Intelligent Technologies (IT.) D77A I/O Module Products
Analog Output Modules
Figure 21 illustrates the basic signal processing operation. Digital data from external sources are extracted from the QCPort and transferred to the controller’s central processor unit (CPU). The digital data from the CPU is transferred to the digital-to-analog converters (DAC). The DAC system converts the digital values to linear signals and provides them to the output terminals.
QC Port | CPU | DAC | V0 |
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| I0 |
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| DAC | V1 |
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| I1 |
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| C0 |
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| C1 |
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| +24V |
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| P.S. |
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| G |
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Figure 21: Analog Output Module Operation
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