If you change any necessary items and click the [OK] button, the variable will be declared in the
declaration section.
Example: When the variable name of a contact is entered as bV
ar0 in an LD program
■
Address
In the Address field, you can specify the address of input data or output data for the GM1
controller or expansion unit. In such a case, the variable assigned to the input data or output
data corresponding to the entered address is declared.
■
Flag
If you select the CONST
ANT, RETAIN, and PERSISTENT check boxes in the Flag section, you
can set variable attributes.
CONSTANT
Declares the variable as a constant. Enter a default value.
RETAIN
Declares the variable as a retain variable. For retain variables, values are not reset even if
warm reset is performed. For details on warm reset, refer to "9.5.1 Reset Warm, Reset Cold,
and Reset Origin".
PERSISTENT
Declares the variable as a persistent variable. To declare a persistent variable, you must also
select the RETAIN check box. For persistent variables, values are not reset even if cold reset
or warm reset is performed.For details on cold reset or warm reset, refer to "9.5.1 Reset
Warm, Reset Cold, and Reset Origin".
6.2 Program Creation Window
6-6 WUME-GM1RTXOP-01
To Next Page
Loading...
