Siemens SINUMERIK 840D sl Commissioning Manual page 720

Programming commands
6.3 Functions
Example
//M(Screen form1)
...
PRESS(HS1)
LM("SCREEN FORM2","CFI.COM",1, POSX, POSY, DIAMETER)
DLGL("Screen form2 ended")
END_PRESS
...
//END
//M(Screen form2)
...
PRESS(HS1)
EXIT(5, , CALCULATED_DIAMETER)
END_PRESS
...
//END
102
; Interrupt screen form1 and open screen
form2. Transfer variables POSX, POSY and
DIAMETER in doing this.
; After returning from screen form2, the
following text appears in the dialog line of
screen form1: Screen form2 ended.
; Exit screen form2 and return to screen
form1 in the line after LM. In doing this,
assign the value 5 to the variable POSX and
the value of the CALCULATED_DIAMETER variable
to the DIAMETER variable. The variable POSY
retains its current value.
SINUMERIK Integrate Run MyScreens (BE2)
Programming Manual, 03/2013, 6FC5397-1DP40-3BA1