| 摘要 |
PROBLEM TO BE SOLVED: To accurately determine whether a safety function part having a safety function of a desired standard is correctly mounted in a safety device having a configuration in which a basic control function and the safety function are separated.SOLUTION: The safety device includes a controller and the safety function part. The controller includes: a means which selects a category for identifying a safety function part which should be connected; a means which transmits a reference signal to the safety function part; a means which determines, based on a category identification signal being a signal which is returned from the safety function part and identifies a category, whether the category of the connected safety function part coincides with the selected category or not and outputs a determination result; and a means which, in the event that the determination result shows that the category of the connected safety function part and the selected category do not coincide, prohibits the output of a control signal. The safety function part includes a means which, based on the reference signal transmitted from the controller, generates the category identification signal in accordance with a process appropriate to the category of the safety function part and returns this signal to the controller. |
