Installation and Operation Instructions
Notes:
KWL Modbus RS 485 – Communication protocol
2 .1
Supported MODBUS messages from the KWL unit
MODBUS error code
Code
Name
03
Read Holding Register
04
Read Input Register
06
Write Register
16
Write Register
17
SLAVE-ID
Meaning
Pursuant to Modbus standard
Pursuant to Modbus standard
Pursuant to Modbus standard
Pursuant to Modbus standard
Internal unit ID
5
EN