Function - Festo VIFB-02- Series Manual

VIFB1 – 02

Function

Field bus module
of controller (PLC)
Field bus
Operating
voltage
connection
Pneumatic
interface
(see also
opposite)
Field bus participant
Fig. 3/6: Function summary of valve terminal/valve sensor terminal
3-8
> IFB1-02_BES_V_018474g1_1996-04N - Restored Document - 2011-12-15 <
3. Technical description
The valve terminal or valve sensor terminal as a
system with decentralized outputs or decentrali-
zed inputs/outputs should be placed in the im-
mediate vicinity of the processing unit. Connec-
tion to the control level is made via the field bus
which operates on the master-slave principle.
The field bus module of the control system
functions here as master, and the valve termi-
nal/valve sensor terminal (field bus participants)
as slave. The field bus module transmits cyclic
telegrams to the valve terminal/valve sensor ter-
minal. This receives and processes the data
transmitted and sends a reply telegram to the
field bus module.
Valve coupling unit or
Valve-sensor coupling unit
Field bus
node
Field
bus
interface
Valve
Connection block
Actuator
9604