GE GFK-2193A - Manual (Page 9)

GFK-2121A Chapter 1 Overview and Specifications 1-5
1
Figure 1-2. Repeaters and bus termination
Network Connectors
PROFIBUS connections are created with a 9 pin sub-D connector. A minimum connection
consists of a shielded twisted-pair cable (shield to pin 1 and twisted-pair wires to pins 3
and 8) with terminating connections in the appropriate bus plugs. The pin to signal
conventions are described below.
Pin-out Listing for the PROFIBUS Bus Plug Connector
Pin No. Signal Designation
1 Shield Shield / Protective Ground
2 M24 Ground / Common of the 24V output voltage
3 RxD/TxD-P Receive data / transmission data plus
4 CNTR-P Control signal for repeaters (direction control)
5 DGND Data transmission potential (ground to 5V)
6 VP Supply voltage of the terminating resistance (+ 5V)
7 P24 Output voltage (+ 24V)
8 RxD/TxD-N Receive data / transmission data negative
9 CNTR-N Control signal for repeaters (direction control)
Note: For information on network segment length, network connectors and network
termination, and network baud rate, refer to Chapter 2, “Installation.”
To additional
participants
Link Segment
(No Participants)
Participant Participant
Participant Participant
Participant
Participant
Branch
Segment
Repeater
Connecting
Segments
Remote
Repeate
Remote
Repeater
Termination
Termination