ICP DAS, ZT-257x DIO Data Concentrator Quick Start Guide, v1.0
Page 47
Copyright © 2016, by ICP DAS Co., LTD. All Rights Reserved
5.4
LED Status Indicator Definitions
The following is a summary of the functionality provided by the different LED status indicators
together with a description of the meaning of each.
LED Indicator
Status
Description
ZigBee Net
(Green LED)
ZigBee Coordinator (Host)
Lit
A ZigBee network has been established
Blinking to Lit
The same ZigBee network exist or to rejoin
ZigBee Router (Slave)
Lit
The signal strength is High
Blinking (500 ms)
The signal strength is Medium
Blinking (1 second) The signal strength is Low
Blinking (2 seconds)
The signal strength is Low or no signal is
unavailable
ZigBee RxD
(Yellow LED)
ZigBee Communication Status
Blinking
The module is receiving ZigBee Data
OFF
The module is waiting to receive ZigBee Data
ZigBee PWR
(Red LED)
ZigBee Module Status
Lit
The power is ON and the module is in
Communication mode
Blinking (200 ms)
The power is ON, but the module has failed to
initialize
Blinking (200 ms)
The module is in Configuration Mode
Blinking (1 s)
The Host watchdog is enabled
OFF
The power is OFF