摘要 |
A first mode in which to output analog electricity quantities of objects one by one independently to an A/D converter, a second mode in which to output none of the analog electricity quantities of the objects, a third mode in which to output none of the analog electricity quantities of the objects and cause the output to the A/D converter to be resistor, and a fourth mode in which to output to the A/D converter a plurality of the analog electricity quantities of the objects at the same time, are caused to be generated, thus acquiring the A/D conversion values of the objects individually when in the first mode, and detecting an anomaly of the A/D converter itself or a device connected to the A/D converter when in the second mode to the fourth mode. |