Festo FB13 - Cable Termination

3.3.1 Cable termination
PLEASE NOTE
A cable termination is required at both ends of
the bus cable.
This also applies if the module or the com-
munication processor is at the beginning of the
bus cable.
Recommendation:
If the CP system is at the end of the fieldbus
system, a cable termination is required. Use the
Sub-D plug from Festo (part no. 18529) for this
purpose. A suitable RC network has already
been fitted into the housing of the Festo-sub-D
plug. The cable termination must be switched
manually.
Pin 6 Power supply
Pin 3 RxD/TxD-P
Pin 8 RxD/TxD-N
Pin 5 DGND
Fig. 3/18: Termination for cable A
Pin 6
390 Ω
Pin 5
Pin 8
Pin 3
390 Ω
220 Ω
VIFB13 - 03/05 3. Installation
9701 NH 3-31