1SAP170901R0001 corresponds to the CM579-PNIO, a PROFINET IO RT controller communication module designed for the ABB AC500 PLC series. It enables the AC500 CPU to operate as a PROFINET IO master, facilitating real-time Ethernet communication with field devices such as distributed I/O, drives, HMI, and sensors. Featuring a compact DIN-rail form factor, integrated 2-port Ethernet switch, and industrial-grade EMC protection, it delivers high-speed, deterministic communication for factory and process automation applications requiring PROFINET connectivity.

1SAP170901R0001 is the full ABB part number. CM579 denotes the communication module series. PNIO stands for PROFINET IO protocol. 170901 refers to the base platform of the CM579 series, and R0001 indicates the hardware revision. This module is engineered exclusively for the AC500 PLC system, distinguishing it from other communication modules supporting protocols like PROFIBUS, CANopen, or Ethernet/IP within the same product line.

The module is powered by 24 V DC ±20%, drawing power from the PLC backplane bus with a maximum current consumption of 150 mA. It complies with PROFINET IO RT (Real-Time) protocol and operates as a master controller. The communication rate supports 10/100 Mbps, full-duplex, auto-negotiation over two RJ45 Ethernet interfaces with an integrated 2-port switch. It can manage up to 128 PROFINET IO devices, with a minimum communication cycle of 1 ms. The maximum I/O data size is 1,024 bytes input and 1,024 bytes output (FW1024) or 1,440 bytes input and 4,096 bytes output (FW1440) depending on firmware version. Electrical isolation of 500 V DC exists between the Ethernet network and the PLC internal bus. The operating temperature ranges from -25°C to +60°C, storage temperature from -40°C to +70°C, and protection class is IP20. Certifications include CE, cULus, and RoHS. Dimensions are 135 mm × 28 mm × 62 mm, with a weight of approximately 0.133 kg. It features multiple LED indicators for power, run status, network communication, and fault diagnosis.

The module is equipped with two RJ45 Ethernet interfaces (PNIO1 and PNIO2) with an integrated 2-port switch for network daisy-chaining. It connects to the AC500 CPU’s FBP bus for high-speed internal data exchange. The built-in electrical isolation protects against external interference and voltage surges. Users configure IP address, subnet mask, device name, and communication parameters via ABB Automation Builder, including GSDML file import for device integration. The switch supports IEEE 802.3, 100BASE-TX standard, with a maximum segment length of 100 meters using standard copper cables. Onboard LEDs and system diagnostics enable real-time status monitoring and rapid fault localization.

As a PROFINET IO master, the module manages all connected slave devices and executes cyclic and acyclic data exchange. It supports real-time communication with minimum 1 ms cycle time, ensuring deterministic control for time-critical applications. The integrated switch eliminates the need for an external network switch, simplifying system wiring and reducing costs. It supports hot swap operation, allowing replacement without shutting down the entire PLC system during maintenance. With robust electromagnetic compatibility, it maintains stable communication in harsh industrial environments. Firmware updates can be performed via SD card or online tools.

It is ideal for factory automation production lines including automotive manufacturing, packaging machinery, and material handling systems requiring high-speed real-time Ethernet communication. It is widely used in process industries such as water treatment, chemical, pharmaceutical, and food processing plants with distributed I/O and field devices. It serves as a key component for upgrading legacy systems to PROFINET networks and integrating new AC500 PLCs into existing PROFINET infrastructures. It can be combined with other communication modules to build multi-protocol hybrid industrial control networks.

Mount the module on a standard TH35-15 DIN rail adjacent to the AC500 CPU and connect it to the FBP bus via the internal backplane connector. Connect Ethernet cables to the RJ45 interfaces, ensuring proper network topology and cable routing. Complete IP configuration, GSDML file import, and I/O mapping in ABB Automation Builder before commissioning. Keep the operating environment clean, dry, and well-ventilated; inspect terminals, cables, and connections quarterly. The module contains no user-serviceable parts. Replace the module promptly if status LEDs indicate persistent abnormalities or continuous communication failures.