Siemens simatic c7-621 Guide

Displaying and Entering Values in Screens 04/99
38 Getting Started with C7-621-AS-i
The following diagram shows the connection between the value entered, the control program and the
current number of parcels counted.
789
456
123
.0
+
/
-
ENTER
3





Parcels
DW contents = variable value
3
DBW0
01
DBW2
DB46
max.number
Screen: Parcels_1
==3
Control pro
g
ram
:STL
L DB46.DBW 0
T DB46.DBW 2
F1 F2 F3
F4
F5
SF DC5V
FRCE
RUN
STOP
123
789
6
45
0
SIMATIC C7-621
ENTER
ESC
SHIFT
+/-
 The values of the input are stored in the data interface (DB46).
 The control program evaluates the current entries and updates the data in the interface for the output.
 The C7-OP independently reads all values from the interface and updates its display.
Linking and branching between screens via softkeys
So that you can also call the second screen on the C7, you must configure the change from the start
screen Start_Sys1 to the system screen Parcels_1 and back with ProTool/Lite. You must also be
able to navigate in the system screen a screen branch from the first screen entry to the second screen
entry and back.
To do this you assign the ‘Select Screen’ function to a softkey in both screens. These softkeys are used
to change the screen. In the system screen you assign the ‘Navigation’ function to a softkey in both
screen entries.
 Open the screen Start_Sys1 and select the Softkey F5 . The dialog boxes Softkey-F5 and Select
Object
appear.
 In the dialog box Select Objekt choose the function Select Screen from the Screens. A short
description of the function is displayed.

Siemens simatic c7-621 Specifications

General

Brand	Siemens
Model	simatic c7-621
Category	Control Systems
Language	English