2
017-
03
112
Operation
The HART status information in register 30228 returns
0000000010110000
that corresponds
to the hexadecimal value
0xB0
with
0xB0
=
0x80
+
0x20
+
0x10
. See chapter 12.1
■
0x80
: device malfunction
■
0x20
: cold start
■
0x10
: more status available
This information is also displayed in the
Measurement
window when hovering over the icon in
the
Com. Status
column.
Figure 8.9
Measurement
window
8.2
Network Enhancement
After having installed and set up a wireless network, give the network a couple of hours to
stabilize itself before taking the following steps.
Once the WirelessHART network is running, there are some simple measures that will help
enhancing network performance and reliability. Those measures are described in the following.
Verify Connections
Check that each device has joined the network and is communicating properly. See chapter
5.4.2 Details
If you cannot establish a connection to a device, the device is probably too far away or an
obstacle blocks the radio waves. In this case, add an additional device to bridge the gap.
Eliminate Bottlenecks
If the messages of several devices all have to pass through one single device to get to the
WirelessHART gateway, the network has a bottleneck. If the device at the bottleneck fails,
whole parts of the network get cut off from communication because there are no alternative
paths to route messages.
To eliminate bottlenecks in a wireless network, add at least one device near the bottleneck to
provide redundant communication paths.
There should always be at least two communication paths from one device to another.