6
RS485 Terminal Resistor:
DIP Switch
Description
1 on 2 off 3 off
Add 120 Ω resistor between A and B
1 off 2 on 3 off
Add pull-downresistor on B
1 off 2 off 3 on
Add pull-upresistor on A
2.4 LED Indicators
LED
Indication
Status
Description
SYS
System Status
Static On
System works
Slowly Blinks
Fail to acquire data from data interfaces
Static On
System error
ACT
Network Status
Off
Not join/register to network
Blinks as Requests
Send
join
network
requests
or
registering network requests
Blinks Twice
→
Static On Succeed to join/registerto network
Blinks Once
Succeed to send uplinks
Blinks Twice
Fail to send uplinks
Blinks Twice
Receive downlinks