Modbus Commands; Modbus Command Format; Table 6-3. Modbus Commands; Table 6-4. Format For Read Holding Register Command - Advanced Energy AE 600 User Manual

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MODBUS COMMANDS

All AE commercial inverters support basic Modbus commands. The commands in
the following table are used to read and write (set) inverter operating parameters or
obtain the unit's identifying information.
Table 6‑3. Modbus commands
Command Name
Read Holding Register
Write (preset) Single
Register
Return Slave ID

Modbus Command Format

The Read Holding Register command is used to read values from Modbus registers.
Table 6‑4. Format for Read Holding Register command
Modbus address
Command number
First register MSB
First register LSB
Data MSB
Data LSB
CRC LSB
6‑16
Command
Number
03
06
17
Command Information
Data Monitoring and Controls
Description
Read value from the register
Write value to the register
Returns a text string containing the ID
number of the inverter.
The format of the ID returned is
dependent on the version of the
inverter.
• "PVP Inverter
IDxxxxxxxxxxxxxx" on older
models
• "xxPVP Inverter
IDxxxxxxxxxxxxxx" for newer
models
Command Layout
570-1001791-05A
nn
03
xx
xx
xx
xx
xx