20 bacnet gateway, Multi v pi485 tx rx, Shield line of 0.75 mm – LG PQNFB17B0 User Manual

Page 20

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How to install

• When using the simple central controller with the BACnet Gateway

1. Connect the BUS-A and the BUS-B of the PI485 to C and D of the simple central controller.

2. Set the rotary switch of the simple central controller to match with the group number of the indoor

unit to control.

3. Set the dip switch number 1 of the simple central controller to Off as slave and set the dip switch

number 2 to On as LGAP use mode.

Note: Check the LGAP label at the right side of the case of the simple central controller.

Only the product with the label can be connected to the BACnet Gateway at the same time.
Connect the VCC and the GND of the simple central controller from the P1485 or separately to
the adaptor. (See the manual for the simple central controller.)

ON

L1 2 3 4

KSDO4H

Multi V

PI485

TX

RX

ON

L1 2 3 4

KSDO4H

Multi V

PI485

Rotary switch

DIP switch

Simple central controller

BUS-A

BUS-B

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

Shield line of 0.75 mm

2

(RS-485 communication line)

Ex)When controlling
the indoor Unit 10~1F,
setting the switch to 1.

CN-POWER

GND

CN-COM A

S4

S3

S12

S16

TX1

LED4

LED8

LED12

LED11

LED16

LED15

PWB:6870A10001A

ASM:6711A20005E

LED7

LED3

L

+

+

+

+

+

+

+

+

+

S15

S18

S19

S15

S11

S2

LED2

S5

S9

+

+

+

S1

IC1P

LED5

LED9

LED13

LED17

LED10

LED14

S14

+

S6

S10

CN-POWER

CN-COM B

ON

L1 2 3 4

KSDO4H

ON

L1 2 3 4

KSDO4H

1

2

3

20 BACnet Gateway

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