ELNet LT - 6.1.3 - Address Field; 6.1.4 - Function Field

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6.1.3 — Address Field
Each Powermeter is designated in a network system by a user
assigned address. The Address can be any number between 1 and
247. The Powermeter will only respond to its own specifically
assigned address.
6.1.4 — Function Field
The function field contains the code that tells the Powermeter what
action to perform.
The ELNet LT Energy & Powermeter uses and responds to four
standard Message Format Functions.
Function 03
Function 04
Function 06
Function 16
Function Meaning in MODBUS
Action
Function 03
Read holding register Obtain data from Powermeter
(Read register)
Function 04
Read input register Obtain data from Powermeter
(Read register)
Function 06
Preset single register Transmit data to Powermeter
(Write single register)
Function 16
Preset multiple register Transmit data to Powermeter
(Write multiple register)
Table 6.3 Function Codes