The ABB CM‑PNIO (SAPR) is a high-performance PROFINET I/O communication module designed for the AC PLC system. It combines a dual-port Ethernet switch with real‑time PROFINET IO RT functionality, enabling seamless and efficient connectability between PLCs and field devices in industrial automation environments.

Key Features:

Model / Part No.: CM‑PNIO (SAPR)
Protocol Support: PROFINET IO RT controller for cyclic real‑time data, DCP, LLDP, SNMP, and diagnostic/alarm handling
Ethernet Ports: Dual RJ‑ ports with built‑in Ethernet switch, supporting  Mbps full‑duplex
Performance: Up to remote I/O stations; I/O data up to  bytes; min cycle time  ms
Indicators: LEDs for PWR, RDY, RUN, STA, and STA statuses
Power Consumption: ~ mA from the upstream  V DC terminal base
Mechanical Specs: Approx.  g, × ×  mm, IP housing, DIN‑rail mounting
Environmental Range: – °C horizontal, – °C vertical; storage –– °C; % RH non-condensing

ABB – CM579-PNIO – PROFINET I/O RT Controller (1SAP170901R0001)