The module is designed to receive discrete sensor signals and contains eight single-wire discrete input channels with a common "minus" (positive logic) and 24 VDC field power supply. All channels are isolated from the system by optical isolation.
Input signal bounce is eliminated by software. Two channels of the module (DI1 and DI3) can be used as incremental cyclic pulse counters with a repetition rate of up to 300 Hz.
The counting is performed on the leading edge of the signal.
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