GE IC695CDEM002 Communication Module – PACSystems RX3i

GE IC695CDEM002 PROFINET Controller Communication Module – Deterministic Network Control for PACSystems RX3i

The GE IC695CDEM002 is a dedicated PROFINET IO Controller module engineered for the PACSystems RX3i universal backplane architecture. Unlike general-purpose Ethernet modules, the IC695CDEM002 implements the full PROFINET IO Controller stack — including IRT (Isochronous Real-Time) and RT (Real-Time) communication classes — offloading network cycle management entirely from the CPU’s application processor. This architectural separation ensures that scan-cycle jitter on the RX3i CPU does not propagate into the PROFINET IO update cycle, a critical requirement in motion-adjacent and process-critical control loops.

The module occupies a single slot on the RX3i universal backplane and communicates with the host CPU via the high-speed RX3i backplane bus, which operates at a sustained throughput sufficient to transfer the full IO data image within a single CPU scan cycle. The IC695CDEM002 manages its own PROFINET IO device table independently, maintaining AR (Application Relationship) sessions with up to 128 IO devices without CPU intervention between scan boundaries.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

The IC695CDEM002 implements a dual-processor architecture: a dedicated network processor handles all PROFINET stack operations — frame scheduling, AR session management, alarm handling, and MRP ring supervision — while a secondary interface controller manages the backplane data exchange with the RX3i CPU. This separation means the PROFINET cycle clock is not subject to the variability of the CPU’s ladder/function-block execution time.

EMC and Signal Integrity: The two RJ45 ports are transformer-isolated at the PHY layer, providing 1500 V AC isolation between the field network and the backplane logic. The module’s PCB layout routes differential Ethernet pairs with controlled impedance (100 Ω ±10 %) and includes common-mode chokes on each port to suppress conducted emissions per CISPR 22 Class A limits. This design allows the module to operate in environments with significant variable-frequency drive (VFD) switching noise without requiring additional external filtering.

MRP Ring Redundancy: The integrated 2-port switch supports Media Redundancy Protocol (MRP) in both Manager and Client roles. In MRP Manager mode, the module monitors ring continuity by transmitting test frames at configurable intervals (default 20 ms) and can execute a ring reconfiguration — blocking the redundant port and re-enabling the broken segment — within the MRP standard reconfiguration time of ≤200 ms. This is achieved entirely within the module’s network processor without any CPU ladder logic involvement.

GSDML-Based Device Integration: The IC695CDEM002 uses GSDML (General Station Description Markup Language) files to import IO device profiles into PME. Each PROFINET IO device’s slot/subslot structure, expected data lengths, and alarm types are parsed from the GSDML and stored in the module’s non-volatile configuration memory. At startup, the module independently establishes AR sessions with all configured devices, verifying module identity (NameOfStation, DeviceID, VendorID) before allowing data exchange — a mechanism that prevents accidental substitution of incorrect hardware in multi-device installations.

Alarm and Diagnostic Transparency: The module maps PROFINET process alarms, pull/plug alarms, and status alarms directly into the RX3i CPU’s fault table and I/O status bits. Engineers can read device-level diagnostic data — including channel-granular fault codes from remote IO modules — directly in PME’s fault viewer without requiring custom ladder logic polling routines.

System Integration Benefits

• CPU Scan Decoupling: The PROFINET IO cycle runs asynchronously to the CPU scan, eliminating the risk of IO update starvation during computationally intensive scan cycles. The backplane data exchange uses a double-buffering scheme that guarantees data consistency across the scan boundary.
• Deterministic IRT Scheduling: In IRT mode, the module reserves a fixed bandwidth slice within each PROFINET send clock period for time-critical IO data, ensuring worst-case latency is bounded regardless of RT traffic load on the same network segment.
• Scalable Device Count: With support for 128 IO devices per module, a single IC695CDEM002 can address a complete distributed IO architecture for mid-to-large process cells. Multiple modules can be installed in the same RX3i chassis for larger installations.
• Topology Flexibility: Line, star, and MRP ring topologies are supported without external managed switches for line and ring configurations, reducing BOM cost and eliminating additional network hardware failure points.
• Integrated Diagnostics: PROFINET alarm classes (process, diagnostic, pull/plug, status) are surfaced directly in the RX3i fault table, enabling structured fault handling in ladder logic without custom communication function blocks.
• Hot-Swap Awareness: The module supports PROFINET IO device pull/plug detection. When a field device is disconnected and reconnected, the module automatically re-establishes the AR session and resumes data exchange without requiring a CPU restart or configuration reload.
• Firmware Field Upgradability: Module firmware can be updated via PME over the backplane connection, eliminating the need to remove the module from the chassis for maintenance updates.
• Conformance-Tested Interoperability: As a PROFINET-certified module, the IC695CDEM002 has passed PI (PROFIBUS & PROFINET International) conformance testing, guaranteeing interoperability with any PROFINET IO device carrying a valid GSDML file — including third-party sensors, drives, and remote IO from Siemens, Phoenix Contact, Beckhoff, and others.

Quality Assurance & Global Logistics

Every IC695CDEM002 unit supplied by siemensplc.com is sourced through verified industrial distribution channels with full chain-of-custody traceability. Prior to dispatch from our Xiamen, China facility, each module undergoes a structured pre-shipment inspection covering label and firmware version verification, connector and housing integrity check, and ESD-safe handling throughout the process.

Units are packed in anti-static ESD shielding bags, cushioned with closed-cell foam inserts, and sealed in double-wall corrugated cartons rated for international air freight handling. Each shipment includes a commercial invoice, packing list, and — upon request — a Certificate of Conformance (CoC) and material traceability documentation suitable for quality-critical procurement records.

From Xiamen, we ship via DHL Express, FedEx International Priority, and UCP air freight, with typical transit times of 3–5 business days to Southeast Asia, 5–8 business days to Europe and the Middle East, and 5–10 business days to North and South America. DDP (Delivered Duty Paid) terms are available for select destinations. All shipments carry full cargo insurance and real-time tracking from dispatch to delivery.

A 12-month warranty covers all units against manufacturing defects and functional failure under normal operating conditions. Warranty claims are processed with a target response time of 48 hours from receipt of the defective unit.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
© 2026 siemensplc.com. All rights reserved.