LG AC Smart 5 Installation Manual page 11

AC Smart 5 connects with PI485 and uses RS485 to communicate and exchange information.
Allocate unique addresses to those devices (internal units, ERV, DI/DOs, DOKITs, AWHPs,
AHUs, I/O Modules) that shall connect with AC Smart 5.
The addresses are hexadecimal numbers that can be chosen from 00 to FF.
AC Smart 5
NOTE
!
• The maximum allowed communication distance guaranteed by LG Electronics is 1,000 m.
It means that the distance between AC Smart 5 and the farthest device should NOT exceed 1
000 m. It is recommended that the communication cable is 0.75 mm square or more.
• For indoor units, ERV, DI/DOs, DOKITs, AWHPs, AHUs and I/O Modules, you can allocate
different but NOT identical addresses amongst devices of the same type. (the indoor unit and
DOKIT cannot use the same address.)
• Each device which can be used with PDI must be set to a unique address when connected with PDI.
For further information about the devices can be used with PDI, please refer to the PDI manual.
• Connecting I/O Module, address setting should not be 00 as 00 is used to Broadcast in
MODBUS communication.
• CH1 is set as MODBUS and CH2 is set as LGAP by default. To change default setting, refer to
the contents of 'Device Setting (AC Smart 5) - AC Smart 5 Editing' in the user manual provided
(Section 'Help').
Power Distribution
watt-hour meter
Indicator (PDI)
Outdoor Units
Indoor devices 1
Configuration
Address: 01
ERV
Configuration
Address: 11
DI/DO, DOKIT
Configuration
Address: 21
...
AWHP
AHU
Configuration
Address: 41
PRODUCT SPECIFICATION
Indoor devices 2 Indoor devices 3
Configuration Configuration
Address: 02 Address: 03
Configuration
Address: 31
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