Siemens SINUMERIK 840D sl Commissioning Manual page 111

08/2005
FOC - Focus
The input focus (current active I/O field) in a screen form is controlled by the FOC
function. FOC can be read and written.
FOC
When FOC is read, the result is the name of the focused variable.
IF FOC == "Var1"
REG[1] = Var1
ELSE
REG[1] = Var2
ENDIF
When FOC is written, it is possible to assign either a string or a numerical value. A
string is interpreted as a variable name and a numerical value as a variable index.
The FOC function may not be initiated as a result of navigation event. The cursor
may only be moved in softkey press blocks, change blocks, ...
The response to cursor left, right, up, down as well as PGUP, PGDN are
permanently pre-defined.
Note
The FOC function cannot be applied to variables with input mode wr = 0 and
wr = 4 or to Help variables.
FOC = "Var1"
FOC = 3
Entry
The ENTRY variable can be used to check by what method a screen form has
been called.
ENTRY
The result of the scan can be:
0 = No programming support
1 = Programming support (screen form called under programming)
2 = Programming support + default from previous form screen
(Subscreen form)
3 = Programming support + recompilation
4 = Programming support + recompilation with generated
comments and # characters
5 = Programming support + recompilation with generated comments,
but no # characters
The ENTRY variable is a read only variable.
IF ENTRY == 0
DLGL("The screen form was not called under Programming")
ELSE
DLGL("The screen form was called under Programming")
ENDIF
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D HMI Installation and Start-Up Guide (IAM) – 08/2005 Edition
Expanding the Operator Interface (BE1)
;Read focus
;Input focus is assigned to variable 1
;Input focus is assigned to the 3rd screen
;form element with WR ≥ 2.
3 Syntax
BE1/3-105