Endress+Hauser Fieldgate FXA320, Operating Instructions Manual

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3 Function and System Design Fieldgate FXA320
13 Hauser
3.2 Communication interface
Fieldgate is equipped with an Ethernet 10BaseT interface, an analog modem or a GSM modem.
3.2.1 Ethernet 10BaseT
Fieldgate with 10BaseT Ethernet interface is connected to the local network via a hub or switch
using a standard cable with RJ45 plug connector. As Fieldgate is constantly available in the network,
it is accessed with a standard web browser. Several PCs can access Fieldgate simultaneously.
Fig. 3-3: Connecting Fieldgate to Ethernet
3.2.2 Telephone network
Fieldgate is connected to the telephone network via an RJ11 (PSTN) plug connector. This form of
communication is always a point-to-point connection and only one PC can communicate with the
device at any one time. In this configuration, the Fieldgate has to be selected before each access, so
that it is ready for online operation. The Windows internal telecommunications network can be
used for dialling. After this, the Fieldgate can be accessed with a standard web browser.
Fieldgate can also dial itself into a central server, e.g. in order to deliver periodic measured values.
If Fieldgate dials into the Internet permanently via an Internet Service Provider, it is possible for
several users to access the Fieldgate simultaneously. In addition the user does not require a modem
as a receiver at the work place.
Fig. 3-4: Connecting Fieldgate to a public telephone network
RJ 45
Fieldgate FXA 320
Ethernet
4...20 mA Switch or pulse
TAE
RJ 11
Fieldgate
FXA 320
- …
PSTN (Public Switched Telephone Network)
- data telecommunication connection
Web browser
dial-up:
- …
WWW WWW
4...20 mA Switch or pulse