User Guide

FS-8700-113 X30 Profibus DP Slave Driver Manual  Page 5 of 14 
FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com 
Tel: (408) 262-2299 Fax: (408) 262-9042 Toll_Free: 888-509-1970  email: support@fieldServer.com 
3.  Hardware Connections 
The  FieldServer  is  connected  to  the  Profibus  network  as  shown  in  the  connection  drawing 
below. 
Housing
1
2
3
4
5
6
7
8
9
Shield
Not connected
Not connected
B-Line
RTS
GND BUS
+5 V BUS
Not connected
A-Line
Not connected
Connected to PE
-
-
Positive RxD/TxD according to RS 485 specification
Request To Send*
Isolated GND from RS 485 side*
Isolated +5 V from RS 485 side*
-
Negative RxD/TxD according to RS 485 specification
-
NamePin Description
Profibus DB9 connector
Network termination switches
Profibus Address switches
Profibus Status LEDs
Profibus connector pinouts
* +5V BUS and GND BUS are used for bus termination. Some devices, like optical transceivers 
(RS485 to fibre optics) might require external power supply from these pins. RTS is used in some 
equipment to determine the direction of transmission. In normal applications only A-Line, B-Line 
and Shield are used.
3.1.  Hardware Connection Tips / Hints 
Use the recommended network cable and terminators as specified by the Profibus network 
organization and/or the manufacturer of your network equipment. 










