Festo PROFIBUD-DP, Elektronics Manual

Page: 38 / 154

1. Installation CPV−DI02 and CPV−CS02
1−24
Festo P.BE−CPV−DI02−EN en 0704NH
1 . 4 Bus termination w ith termination resistors (CPV −DI 02 )
Note
If the valve terminal is at the beginning or the end of the
field bus system, 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)
390
390
220
Pin 6: Supply voltage
Pin 5: Data reference potential
Pin 3
Pin 8
120 nH
120 nH
Fig.1/7: Circuit diagram for bus termination network
(switch in Festo field bus plug set to ON)
(PROFIBUS−DP: for cable type A as per EN 50170)