WirelessHART Fieldgate SWG70 Instructions d'exploitation télécharger pdf (Page 46)

8 Fieldgate Configuration WirelessHART Fieldgate SWG70

44 Endress+Hauser

8.2.2 Advanced Setup

Channel Blacklist Where several wireless networks are in operation on a site and all are critical for plant operation, it

is advisable to set up them up such a way that mutual interference is avoided. This is done by

restricting the channels on which a particular network can broadcast.

In general, a WirelessHART network dynamically adapts channel usage to new situations, for

example if a new wireless network is installed in the area where the WirelessHART network is

located. If WLAN and WirelessHART are used together in a production environment, it is necessary

to set up channel usage manually in the Channel Blacklist.

It should be noted that a WLAN channel based on the IEEE 802.11 standard is wider than a

WirelessHART channel based on the IEEE 802.15.4 standard. If a WirelessHART network is to be

run parallel to a IEEE 802.11 network, several WirelessHART channels must be disabled. Also note

that the channel numbering differs for each type of network:

For example: If the WLAN uses channel number 5, channels 5 to 8 in the WirelessHART network

must be disabled.

Disabling channels 1 Disable a channel by deactivating its check box in the Channel Blacklist

– The number of remaining active channels must be odd

– At least 5 channels must remain active.

2 Click Send to Device to transfer the updated blacklist settings to the Fieldgate

– Fieldgate stores the updated blacklist but does not apply the updated settings until

the network is reformed.

3Go to Additional Functions > Reset and click Reform Network to apply the updated

channel blacklist.

Channel numbering

Wifi Wireless

HART

IEEE Wifi Wireless

HART

IEEE Wifi Wireless

HART

IEEE Wifi Wireless

HART

IEEE

1 1 – 4 11 –1 4

5 5 – 8 15 – 18 8 8 – 11 18 – 21 11 11 – 14 21 – 24

2 2 – 5 12 –1 5

6 6 – 9 16 – 19 9 9 – 12 19 – 22 12 12 – 15 22 – 25

3 3 – 6 13 – 16

7 7 – 10 17 – 20 10 10 – 13 20 – 23 13 13 – 15 23 – 25

4 4 – 7 14 – 17

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 123 124

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WirelessHART Fieldgate SWG70 Instructions d'exploitation Page 46