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