| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device for a forklift truck for correcting the voltage of an analog signal without misrecognizing the analog signal even when current leak occurs in the analog signal transferred between system mounted in the forklift truck. SOLUTION: When a key switch is turned on (S131), a pseudo signal having a reference voltage value Vas is transmitted for one second from a transmission side control circuit to a reception side control circuit (S132). In the reception side control circuit, an A/D converter calculates a reception voltage value Vbf for the pseudo signal (S133). If the reception voltage value Vbf for the pseudo signal is in a given range (S134), a reception side CPU sets the reception voltage value Vbf for the pseudo signal as a reference voltage value Vbs (S135) and divides a reception voltage value Vbg for an analog signal by the ratio (Vbf/Vas) of the reception voltage value Vbf for the pseudo signal to the reference voltage value Vas for the transmission side control circuit to correct the reception voltage value Vbg for the analog signal (S136).
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