| 摘要 |
PROBLEM TO BE SOLVED: To provide a PLC system with improved operability.SOLUTION: A PLC system 30 includes: a PLC 32 for controlling the operation of a device; and a personal computer 34 that is connected to the PLC 32 via a communication line and is a maintenance device for maintaining the PLC 32. The PLC 32 has: information storage means for storing information relating to the operation state of the PLC 32, the information, as is, recognizable for a user; and applicable-PLC information storage means for storing, in an occurrence abnormality information storage zone 38a, applicable-PLC information applicable to a predetermined operation state of the PLC 32, from among information stored in the information storage means, when detecting a predetermined operation state of the PLC 32. The personal computer 34 includes: applicable-PLC information acquisition means for acquiring applicable-PLC information stored by the applicable-PLC information storage means; and information display means for displaying the applicable-PLC information acquired from the applicable-PLC information acquisition means. |
