Henny Penny Velocity OXE-100, Operation Manuals

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Zigbee
Radio
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of converting this information to the ZigBee wireless format and broadcasts it on to the ZigBee
wireless network.
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ZigBee is the name of a type of wireless communications technology and protocol, just as WiFi and
BlueTooth are names for other types of wireless network technologies.
The advantage of a ZigBee network—particularly in a commercial kitchen where large panels of
stainless steel may obstruct other technologies—is that ZigBee can form a wireless mesh network,
where the various radios that have joined the network are able to forward messages from one device
to another. If a piece of equipment is out of range or is blocked from communicating directly with
some other piece of equipment at the other end of the building, the radio modules in between can
receive and forward messages as needed. That is, if equipment A cannot talk directly to equipment
C, but A can talk to B and B can talk to C, then A will send the message to B, and B will pass it on to
C.
The ZigBee protocol operates in the 2.4 GHz range and is therefore approved for operation
worldwide. The data rate in the 2.4 GHz band is about 250 kilobits a second, which is acceptable
performance for in-store monitoring of equipment status.
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A mesh network is a network topology in which each node relays data for the network. All mesh
nodes cooperate in the distribution of data in the network. Mesh networks can relay messages using
either a flooding technique or a routing technique. The flooding technique releases the data packets
on to the network without specific routing instructions. The routing technique is more sophisticated
and requires a table of addresses, which is used to route the data packets from point to point.
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In a Smart Kitchen application a ZigBee (wireless) signal can travel through ZigBee (wireless)
enabled appliances regardless of which appliance the signal originates from. Each ZigBee (wireless)
enabled appliance becomes a node on the network. Eventually the signal reaches a local or virtual
(over the Internet) server which contains the Operator’s Smart Kitchen software. The upside is the
signal from the Henny Penny fryer has many additional opportunities to reach the server
successfully. The downside is if our signal is blocked by a structure (i.e. wall, distance, etc.) and is
using another appliance (node) to reach the server, then we have an additional point of failure. As an
example, if the signal is being routed through a refrigerator (node) and not directly connecting to the
server, then the refrigerator becomes a point of failure.
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There are two major steps to installing the Digi ZigBee radio; hardware installation and setting
configuration.
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