Security - ABB AWIN GW120 User Manual

CO N FI G U R AT IO N O F W I RE L E SS HA R T N ET WO R K
Field
Get Advertising Status
Advertising Time
Stale Data Timer
Channel Blacklist
6.6.1

Security

Two methods of security are available in a WirelessHART network created by AWIN GW120.
Accept Common Join Key
The Common Join Key security method uses a single, common key value entered in all Wire-
lessHART devices and the AWIN GW120 gateway. Each WirelessHART device sends the same
common key. If the key matches the entry in the gateway, the device is allowed to join the
network.
In the Common Join Key field, enter the common key value.
Require Access List Entry
The Access List security method allows access via an external join list in addition to a Join
Key.
To enable the Require Access List security mode, click the Require Access List Entry radio
button. In the MAC Address field, enter the MAC addresses of the WirelessHART devices in
the network.
36
Description
When active advertising is "ON," the AWIN GW120 sends fre-
quent beacons to join the network.
The period of time Active Advertising is enabled. It can be
enabled by selecting Enable button to the right of the field.
Data from WirelessHART devices is cached in the gateway.
This allows the gateway to respond quickly to host requests
without having to constantly obtain fresh device data (a
much slower transfer). To ensure the validity of the data
stored in cache, each point of data is time stamped.
If the cached value has not updated within one-third of the
stale data timer value, a downstream request for the update
will be sent to the device.
If the data in cache is not updated within the stale data
timer interval, a Modbus Exception code will be generated to
the host system and the cached value will be cleared from
the gateway.
Allows specific WirelessHART channels to be blocked from
use in the channel-hopping scheme. Channels must be
blocked in pairs, so an odd number of channels is always
available.
To provide blacklist channels: Separate channel numbers
with a comma and no spaces, example: 3,5,11,12.
See section
By selecting Submit All, the parameters configured on this page are saved and
downloaded to the AWIN GW120 gateway.
Channel Blacklist for details.
CO N FI G U R A T IO N
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