Fujitsu AJ 126LELDH Series Design & Technical Manual page 654

¢ System diagram
• Proper system diagram
General purpose
Modbus master unit
(Modbus device)
Lighting
facilities
Security
system
Automatic fire
alarm interface
Ventilation
system
Indoor unit
Outdoor unit
• Connected unit
Maximum controllable indoor units number per 1 Modbus converter
Maximum controllable outdoor units number per 1 Modbus converter
Maximum connectable Modbus converter number per 1 VRF network system
Maximum number of connected Modbus converter
units to one Modbus master unit
3-7. Modbus converter for VRF (UTY-VMGX)
Modbus
convertor
(UTY-VMGX)
Modbus
network
Modbus
convertor
(UTY-VMGX)
VRF network
- (05-154) -
Maximum 100
outdoor units
Maximum 100
outdoor units
Without repeater
With repeater
Maximum 128
indoor units
Maximum 128
indoor units
128
100
9
31
247
3. Adaptor/Convertor units