1-1.System structure
HA system
RS485(modbus)
Max 500m
D3 net
Home Automation I/ F adapter
VRV System
Max 16 indoor units and 2 outdoor units can be connected to one HA I/F adapter
Forced off status
Forced off status of indoor units
Error
Malfunction, Warning with Error code
Filter sign
Filter sign of indoor units
Communication status
Communication error of indoor units
26 May 2011
Programmer’s Manual
Home Automation I/F adapter for VRV
Draft
Table of contents
1. Introduction
………
1
1-1. System structure
………
1
1-2. Limitations of this HA I/F adapter
………
17
4-1-3. Indoor unit communication status
………
18
4-1-4. Indoor unit capability information
………
19
4-1-5. Indoor unit status information
………
21
4-2. Holding register
3
2-2-3. Function code
………
4
2-2-4. Function format
………
4
2-2-5. Character format
………
8
2-2-6. Silent interval time
………
8
2-2-7. Response time
………
8
2-3. Communication procedure
1-2.Limitations of this HA I/F adapter
• The number of control command for one indoor unit must be within 7,000 times per year.
• If HA System controls VRV by using automatic control program, please make sure don’t exceed this limitation.
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25
4-2-1. Adapter initial settings
………
25
4-2-2. Indoor unit control
………
26
5. Error code mapping table
……… 28
1.Introduction
• To use this Home Automation I/F adapter, Home Automation system can control VRV with modbus protocol.
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12
3-1-4. Indoor unit capability information
………
13
3-1-5. Indoor unit status information
………
14
3-2. Holding register
………
15
3-2-1. Adapter initial setting
………
………
1
1-3. Functions
………
2
2. Modbus communication
………
3
2-1. Adapter setting
………
3
2-2. Communication format
………
3
2-2-1. Transmission mode
………
3
2-2-2. Data types
………
11
3. Modbus registers
……… 12
3-1. Input register
………
12
3-1-1. Adapter status
………
12
3-1-2. Indoor unit connection status
………
12Hale Waihona Puke Baidu
3-1-3. Indoor unit communication status
15
3-2-2. Indoor unit control
………
15
4. Modbus register structure
……… 16
4-1. Input register
………
16
4-1-1. Adapter status
………
16
4-1-2. Indoor unit connection status
Room temperature
Suction temperature of indoor units
Fan direction
Swing, Flap direction (depend on indoor unit capability)
Fan volume
LL, L, M, H, HH (depend on indoor unit capability)
Control
On/Off
On/Off control of indoor units
Operation mode
Cooling, Heating, Fan, Dry, Auto (depend on indoor unit capability)
1
1-3.Functions
Monitor
On/Off
On/Off status of indoor units
Operation mode
Cooling, Heating, Fan, Dry, Auto (depend on indoor unit capability)
Setpoint
Setpoint of indoor units
………
9
2-3-1. System initialization
………
9
2-3-2. Monitor and operate VRV from HA System
………
10
2-3-3. Other DAIKIN’s controllers are exist on the same system
………