Operating instructions

9Diagnostics WirelessHART Fieldgate SWG70
52 Endress+Hauser
9.2 Wireless Communication
The Wireless Communication leaf contains information on the operation of Fieldgate SWG70
within the wireless network.
9.2.1 Overview
Overview provides information about the I/O interfaces of the wireless network as well as network
statistics.
1 Click on the Diagnostics => Wireless Communication => Overview leaf to display the
associated parameters:
– The significance of the parameters can be taken from the table below.
Parameter Meaning
I/O System Capabilities
Max. Card Number Indicates the maximum number of cards in the I/O system. This corresponds to the
maximum number of wireless devices that can be connected to the gateway.
Max. Channel Number Indicates the maximum number of channels.
Max. Sub Dev. Number Indicates the maximum number of sub devices that can be connected to a specific
channel.
Number of Devices Indicates the current number of subdevices. Every device counts as a subdevice, no
matter if it is a wireless device or a wired device connected to a WirelessHART adapter.
Lifetime Network Statistics
Reliability Ratio of the number of successful packet transmissions to the sum of the successful and
permanently lost packet transmissions taken across the entire network
Stability Ratio of the number of successful packet transmissions to the sum of the successful and
unsuccessful packet transmissions taken across the entire network
– Unsuccessful transmissions are repeated for as many time as necessary using all
communication paths available. If the repeat process is interrupted, e.g. by removing
the device from the network, then the corresponding packets are counted as lost.
Latency Average time taken for packets generated by the wireless devices to reach the gateway
Lost Upstream Packages Total number of packets generated by the wireless devices that were lost when
transferred over the network.