ICP DAS USA ZT-257 Series, Быстрый старт

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ICP DAS, ZT-257x DIO Data Concentrator Quick Start Guide, v1.0
Page 36
Copyright © 2016, by ICP DAS Co., LTD. All Rights Reserved
(3) Check Alive Device List
ZT-2570 ZT-20xx-IOG
 
Description:
The Check Alive Device List allows the status of the connection to all ZT-IOG modules in the
ZigBee network to be monitored. To enable the status detection function for the specified
address on the ZigBee Coordinator, set the Node ID for the module to
“
ON
”
.
5.2.2. The Safe Value function
The Safe Value function is an emergency measure that specifies the action to be taken if
wireless communication is interrupted. The ZigBee Router will regularly be communicated
with the ZigBee Coordinator, so that if wireless communication is interrupted for a duration
that exceeds the value specified for the Watchdog Timer (WDT), the status of the DO
channel(s) on the ZigBee Router will immediately be changed to the Safe Value.
- For a ZT-20xx-IOG module (being used as a ZigBee Router)
If the wireless communication is interrupted, the state of the channel will be automatically
changed to the Safe Value. Once wireless communication resumes, the state of the DO
channel will automatically return to the normal output value.
- For a ZT-2571 module (ZigBee Router)
If the wireless communication is interrupted, the state of the virtual/logical channel (Modbus
Register) will be automatically changed to the Safe Value. Once wireless communication
resumes, the state of the DO channel will automatically return to the normal output value.