EtherCAT-based network system and operation method thereof

摘要

An EtherCAT-based network system configured to change a PDO list set, and an operation method thereof are provided, the system including at least one or more slave devices, a master device configured to connect and operate the slave device in response to an operating transmission PDO list or an operating reception PDO list provided from outside, and a host computer configured to extract the operating transmission PDO list or the operating reception PDO list from information file of the slave device and provide to the master device, wherein the information file includes at least one of identity information of the slave device, PDO list item changeable information, at least one or more transmission PDO list, and at least one or more reception PDO list.

主权项

1. An EtherCAT-based network system comprising:
one or more slave devices, wherein the one or more slave devices are host computers; a master device configured to connect to and operate the slave devices in response to an operating transmission PDO (Process Data Object) list or an operating reception PDO list, wherein the master device is a host computer; and a host computer configured to extract the operating transmission PDO list or the operating reception PDO list from an information file of the slave devices and provide the extracted list to the master device, wherein the information file includes identity information of the slave devices, PDO list item changeable information, one or more transmission PDO lists, and one or more reception PDO lists, wherein the transmission PDO list and the reception PDO list include an essential PDO item, an auxiliary PDO item, or a selection PDO item, and wherein the host computer is further configured to retrieve the transmission PDO list or the reception PDO list; determine whether the essential PDO item is present in the retrieved PDO list; determine the PDO item changeable information when the essential PDO item is present; select a PDO list having a largest number of auxiliary PDO items; determine if a number of the selected PDO list is one; and extract the selected PDO list as the operating PDO list when the number of the selected PDO list is one.