Secure communication device, secure communication system, secure communication method, and secure communication program

摘要

The safety communication device requests the safety layer parameter acquisition unit (125) that acquires the reception bit rate of the safety layer data received per unit time as the upper limit of the error occurrence probability per bit during data communication in the unsafe network. A threshold setting unit (127) that sets the required error rate as the upper limit of the bit error rate of the safety layer data received per unit time based on the required value for the bit error rate to be performed and the received bit rate, and the unit. It is provided with a safety monitoring control unit (124) that compares the bit error rate of the safety layer data received within the time with the required error rate and performs safety control based on the comparison result.