Viconics VT7682S Application Guide - Manual (Page 11)

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1.12. 5H stands for 5 hops maximum recommended.
5H is for a simple process when laying out the architecture of the network. ANY given device / node / controller should
be
“optimized” to be NO FURTHER IF POSSIBLE than 5 Hops to & from the Wireless Central Manager /
Coordinator. This is due to the nature of the Viconics Zigbee stack in the wireless controllers. To properly layout the
potential architecture and determine the number of Wireless Central Manager
’s required on the job site, you first need
to establish the maximum possible coverage of a single Wireless Central Manager with a wireless communication card
with a 5 hop maximum. This is also done with the survey tools & is covered in detail in the manual for the survey
procedures and tool usage: MAN VWG-SURVEY-Exx.
1.13. Best practice Zigbee initial network start-up procedure
In order to avoid creating orphan devices / nodes/ controllers and moving about devices / nodes / controllers during the
initial network start-up, it is recommended that you use the same power up sequence for devices as you originally did
during the survey. Again, please note that once a device / node / controller has been assigned a Zigbee address and
has joined the active Zigbee network, it will save its assigned Zigbee address to flash memory & re-use it afterwards
even after a power failure or a network re-start. The ONLY time a device / node / controller would require a NEW
Zigbee address is if the network is re-started with either a new PAN ID or a new Channel value. This causes the
currently assigned & saved Zigbee address in flash to be erased and will force the / node / controller to try to re-join a
new network. I.E. this is ONLY applicable during the initial network start-up.