Parker Hannifin S.p.A.  - S.B.C. Division                                               HPD N User’s Manual 
 
103
 
17. Can Bus Connector 
 
The Can bus connector is a 9-pin male connector.
 
 
CAN BUS CONNECTOR 
N. Pin  Signal  Description  
1 n.c.   
2  CAN_L  Line of communication low 
3 CAN_GND  Ground  
4 n.c.   
5 CAN_SHLD  Shield  
6 GND  Ground  
7  CAN_H  Line of communication high 
8 n.c.   
9 n.c.   
 
Two application layers are available for the Can interface. 
 
The first is SBCCAN, which enables master/slave communication, as well as slave/slave 
communication. It includes synchronism telegrams, transmissions to slave groups, and cyclic, 
acyclic, and interrupt transmissions. There is also a subset of SBCCAN which allows for simple 
data exchange between SBC drives (IDC inter-drive communication). 
 
The second is DeviceNet. With the DeviceNet interface implemented, the EC-4 is seen by the master 
as a remote I/O module with 256 inputs and 256 outputs. Obviously, the I/Os are virtual. 
Interpretation of the meaning of the I/Os will be defined by the program installed on the EC-4 
board.