Festo VTEM - Page 73

Festo — VTEM — 2021-05f
Function
73
Conventional valve type Switching
status
Replacement symbol
1)
Byte 0 Dec.
3/2 O + 3/2 G (4) (2) Bit 7 Bit 6
Initial position: retracted
((2) pressurised, (4) exhausted)
E B 0 0 0
B B 0 1 1
E E 1 0 2
B E 1 1 3
1) The symbol in this column replaces the full bridge in the circuit diagram for the valve VEVM and therefore represents the function in
the switched status of the valve with corresponding setpoint value (right columns).
Tab. 89: Valve type 3/2 O + 3/2 G
Conventional valve type Switching
status
Replacement symbol
1)
Byte 0 Dec.
4/2 bistable (4) (2) Bit 7 Bit 6
Initial position: when the valve
type is selected for the first
time, (2) and (4) are blocked.
If a switch is made from
a different valve type to
4/2 bistable, the most recent
switching position remains
active.
Hold status 0 0 0
E B 0 1 1
B E 1 0 2
Hold status 1 1 3
1) The symbol in this column replaces the full bridge in the circuit diagram for the valve VEVM and therefore represents the function in
the switched status of the valve with corresponding setpoint value (right columns).
Tab. 90: Valve type 4/2 bistable