Bus Termination With Terminating Resistors - Festo MSE6-E2M Original Instructions Manual

4 Commissioning
DIL switches
Switch position
OFF
ON
Tab. 4.4 Meaning of switch position
The plug connector FBS-SUB-9-GS-DP-B switches the continuing fieldbus cable off when
the bus termination is switched.
• Note the type designation of the plug connector.
4.3.3

Bus termination with terminating resistors

If the MSE6-E2M with bus node CPX-FB13 is at the beginning or end of the fieldbus seg­
ment, a terminating resistor is required.
• Fit a terminating resistor to both ends of a bus segment.
Use the Festo plug connector for the bus termination. A suitable resistor network is integ­
rated in the housing of this plug connector.
Received/transmitted data P
(Data transmission line B)
Received/transmitted data N
(Data transmission line A)
Fig. 4.5 Circuit diagram for bus termination network for cable type A as per EN 50170
(switch in Festo plug connector in ON position)
Festo – MSE6-E2M-SY-EN – 1703d – English
Bus termination
Not switched
Switched
Pin 6: Supply voltage
120 nH
Pin 3
120 nH
Pin 8
Pin 5: Data reference potential
The continuing fieldbus cable
Switched on
Switched off
390 W
220 W
390 W
23