Bus Connection With Terminating Resistors - Festo CPX-FB13 Manual

1. Installation
1.4

Bus connection with terminating resistors

1−24
Note
If the CPX terminal is at the beginning or end of the field
bus segment, a bus termination will be required.
Fit a bus termination to both ends of a bus segment.
·
Recommendation:
Use the ready−to−use field bus plugs from Festo for the bus
termination. A suitable resistor network is incorporated in the
housing of this plug (see Fig. 1/7).
Receive/send data P
(data cable B)
Receive/send data N
(data cable A)
Fig. 1/7: Circuit diagram for bus termination network for
cable type A as per EN 50170 (switch in Festo field
bus plug set to ON)
Pin 6: Supply voltage
120 nH
Pin 3
120 nH
Pin 8
Pin 5: Data reference potential
Festo P.BE−CPX−FB13−EN en 0811c
390
220
390