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Slave, C Series PROFINET Slave Interface Module—The cRIO-PN-S connects NI programmable automation controllers (PACs) to PROFINET industrial networks as powerful slaves. The interface includes the NI‑PROFINET for CompactRIO driver for human machine interface (HMI) and supervisory control and data acquisition (SCADA) applications. You can perform PROFINET device automated test using these interfaces. The cRIO-PN-S is only compatible with CompactRIO systems.