Wi-Fi ® Connectivity Scenarios; Connections Supported By Wi-Fi Modes - ABB XIO-08 User Manual

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11 Wi-Fi connectivity scenarios
®
The XIO supports Wi-Fi
client. Wireless support depends on the Wi-Fi mode of operation configured on the XIO.
IMPORTANT NOTE: A wireless network made available by enabling Wi-Fi on Totalflow devices is
for the purpose of local access by hosts only. The wireless network does not support device-to-
device connections carrying critical real-time measurement data.
IMPORTANT NOTE: For additional information on Wi-Fi configuration parameters or connection
procedures, refer to the Networking Communication Guide listed in the
IMPORTANT NOTE: TERMINOLOGY: The term "network" in this section refers to a wireless
network. In older Totalflow documentation, the term "network" has been used to describe an
Ethernet network. With Wi-Fi support introduced in newer devices, the term applies to either an
Ethernet or a Wi-Fi network. Either type of network will be clearly indicated in the text and
diagrams.
The term "connection" in this section refers to the wireless link established between a wireless
client and an advertised wireless network. The term is not used to refer to a physical connection
as with Ethernet. Nodes on a wireless network can establish logical TCP connections with each
other on the same wireless network. Diagrams depict wireless networks or links with dotted
lines. Solid lines represent physical connections. Lines with arrows in different color represent
communication or data flows.
11.1

Connections supported by Wi-Fi modes

Table 11-1 shows the XIO Wi-Fi modes and the connections they support. Preferred configuration depends
on the number of XIOs, their location in the field, and the access requirements. Wi-Fi is a convenient way
to access XIOs without having to be in proximity with the device. When there are several XIOs, the
optimal configuration is to configure one as an access point and the rest as clients.
Table 11-1: Connections supported by Wi-Fi modes
Wi-Fi Mode Connection
Access Point [Host Wi-Fi client]-to-XIO
(AP)
Client XIO-to-[XIO Wi-Fi Access
Point]
XIO-to-[Totalflow Wi-Fi
Access point]
XIO-to-[Third-party Wi-Fi
Access Point]
192 | XIO USER MANUAL | 2106424MNAA
wireless access by Wi-Fi clients. It can also connect to a Wi-Fi access point as a
®
Description
Point-to-point connection from a wireless client to XIO.
Wireless client joins the network advertised by the XIO.
Use when there is only one XIO and there are no other
Totalflow devices that can support Wi-Fi Access Point
functionality.
XIO and other Wi-Fi clients join wireless network advertised
by another XIO configured as an Access Point
Wi-Fi clients can connect to the XIO over that network.
XIO and other Wi-Fi clients join wireless network advertised
by a Totalflow device configured as an Access Point.
Wi-Fi clients can connect to the XIO over that network.
XIO joins wireless network advertised by a third-party access
point.
Wi-Fi clients can connect to the XIO over that network.
Additional information.