Communication Protocol - LG SV-iC5 User Manual

4.3 Installing RS232-485 converter
Installing method is different from makers. Refer to converter manual for installation.
4.4 Computer, Converter and Option board connection
4.4.1 System configuration
232,485 converter
# Max connectable inverters: 32
# Extention Line Length: Max 1200m (Less than 700m recommended)
5.

Communication protocol

① Use the ModBus-RTU protocol (Open).
② Computer or other hosts are a Master with inverter Slaves. Inverter responds to the
Read/Write request by Master.
5.1 Supported Function Code
Function Code
0x03
0x04
0x06
0x10
Figure 2. System configuration
Read Hold Register
Read Input Register
Preset Single Register
Preset Multiple Register
6
MODBUS-RTU user manual
Master controller
(PC, PLC etc.)
Inverter with option
board installed
Name