Technical data

Appendix
27.6 Sample Programs
Programming with STEP 7
Manual, 05/2010, A5E02789666-01 653
Network 13 Interlocks for drain valve
A "EMER_STOP_off"
A "Tank_not_empty"
AN "Agitator"
= "Enable_Valve
Network 14 Drain valve control
A "Drain_open"
A #Enable_Valve
= #Open_Drain
A(
O "Drain_closed"
ON #Enable_Valve
)
= #Close_Drain
CALL "Valve_block"
Open :=#Open_Drain
Close :=#Close_Drain
Dsp_Open :="Drain_open_disp"
Dsp_Closed :="Drain_closed_disp"
Valve :="Drain"
Network 15 Tank level display
AN "Tank_below_max"
= "Tank_max_disp"
AN "Tank_above_min"
= "Tank_min_disp"
AN "Tank_not_empty"
= "Tank_empty_disp"