8
M
MF
FC
C T
Te
errm
miin
na
alls
s
B
B-
C
C-
D
D-
P
PR
RO
OF
FIIB
BU
US
S D
De
es
siig
gn
na
attiio
on
ns
s
T
+B
-A
-T
+B
-A
Termination
positive
TxD+/RxD+
second connection
TxD-/RxD-
Second connection
Termination
negative
TxD+/RxD+
first connection
TxD-/RxD-
first connection
B
B-
D
C
D-
C-
I
I
I
I
+5V
R2
R1
R1
I
= 110nH
R1 = 390
R2 = 220
3
B
B-
D
C
D-
C-
I
I
I
I
+5V
R2
R1
R1
I
= 110nH
R1 = 390
R2 = 220
2
1
External connection PROFIBUS DP device at low datarates connected with spur. (Spurs are
only allowed at low data rates)
2
External connection PROFIBUS DP last device, internal bus termination is active.
3
External connections PROFIBUS DP device in trunk.
Please also refer to publication: “
Installation Guidelines for PROFIBUS DP/FMS” (PNO Order
Number 2.112/2.111)
