Parameter setting method for PLC communication system

Claim 2

A parameter setting method for a PLC communication system, comprising: a transmission parameter setting step of setting a self-station identification number in a transmission mode, dividing transmitting data into a plurality of blocks if it exceeds a predetermined size, assigning block identification numbers to the divided blocks, respectively, and setting a size of a desired one of the divided blocks; a reception parameter setting step of setting a counterpart station identification number and a desired one of the block identification numbers in a reception mode, setting a common reception region and setting an individual reception region as needed; and a data transmitting/receiving step of reading said transmission and reception parameters whenever a user's program is completed after said transmission and reception parameters are set and performing data transmission and reception operations according to the read transmission and reception parameters.

Claim 3

A parameter setting method for a PLC communication system, as set forth in claim 1, wherein said transmission parameter setting step includes the steps of: setting the self-station identification number in the transmission mode; dividing the transmitting data into n blocks if it exceeds m bytes; assigning the block identification numbers to the divided n blocks, respectively; and setting a size of a desired one of the divided n blocks.

Claim 4

A parameter setting method for a PLC communication system, as set forth in claim 2, wherein the self-station identification number and the block identification number are appended in a header of the transmitting data in the transmission mode.

Claim 5

A parameter setting method for a PLC communication system, as set forth in claim 2, wherein the transmitting data has a maximum length of m bytes in the unit of block so that m*n-byte data transmission can be performed at the maximum over the entire communication stations, where n is the number of the communication stations.

Claim 6

A parameter setting method for a PLC communication system, as set forth in claim 1, wherein said reception parameter setting step includes the steps of: setting the counterpart station identification number and the desired block identification number in the reception mode; setting the common reception region after the desired block identification number is set; and setting the individual reception region after the common reception region is set.

Claim 7

A parameter setting method for a PLC communication system, as set forth in claim 1, wherein said data transmitting/receiving step includes the step of receiving data in the reception mode only when a station identification number and a block identification number of the received data are the same as those set in the reception parameter.

Claim 8

A parameter setting method for a PLC communication system, as set forth in claim 6, wherein said data receiving step includes the steps of: discriminating whether'the station identification number and the block identification number of the received data are the same as those set in the reception parameter; discriminating whether the common reception region is set in the reception parameter, if the station identification number and the block identification number of the received data are the same as those set in the reception parameter; receiving bytes of the received data corresponding to the common reception region if the common reception region is set in the reception parameter; discriminating whether the individual reception region is set in the reception parameter, after the bytes of the received data corresponding to the common reception region are received; receiving bytes of the received data corresponding to the individual reception region if the individual reception region is set in the reception parameter; discriminating whether the reception parameter is the last one, after the bytes of the received data corresponding to the individual reception region are received; and completing the data reception operation if the reception parameter is the last one.

Claim 9

A parameter setting method for a PLC communication system, as set forth in claim 7, wherein the common reception region is set to store a designated number of bytes of the received data into a memory location designated by a data pointer.

Claim 10

A parameter setting method for a PLC communication system, as set forth in claim 5 or claim 7, wherein the individual reception region is set to store a specified number of bytes of the received data beginning with a byte point designated by an individual region identification number.