The primary use case for JACE WiFi connectivity is when, for whatever reason, the JACE cannot be directly Ethernet “patch cabled” to the desired IP LAN. However, that LAN provides a wireless WiFi router or access point (it is a “WLAN”). The JACE’s WiFi adapter effectively adds a “third” WLAN choice for this IP connectivity, apart from its LAN1 and LAN2 Ethernet ports.
Please note that WiFi support does not enable the JACE to operate as a Wifi “hotspot” or access point, nor does it enable the JACE to provide routing functions
between different LAN or Interface connections.
Two possible usage scenarios are:
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The only (primary) LAN connection needed to the JACE cannot be done using Ethernet cabling, perhaps for some physical reason that making it too expensive. In normal daily operation, neither physical (RJ-45) LAN port is used, meaning no cable is attached.
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The JACE is already (primary) LAN1 connected with a patch cable, but a separate, isolated WLAN has devices that need to be integrated in the station with a driver. This other WLAN provides a nearby wireless router that would save the expense of pulling more cable.
In any case, note that you need normal LAN connectivity to the JACE for the initial NiagaraAX configuration of this WiFi option.