Vega WHA-GW-WIRELESSHART GATEWAY User Manual download pdf (Page 14)

221981 2011-07

WHA-GW-*

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.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 95 96

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Vega WHA-GW-WIRELESSHART GATEWAY User Manual Page 14