VEGA WHA-GW-WIRELESSHART GATEWAY - Manual (Page 14)

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Product Specifications
Figure 2.3Network structure and corresponding I/O structure
If a WirelessHART device loses communication to the Gateway, it keeps its position in the
Gateway's Instrument List and stays assigned to the respective I/O card. When
communication is established again, the device has the same channel/card values that it
had before.
The same principle applies to the field devices connected to the WirelessHART adapter:
After communication to the Gateway was lost, the field devices regain their previous
position in the Instrument List as soon as communication is established again.
1 HOST application
2 WirelessHART Gateway
3 WirelessHART field device (joined first): I/O card 0, channel 0
4 WirelessHART adapter (joined second): I/O card 1, channel 0
5 Wired devices 1...3 connected to WirelessHART adapter: I/O card 1, channel 1
Note!
The Instrument List is stored in a non-volatile memory. Card/channel number assignment
will remain the same after a Gateway power-up or software restart.