送信部状態診断装置および方法ならびにフィールド機器

摘要

Problem to be solved: to diagnose the transmission part of the communication circuit at low cost.A communication control section 11 and a diagnostic section 13 are provided as processing functions of the CPU. The diagnostic section 13 monitors the level of the transmission signal from the transmitter section 21 of the communication circuit 2, and diagnoses the normal \/ abnormal state of the transmitter section 21 of the communication circuit 2 based on the change in the level of the transmission signal when the communication control section 11 changes the transmitting section 21 from the non communication state to the communication state.Diagram