Triconex Tricon CX Series Modules: CM3201S2 CPU Module

Technical Dossier

Product Details And Specifications

Triconex Tricon CX Series Technical Notes

The Evolution of Tricon CX Architecture

The Triconex Tricon platform originated in the late 1980s under Triconex Corporation, which was subsequently acquired by Invensys and later by Schneider Electric. The original Tricon v9 and v10 systems used a parallel backplane bus with dedicated MP3008 and MP3100 main processors. The transition to the Tricon CX generation introduced a high-speed communication bus (TCNet), a modular chassis design supporting up to 16 I/O slots per main chassis, and a new family of Communication Modules (CM) that replaced the earlier ACM (Attached Communication Module) architecture.

The CM3201S2 — the subject of this page — belongs to the second-generation CX communication module family, providing the primary Ethernet-based supervisory interface between the Tricon CX main processor and the host DCS or SCADA layer. Earlier CM models such as the CM3201 (non-S2 suffix) used a single-port configuration; the S2 revision introduced dual-port redundant Ethernet with enhanced diagnostics. Compatibility between Tricon CX chassis generations (v10, v11, v15) requires careful firmware alignment, particularly when mixing CM3201S2 units with MP3008 or MP3100 main processors from different production batches. Schneider Electric's TriStation 1131 programming environment (v4.x and v5.x) governs configuration and download compatibility across all CX-generation hardware.

Tricon CX Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked modules within the Triconex Tricon CX platform. Each entry reflects a distinct hardware function within the TMR architecture.

CPU / Main Processors

• MP3008: Tricon CX main processor, 133 MHz, supports v10/v11 chassis
• MP3100: Enhanced main processor, 266 MHz, v15 chassis compatible
• MP3101: High-performance main processor with extended memory for large I/O counts

Communication Modules

• CM3201S2: Dual-port Ethernet communication module, supervisory interface, SIL 3 rated
• CM3201: Single-port Ethernet communication module, legacy supervisory interface
• CM3204: Peer-to-peer communication module for Tricon-to-Tricon TCNet links
• CM3210: Serial communication module, RS-232/RS-485, Modbus RTU support
• CM3216: Fieldbus communication module, PROFIBUS DP master interface

Digital Input (DI) Modules

• DI3401: 32-channel 24 VDC digital input, TMR voting, field-side isolated
• DI3416: 16-channel 120 VAC digital input, high-voltage process field wiring
• DI3420: 32-channel 24 VDC digital input with enhanced diagnostics and SOE

Digital Output (DO) Modules

• DO3401: 16-channel 24 VDC solid-state digital output, 2A per channel
• DO3416: 8-channel relay output module, dry contact, 5A rated
• DO3481: 16-channel 24 VDC digital output with output readback diagnostics

Analog Input (AI) Modules

• AI3351: 8-channel 4–20 mA analog input, HART pass-through, 16-bit resolution
• AI3361: 8-channel thermocouple/RTD analog input, cold junction compensation

Analog Output (AO) Modules

• AO3481: 8-channel 4–20 mA analog output, HART capable, 12-bit resolution

Power Supply Modules

• PS3100: 24 VDC chassis power supply, redundant pair configuration, 30A output
• PS3200: 120/240 VAC input power supply module, universal input range

Sourcing Hard-to-Find & Obsolete Tricon CX Parts

The Tricon CX platform entered its mature/end-of-active-production phase following Schneider Electric's transition toward the Tricon CX v15 and the newer Tricon CX v16 architecture. Several modules — including the CM3201 (non-S2), MP3008, DI3416, and DO3416 — are no longer manufactured under standard production orders and are classified as obsolete or last-time-buy status by Schneider Electric.

Quality Control for the Tricon CX Range

Tricon CX modules present specific test challenges due to their TMR backplane architecture and high-speed TCNet bus communication. Standard bench power-up is insufficient to validate module health; each unit must be exercised within a live Tricon CX chassis to confirm inter-leg voting integrity and communication bus participation.

DriveKNMS applies the following test protocol to all Tricon CX modules prior to dispatch:

• Full chassis insertion test in a reference Tricon CX v11 or v15 test rig with active MP3008 or MP3100 main processors
• TriStation 1131 download and online monitoring to confirm module recognition and diagnostic status (no faults, no inhibits)
• For CM modules (including CM3201S2): Ethernet port continuity, link negotiation at 10/100 Mbps, and Modbus TCP/IP poll response verification
• For DI/DO modules: channel-by-channel signal injection and readback against known reference values
• For AI modules: 4–20 mA loop calibration check at 0%, 25%, 50%, 75%, and 100% of span
• Burn-in soak: 48-hour powered operation at ambient temperature with periodic diagnostic polling
• Final visual inspection: connector pin condition, conformal coating integrity, no evidence of thermal stress or board-level repair