| 摘要 |
PROBLEM TO BE SOLVED: To avoid duplicate setting of station numbers in a local I/O station and a common I/O station when the station number of the I/O station is set. SOLUTION: Each programmable controller is expressed as 'PLCn', each I/O station is specified as 'I/O station number m', I/O stations as the common I/O stations to be controlled by plural programmable controllers and plural programmable controllers to control the common I/O stations are arranged in the same list, individual station numbers are set to each I/O station, furthermore, I/O stations as the local I/O stations to be controlled only by a certain programmable controller are arranged in a low-order list of the programmable controller to control the I/O stations and individual station numbers are set in them on an I/O setting picture. In this case, whether or not the newly set station numbers are already set is monitored and when they are already set, a fact that the station number is invalid is notified.
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