IFM ecomat 100 R 360 Series, System Manual

Page: 132 / 166

page 132
Function
TDM_READ_INTERN
Library TDM.LIB
Function symbol
Purpose The function reads an internal tdm R 360 variable.
Parameter Function inputs
Function outputs
Description
As opposed to the variables which are processed and
generated in the controller as target and preset values and are
automatically updated by the operating system of the units, the
internal tdm variables (e.g. clock or values saved in the tdm R
360) cannot be 'automatically' read and written.
Just like any other variable an internal variable has to be
identified to TDM_CONFIG of the application software. The
following read process is executed once by calling the function
TDM_READ_INTERN. The function input ENABLE can block
the execution.
HANDLE is allocated the defined number of the internal variable
from the tdm R 360. A handle number must only be allocated
once in the tdm R 360 as well as in the application software.
RESULT = TRUE shows if the handle stated when calling the
function has been found.
The programmer himself has to ensure the administration of
internal data in the controller by means of suitable software
routines. A changed internal variable is not automatically
transferred to the controller, but only when called for via
TDM_READ_INTERN.
Name Data type Description
ENABLE BOOL TRUE: function is executed
FALSE: function is not executed
HANDLE WORD designation (number) of the internal variable
in the tdm R 360
Name Data type Description
RESULT BOOL TRUE: HANDLE was found (was defined)