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6 Connection and Wiring
6.2 Connector Pin Configuration (D-SUB9 Pin)
Pin No.
1
2
3
4
5
6
7
8
9
(*1)
Signal used when terminator resistors are connected.
6.3 Wiring
The terminal station of each segment on a communication line need be provided with terminator resistors. Use a
connector specifically designed for use with PROFIBUS which has built-in terminator resistors. Note: Terminator
resistors are arranged so as to apply: 220Ω between (+) and (-)、390Ω between 5V and (+), and 390Ω between
0V and (-).
RxD /TxD-P(3)
DGND(5)
RxD /TxD-
Connector Pin Configuration (D-SUB9 Pin) 6- 26
Table 6-1 Connector Pin Configuration
Name
Not assigned
Not assigned
RxD/TxD-P
Not assigned
DGND
(*1)
VP
(*1)
Not assigned
RxD/TxD-N
Not assigned
Station 1
VP(6)
N(8)
Protective
ground earth
Figure 6-6 Cable Routing
Data line
Data line
Figure 6-7 Bus Terminator Resistors
Received/transmitted data-P
Data ground earth (0V)
Voltage + (+5V)
Received/transmitted data-N
Station 2
RxD /TxD-P(3)
DGND(5)
VP(6)
RxD /TxD-N(8)
Shield
Protective
ground earth
VP(6)
390Ω
RxD /TxD-P(3)
220Ω
RxD /TxD-N(8)
390Ω
DGND(5)
Service
-
-
-
-
-
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