The answer is B, “+24 VDC.” A sinking digital input on a PLC I/O card is looking for positive 24 VDC at the input terminal. This configuration is most commonly used because +24 VDC at the digital ...
The first and second color bands are used to indicate a two-digit value. The third band indicates the multiplier. The fourth band indicates the tolerance. For example, if the first two bands are black ...
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