Siemens Multi Panel MP270 SIMATIC HMI Equipment Manual page 51

Each line represents an operand. The following table illustrates the significance of
the individual columns and buttons.
Column/Button
Connection
Type, DB number, Offset, Bit
Data type, Format
Status value
Force value
Operation
MP270 Equipment Manual
Release 01/99
Select the PLC whose address area is to be displayed
and/or modified.
Specify the address in this column.
This column is used to change the format of the output.
The value read by the MP270 from the PLC is displayed in
this column.
The value to be written from the MP270 to the PLC is
displayed in this column.
This button is used to update the display in the column
Status value .
The labeling on the button changes when it is pressed.
From this moment, none of the input fields can be
operated until the button is pressed again, thus stopping
the updating process.
This button is used to apply the new value specified in the
column Force value . The value is then written to the PLC.
Operate button Write.
Operate button Read.
Select first field in current line.
Select last field in current line.
Select first field in current column.
Select last field in current column.
Increase width of current column.
Reduce width of current column.
Delete current line.
Operating Special Screen Objects
Significance
5-15