Ethernet Protocols; Http; Browser Connection - JUMO LOGOSCREEN nt Interface Description

6.1 HTTP

6.2 Browser connection

The advantage of an Ethernet connection compared with a serial connection
lies in the higher transmission rate and the company-wide accessibility.
In this case, the Logoscreen nt is configured as a slave, and handles the
incoming queries as a server through port 80. These queries could, for
instance, come from a PC with the setup software, PC evaluation software
(PCA) or PCA communications software (PCC).
The Logoscreen nt can also be accessed by a browser, using the HTTP
protocol. The URL required for this purpose is the IP address of the recorder.
This is used to access the HTML home page "index.htm", and from here it can
branch to the other HTML pages.
Using the setup program Edit ! Web server directories ! Web import, the
start page "index.htm" and other HTML pages can be downloaded to the
Logoscreen nt. 512 kB of memory are available for this purpose.
Three HTML process diagrams and three HTML batch pages are stored as
templates in the ex-factory instrument.
Device variables can be accessed by special tags in the HTML pages. Support
is provided in a Help window for the setup program, in which the device
variable can be selected and the corresponding HTML tag copied to the
clipboard.

6 Ethernet protocols

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