Practical Data Acquisition For Instrumentation And Control Systems ~upd~ Now

| Type | Typical Use | Pros | Cons | |------|-------------|------|------| | PLC analog I/O module | Factory automation | Rugged, hot-swappable, certified | Lower resolution (12-16 bit) | | Standalone DAQ (e.g., NI CompactDAQ, Advantech ADAM) | Remote monitoring | Ethernet/Modbus, isolated | Slower update rate | | PC-based PCIe/PXI | Lab, test cell | High speed (1 MS/s+), high resolution (24 bit) | Not industrial rated | | Distributed I/O (IO-Link, remote I/O) | Decentralized plants | Reduced wiring, diagnostics | Needs configuration |

Isolation is non-negotiable for practical data acquisition. It breaks the electrical path between the field sensor and the control system, protecting hardware from voltage spikes and eliminating ground loops. | Type | Typical Use | Pros |