| 摘要 |
PROBLEM TO BE SOLVED: To easily recognize communication content between PLCs without interrupting a protocol analyzer in a network for making a connection between the PLCs.SOLUTION: A program creation support device 100 is connected to a PLC 1a instead of connecting a protocol analyzer to a network for connecting the PLC 1a and a PLC 1b, and the program creation support device 100 is operated as the protocol analyzer or a debug device. The program creation support device 100 analyzes, by pattern matching, a frame structure of communication data transmitted and received between the PLC 1a and the PLC 1b, or between the PLC 1a and a device to be controlled, and displays the frame structure. As a result, communication content between the PLC and the PLC and between the PLC and the device to be controlled can easily be recognized without interrupting the protocol analyzer in the network for making a connection between the PLCs. |
