LG PAHCNM000 Owners & Installation Manual page 40

HMI SETTINGS
40
8. Error Display
• If an error occurs while the air conditioner is operating, an error indication will appear on the
HMI screen.
• It is displayed along with an error code.
• Refer to the 'Self-diagnosis Function' section of the appendix for detailed error information
for the air conditioner.
• For outdoor unit error information, refer to the error code for each product group.
• The following is the protocol provided for connecting external devices to Modbus.
- Physical Layer: RS-485 Serial Line
- Mode: MODBUS RTU Mode
- Baud Rate: 9 600
- Parity: None Parity
- 1 Stop Bit
- Applied Function Code
Function Code Sub Function
0x01 None
0x02 None
0x03 None
0x04 None
0x05 None
0x06 None
Reserved for
0xF1~FF
Exception Code
Refer to the Modbus protocol in the appendix.
Function Name
Read Coil
Read Discrete Input
Read Holding
Read Input
Write Single Coil
Write Single Holding
Start Address form
Master Device
Register Address-1
Register Address-10001
Register Address-40001
Register Address-30001
Register Address-1
Register Address-40001