Siemens 6GK1161-3AA00 PCI Communication Processor – CP 1613 A2

Siemens 6GK1161-3AA00 CP 1613 A2 — PCI-Based Industrial Ethernet Communication Processor for PROFINET IO Networks

The Siemens 6GK1161-3AA00, commercially designated as the CP 1613 A2, is a 32-bit PCI communication processor engineered for integrating PC-class hardware — including programming devices, industrial PCs, and SCADA workstations — into PROFINET IO and Industrial Ethernet environments. Unlike generic NIC adapters, the CP 1613 A2 carries a dedicated hardware architecture that offloads protocol-layer processing from the host CPU, enabling deterministic frame handling at 10/100 Mbit/s with full support for ISO transport, TCP/IP, and PROFINET IO Controller, Device, and Supervisor roles within a single card footprint.

Deployed across automotive body-shop lines, pharmaceutical batch-control systems, and continuous-process plants, the 6GK1161-3AA00 occupies a well-defined position in the SIMATIC communication hierarchy: it bridges the engineering layer (PG/PC) to the field-device layer (S7-300, S7-400, S7-1500, ET 200 distributed I/O) without requiring an intermediate gateway or protocol converter. The card integrates natively with STEP 7 V5.x via the SOFTNET-IE S7 driver stack and with TIA Portal V13 through V19 via the updated SOFTNET-IE Industrial Ethernet package, preserving backward compatibility across multi-generation plant architectures.

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Technical Parameters

Hardware Logical Analysis

The 6GK1161-3AA00 is built around a dedicated Ethernet controller ASIC paired with an onboard microprocessor that handles the lower layers of the PROFINET IO stack independently of the host CPU. This architecture produces two measurable benefits: first, the host CPU is relieved of cyclic frame scheduling, which is critical in soft-PLC (WinAC) deployments where the same processor manages both the control logic and the HMI; second, the card can sustain deterministic send-clock cycles for PROFINET IRT without relying on Windows scheduler interrupts, which are inherently non-deterministic.

The PCI bus interface operates at 32-bit width with support for both 33 MHz and 66 MHz bus speeds, and the 3.3 V / 5 V universal keying ensures physical compatibility with legacy and current-generation industrial PC backplanes. The RJ45 port implements auto-MDI/MDIX crossover detection, eliminating the need for crossover cables in direct-connect topologies — a practical advantage during commissioning in confined control-cabinet environments.

From an EMC standpoint, the card’s PCB layout follows Siemens’ internal shielding guidelines for industrial-grade hardware: the analog front-end (magnetics, transformer isolation) is physically separated from the digital logic plane by a ground-pour moat, reducing capacitive coupling between the Ethernet PHY and the PCI bus traces. This layout discipline contributes to the card’s compliance with EN 61000-6-2 Class A immunity levels, which mandate withstanding 10 V/m radiated fields and ±2 kV EFT/burst transients — conditions routinely encountered near variable-frequency drives and high-current contactors in panel environments.

The PROFINET IRT implementation on the CP 1613 A2 uses a hardware-based send-clock synchronization mechanism. The card receives the IRT domain’s synchronization frames and aligns its own transmission windows to the master clock with sub-microsecond precision, achieving jitter values below 1 µs — a prerequisite for motion-control applications where axis synchronization tolerances are in the single-digit microsecond range.

System Integration Benefits

• Zero-gateway PROFINET IO Controller role: The CP 1613 A2 allows a standard PC to act as a PROFINET IO Controller, directly managing up to 128 IO devices (ET 200SP, ET 200MP, distributed drives) without an intermediate S7 CPU — reducing BOM cost and latency in PC-centric control architectures.
• Simultaneous multi-role operation: A single 6GK1161-3AA00 can operate concurrently as PROFINET IO Controller, Device, and Supervisor, enabling the host PC to both control field devices and expose its own process data to an upstream controller — a topology common in test-bench and quality-inspection systems.
• Native TIA Portal hardware catalog entry: The card appears as a catalogued hardware object in TIA Portal’s device view, allowing engineers to configure IO device assignments, send-clock intervals, and watchdog times graphically without manual GSD file import.
• SOFTNET-IE S7 connection pooling: Up to 64 S7 connections are managed by the driver’s connection pool, with automatic reconnection on link loss — eliminating the need for application-level reconnection logic in SCADA and historian software.
• Isochronous Real-Time (IRT) support: Enables synchronized data exchange with IRT-capable IO devices (e.g., SINAMICS drives, SIMOTION controllers) at send-clock intervals as low as 250 µs, supporting coordinated multi-axis motion profiles.
• Integrated network diagnostics via PROFINET Supervisor role: The card can read LLDP neighbor tables, port statistics, and alarm records from all PROFINET devices on the subnet, feeding structured diagnostic data to WinCC or custom OPC DA/UA clients without additional diagnostic hardware.
• Backward compatibility with ISO and TCP/IP stacks: Legacy S5-compatible ISO transport connections and modern TCP/IP socket connections coexist on the same card, protecting investments in older SCADA drivers while enabling migration to Ethernet-native protocols.
• Deterministic cycle-time contribution: Because the card’s onboard processor handles frame scheduling, the host OS scheduling jitter does not propagate into the PROFINET send-clock domain. This decoupling allows the CP 1613 A2 to maintain ≤ 1 ms RT cycle times even when the host PC is under high CPU load from HMI rendering or historian writes.
• ESD and surge protection on the RJ45 port: The integrated magnetics assembly provides 1500 V AC isolation between the Ethernet cable and the card’s logic ground, protecting the PCI bus and host motherboard from cable-borne surge events in industrial wiring environments.
• Compact half-length PCI form factor: At approximately 170 mm card length, the 6GK1161-3AA00 fits in short-slot industrial PC chassis (e.g., Siemens SIMATIC IPC427, IPC477) where full-length cards cannot be accommodated.

Quality Assurance & Global Logistics

Every unit of the Siemens 6GK1161-3AA00 supplied through siemensplc.com is sourced as genuine Siemens-manufactured hardware, produced at Siemens’ certified manufacturing facilities in Germany. Each card undergoes a pre-shipment inspection protocol that includes visual examination of PCB surface and component markings, firmware version verification against Siemens’ published release matrix, and a functional power-on test confirming PCI bus enumeration and Ethernet link establishment.

Anti-counterfeit verification is performed by cross-referencing the unit’s serial number and date code against Siemens’ product traceability records. Holographic labels and laser-etched part markings are inspected under magnification. Units that do not pass all verification steps are quarantined and not offered for sale.

Packaging follows ESD-safe handling standards: each card is sealed in a conductive anti-static bag, placed in foam-lined inner packaging, and shipped in a double-wall corrugated outer carton rated for international air-freight handling. Export documentation — including commercial invoice, packing list, and certificate of origin — is prepared for all international shipments. DDP (Delivered Duty Paid) and DAP (Delivered At Place) Incoterms are available on request.

Shipments originate from our warehouse in Xiamen, China. In-stock orders are dispatched within 1–2 business days via DHL Express, FedEx International Priority, or UPS Worldwide Expedited, with typical transit times of 3–7 business days to Europe, North America, Southeast Asia, and the Middle East. All shipments are fully tracked and insured. A 12-month warranty covers defects in materials and workmanship from the date of shipment.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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