Samsung AVMKH020EA4 Service Manual page 260

6. Prepare to check the test operation with S-NET measurement instrument.
The system air conditioner can be checked with a computer. Connect S-NET measurement instrument before the test
operation as following figure.
(COM1/COM2)
Port
G Install the S-NET program to the computer.
G Connect a RS-485 converter with COM1 or COM2 port of computer.
G Set the position of converter slide to 485 and M.
G Connect the communication wire connected with converter to F1,F2 terminal.
• Connect the communication wire with (TX+:F1),(TX-:F2) on connecting.
Samsung Electronics
Transmitter PCB
Power
Power
connecter
(12V)
Outdoor Communication wire
Reference Sheet
Outdoor PCB
13-12