| 摘要 |
PROBLEM TO BE SOLVED: To automatically and smoothly perform the switching of an active side and a standby side in an analog signal output device constituted of the active side and the standby side.SOLUTION: In an analog signal output device including analog signal output modules 10 and 20 constituted of an active side and a standby side for converting an output instruction value consisting of a digital signal from an output value instruction device 100 into an analog signal, when a pulse detection part 28 detects abnormality information, an analog signal output module 10 at the active side gradually decreases an analog value until the analog value becomes 0, and an analog signal output module 20 at the standby side calculates a differential value between the digital value and the output instruction value, and converts the differential value by a D/A converter 22 in the analog signal output module 20 at the standby side, and outputs the analog value.SELECTED DRAWING: Figure 1 |
