| 摘要 |
PROBLEM TO BE SOLVED: To add time to RAS information of a programmable controller. SOLUTION: The programmable controller 1 is provided with the presence/ absence discrimination means 3 of a calendar information generation part (calendar IC, for example), the selection switch means 4 of a time acquirement method, a time information input means 51 and a clock means 52 clocking time from the power supply time of the programmable controller 1. The programmable controller 1 generates time from clock information of the clock means 52, writes it in a generation time storage area 64 and write it in an external time input storage area 63 through a time information input means 51. The programmable controller 1 reads time information of the generation time storage area 64 or the external time input storage area 63 in accordance with the setting of the selection switch means 4 of the time acquirement method when the calendar information generation part (calendar IC, for example) does not exist, and write time information into the RAS storage area 62. |
