3.2
Operating and access levels
3.2.1
Operating levels
The SEZ220 signal converter has two basic operating levels: They are:
Two operating levels
•
Info level
•
Main menu
The following table contains their properties and identification.
Designation
Properties
Identification
Info level
Use this level to display key plant data as INFO
pages.
Main menu
This level is structured as a menu.
It allows you to read data points and/or change
their values.
None
The two operating levels are always available regardless of the active access level.
Note
The term "data point" is used as a general term for:
Term "data point"
•
Real data points with a physical connection to the plant, and
•
Fictitious data points without direct connection to the plant (defined solely in
software, e.g. setpoints).
All data points are set and read via operating lines on the menu structure. The
operating elements allow you to select, display and set data points (setting
parameter).
The LCD shows all menus as clear text.
Change back and forth between the two operating levels as follows:
Change between
operating levels
•
From Info level to main menu:
Press
OK
.
•
From main menu to Info level:
Press
ESC
.
The following example shows the above information. The table shows an Info page
for the user (top) and a main menu page (bottom):
Example for Info page
and main menu
Display
Explanation
5146Z07
Info level:
•
Change between Info pages using the
navigation buttons.
•
Number and presentation of Info pages depend
on the selected application.
SET 1
°C
SERVICE
PARA
MODE
5146Z08
Main menu:
•
Change between different data points using the
navigation buttons, here e.g. to MINVAL1.
•
Change values:
1. Press
OK
.
2. Change the value with the navigation
buttons, here e.g. to 0.0 °C.
3. Press
OK
to assume the value.
12 / 46
Siemens
SEZ220 signal converter
CE1P5146en
Building Technologies
Operation
02.06.2008
