How to install
Installation/Owner Manual
19
ENGLISH
(3) Connecting PI485 – BACnet Gateway
1. When connecting two or more PI485s to one BACnet Gateway, connect each BUS-A/BUS-B of
other PI485s to be connected to BUS-A/BUS-B of the PI485.
2. Connect the BUS-A of the PI485 to the TX of the BACnet Gateway and the BUS-B to the RX.
• Connect LG-NET 1~4 to any of the BACnet Gateway. (Connect the LG-NET to the RS485 port)
• 64 outdoor units at maximum can be connected to each 485 port of the BACnet Gateway and the
number of indoor units to be connected to the BACnet Gateway is 256 at maximum.
Note:
Disconnect the connector from the 485 port of the BACnet Gateway, connect the BUS-A to
the TX and the BUS-B to the RX by using the (-) driver, and then connect the connector to the
485 port of the BACnet Gateway. Because the 485 communication line has a polarity, connect
the line correctly.
LG-NET 1
MENU/
SELECT
TX
RX
LG-NET 2
TX
RX
LG-NET 3
TX
RX
LG-NET 4
TX
RX
Ethernet 1
ACT
LNK
Ethernet 2
ACT
LNK
Console
Run
Power
TX
RX
Ext 1
TX
RX
Ext 2
TX
RX
DI
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DO
1
2
3
4
ON
L1 2 3 4
KSDO4H
Multi V
PI485
TX
RX
ON
L1 2 3 4
KSDO4H
Multi V
PI485
ON
L1 2 3 4
KSDO4H
Multi V
PI485
Shield line of 0.75 mm
2
(RS485 communication line)
→
1
2
BACnet Gateway side
PI-485 side
Bus_A
TX
RX
Bus_B
Summary of Contents for BNU-BAC
Page 401: ...CHINESE LG BNU BAC BACnet閘道器 安裝 使用指南 LG 重要須知 安裝與操作室內空調設備前 請先詳閱本安裝指南 閱讀完畢後 請將本指南妥善保存以備日後參考之用 ...
Page 431: ...安裝 使用指南 31 CHINESE 測試作業程序 檢視監督資訊的功能 點擊顯示幕上的圖示 如下所示 會出現遠端診斷頁面 以便您檢視室內空調 通風設備的運作資訊 ...
Page 432: ...32 BACnet閘道器 測試作業程序 檢視控制功能 室內空調 點擊遠端診斷頁面的 監督 室內空調 通風設備 按鍵 您就可以即時檢視到室內空調 通風設備的 資訊 ...