ST_PortAddr

The structure ST_PortAddr contains EtherCAT topology information for EtherCAT slave device. EtherCAT slave devices typically have 2 to 4 ports.

TYPE ST_PortAddr:
STRUCT
    portA : UINT;
    portB : UINT;
    portC : UINT;
    portD : UINT;
END_STRUCT
END_TYPE

Name

Type

Description

portA 

UINT

Address of the previous EtherCAT slave at port A of the current EtherCAT slave

portB 

UINT

Address of the optional subsequent EtherCAT slave at port B of the current EtherCAT slave

portC 

UINT

Address of the optional subsequent EtherCAT slave at port C of the current EtherCAT slave

portD 

UINT

Address of the optional subsequent EtherCAT slave at port D of the current EtherCAT slave