Communication Protocol - Larsen & Toubro C*2000 Series User Manual

the operating program for the inverter.
11.5 Communication protocol (MODBUS-RTU)
Use Modbus-RTU protocol (Open protocol).
Computer or other hosts can be Master and inverters Slave.
Inverter responds to Read/Write command from Master.
Code
0x03
Function 0x04
Code 0x06
0x10
0x01
0x02
Exception
0x03
Code
0x06
User defin
e
Cx2000 AC Drive
Description
Read Hold Register
Read Input Register
Preset Single Register
Preset Multiple Register
ILLEGAL FUNCTION
ILLEGAL DATA ADDRESS
ILLEGAL DATA VALUE
SLAVE DEVICE BUSY
1. Write Disable (Address 0x0004 value is 0).
0x14
2. Read Only or Not Program during Running.
Chapter 11 Communication
11-3