Technology modules
Page 155
12.1.3
Pin assignment and cable specifications
12.1.3.1
Pin assignment
9-pin DSUB connector, female
Table 53:
Pin assignment: PROFIBUS-DP interface
Pin no.
Name
Values
Specification
1
Shield
-
Cable shield
6
+5V
+ 5 V
+5 V – output (floating)
1)
2
-
-
Not used
7
-
-
Not used
3
RxD / TxD-P
Receive/transmit data B-line
8
RxD / TxD-N
Receive/transmit data A-line
4
RTS / LWL
Request to Send
2)
9
-
-
Not used
5
GND5V
0 V
Reference potential GND 5 V
1)
1)
Can be used for external bus termination or to supply the transmitters/receivers of an external optical waveguide module.
2)
The signal is optional. It is used for directional control in the case of an external optical waveguide module.
12.1.3.2
Mating connector
9-pin DSUB connector, for example Erbic MAX PROFIBUS IDC switch, made by ERNI
12.1.3.3
Cable type and configuration
The cable names that are stated refer to cables made by Lapp. They have proved to be reliable and are successfully used in
many applications. However, it is also possible to use comparable cables from other manufacturers, for example Lütze or
Helukabel.
LAPP KABEL UNITRONIC BUS L2/FIP FC; 1 x 2 x 0.64;
∅
7.8 mm, with tinned CU overall shielding for quick-connect
applications with IDC connectors
For highly flexible applications:
LAPP KABEL UNITRONIC BUS FD P L2/FIP; 1 x 2 x 0.64;
∅
8 mm, with tinned CU overall shielding for highly flexible use
in drag chains
