Can communication apparatus supporting modbus protocol and operation method thereof
AssigneeLG Energy Solution, Ltd.
InventorsHyun Jin KIM, Seung Min LEE, Chun Soo PARK, Ho Seok KANG
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Abstract
A Controller Area Network (CAN) communication apparatus for supporting a MODBUS protocol according to an embodiment includes a communication unit for receiving or transmitting a MODBUS data frame from or to a device and a controller for converting the MODBUS data frame into a CAN data frame including identification information or converting the CAN data frame into a MODBUS data frame. A CAN communication system using the communication apparatus of the embodiment supports the MODBUS communication protocol for inter-device communication.
Claims17
A controller area network (CAN) CAN communication apparatus for supporting a MODBUS protocol, the apparatus comprising:
- a communication unit configured to receive a MODBUS data frame from a device;
- and
- a controller configured to convert the MODBUS data frame into a CAN data frame including identification information according to a transmission and reception type of the CAN data frame and an order of constructing data.
A controller area network (CAN) communication apparatus for supporting a MODBUS protocol, the apparatus comprising:
- a controller configured to:
- check sequence information of a CAN data frame transmitted through a CAN communication bus,
- initialize, in response to a sequence of the data frame being the first, a receive buffer and setting a receive flag based on information on a total number of frames,
- store, in response to the sequence of the CAN data frame being not the first, CAN message data of the CAN data frame while removing the receive flag corresponding to the sequence of the CAN data frame, and
- convert, in response to all the receive flags are removed, the stored CAN message data into a MODBUS data frame by sequentially mapping the CAN message data according to the sequence information;
- and
- a communication unit configured to transmit the MODBUS data frame to a device.
An operation method of a controller area network (CAN) communication apparatus supporting a MODBUS protocol, the method comprising:
- receiving a MODBUS data frame from a first device;
- and
- converting the MODBUS data frame into a CAN data frame including identification information according to a transmission and reception type of the CAN data frame and an order of constructing data.
Dependencies are inferred from the claim text.