Festo SFC-LAC CO Series, Manual, Page: 70 / 328

3. Installation
3−24
Festo P.BE−SFC−LAC−CO−EN en 0708NH
3.8 Bus termination with terminating resistors
Note
If the SFC−LAC is at the beginning or end of the field bus
segment, a bus termination will be required.
·
Always use a bus termination at both ends of the
fieldbus.
If you are using T−adapters, install the terminating resistor at
the unused output of the T−adapter.
Recommendation:
Fit a terminating resistor in the Festo field bus plug for the
bus termination.
1
Protective cap
2
Resistor for bus
termination
(120, 0.25 W)
V+
GND
H L
SLD
V+
GND
H L
SLD
V+
GN
D
H L
SLD
1 2
Fig.3/6: Bus termination with resistor in field bus plug FBS−SUB−9−BU−2x5POL−B
Field bus plug FBS−SUB−9−WS−CO−K (IP20) has an integrated
switchable terminating resistor.
Install a terminating resistor using the adapters
If the SFC−LAC you are connecting is at the end of the field
bus, you must install a terminating resistor (120 , 0.25 W) in
the field bus socket:
·
Connect the terminating resistor between the cores for
CAN_H and CAN_L.