Siemens Simatic S7-200 CPU 210, Системное руководство, Страница: 37 / 140

2-15
S7-200 Programmable Controller, CPU 210
C79000-G7076-C235-01
2.8 Using the Status Chart
The Status Chart editor appears by default as a minimized window icon at the bottom of the
main window. To access the Status Chart, double-click the icon, or click the Restore or
Maximize button on the icon (in Windows 95).
You can use the Status Chart to read or write variables in your program. You cannot force
values in the PDS 210.
Reading and Writing Variables with the Status Chart
Figure 2-13 shows an example of a Status Chart. To read or write variables using the Status
Chart, follow these steps:
1. In the first cell in the Address column, enter the address or the symbol name of an
element from your program that you want to read or write, and press ENTER. Repeat this
step for all additional elements you want in the chart.
2. If the element is a bit (I, Q, or M, for example), the format is set as bit in the Format
column. If the element is a word, select the cell in the Format column and double-click or
press the SPACEBAR to cycle through the valid formats.
3. To view the current PLC value of the elements in your chart, click the Single Read
button or the Continuous Read button on the Status Chart.
You can click the Stop Read button to stop the updating of status.
4. To change a value, enter the new value in the Change Value to column and click the
Write button to write the value to the PDS 210.
Status Chart
Address Format
I0.0
Bit 2#0
I0.1
Bit 2#0
Q0.1
Bit 2#1
Change Value to
Q0.2
Bit 2#0
T0
Integer
+84
MW0
Integer 4400
1
Current PLC Value
To change a value,
enter new value here
and click the Write
button.
Press the spacebar or
double-click in the cell
to select valid format.
Figure 2-13 Example of a Status Chart
Editing Addresses
To edit an address cell, use the arrow keys or mouse to select the cell you want to edit.
S
If you begin typing, the field clears and the new characters are entered.
S
If you double-click the mouse or press F2, the field becomes highlighted and you can use
the arrow keys to move the editing cursor to the place you want to edit.
S
Clicking the right mouse button displays a menu of editing functions which are available
with the Status Chart editor.
Installing and Using the STEP 7-Micro/WIN Version 2.0 Software