNet LT Powermeter
The ELNet LT Energy & Powermeter is capable of
supporting either Function 03 or Function 04 Message Format (see
Table 6-3). In a reply to a query from the PC master for a reading
from a particular field, the response from the Powermeter can be
either in Format 03 or Format 04 but will depend on which Format
the query was originally sent.
The difference is significant because by using Function 03 the
ELNet LT will only send the INTERGER part of the field value
requested and the PC master will only display the INTERGER part
of the field value.
Function 04, on the other hand, is capable of sending two separate
halves of the full FLOAT requested information (each half
contained in a separate register). Then it is the task of the PC
master to merge the two halves into a full FLOAT reply (For more
detailed information See IEEE Standard 754 Floating-Point).
E.G. 1 If the user’s PC master supports Function 03, then the reply
will contain the INTERGER part of the field only.
The PC master requests the Voltage from Line1, and the
actual Voltage in that field is 230.5 Volts.
Function 03 will respond with the INTERGER only i.e.
230V.