Carrier 40VCC8 - Communication and Control Protocols

56
1. Discrete Input--Query Function Code: 0x02
BIT name meaning remark
0 indoor 1 whether exist
0- non existent
1-existent
Whether the indoor unit has been answered.
1
indoor unit 1 status
(whether online)
0-not online
1-on line
Whether the registered indoor unit is o󰀪ine during
operation.
2 indoor 2 whether exist
0- non existent
1-existent
Whether the indoor unit has been answered.
3
indoor unit 2 status
(whether online)
0- not online
1- on line
Whether the registered indoor unit is o󰀪ine during
operation.
……
126
indoor 64 whether
exist
0- non existent
1-existent
Whether the indoor unit has been answered.
127
indoor unit 64 status
(whether online)
0- not online
1- on line
Whether the registered indoor unit is o󰀪ine during
operation.
Third party Modbus
Communication parameter:
Baud rate: 9600
Data bits: 8
Check bit: None
Stop bit: 1
One frame command nished,using CRC to check
XCT7 Single split and multi split HRV
SLAVE ID
Gateway’s address
(ranging from 1 to 32)
Unit ID:1-16, SLAVE ID 33
Unit ID:17-32, SLAVE ID 34
Unit ID:33-48, SLAVE ID 35
Unit ID:49-64, SLAVE ID 36
Unit ID:1, SLAVE ID 29
Unit ID:2, SLAVE ID 30
Unit ID:3, SLAVE ID 31
Unit ID:4, SLAVE ID 32
Wiring diagram and Installation