Weidmuller FS2COECO Upgrade Solution for FS2 Series

Product Overview

Weidmuller FS2COECO Upgrade Solution for FS2 Series: Seamless Transition to Modern Fieldbus Architecture

The Weidmuller FS2COECO is a CANopen-protocol fieldbus interface module from the FS2 Series, engineered to serve as a direct upgrade and replacement solution for aging or discontinued fieldbus gateway components in industrial control systems. Whether your facility is migrating from legacy I/O coupling architectures or replacing a failed unit on a live production line, the FS2COECO delivers the protocol compatibility, DIN rail form factor, and electrical interface consistency that system integrators and maintenance engineers demand.

Designed and manufactured in Germany to Weidmuller’s industrial-grade standards, the FS2COECO integrates into existing FS2 Series backplane assemblies without requiring rewiring of field terminals or reprogramming of the host PLC. Its CANopen master/slave interface aligns with the CiA 301 and CiA 401 device profiles, ensuring that existing network configurations, node addresses, and PDO mappings remain valid after module substitution. This dramatically reduces commissioning time and eliminates the risk of configuration drift during emergency replacements.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration to the FS2COECO rarely involves the fieldbus interface module in isolation. In most retrofit projects, the FS2COECO is installed alongside the Weidmuller FS2 Series digital input modules (such as the FS2DI8) and digital output modules (FS2DO8), which slot directly into the same FS2 backplane assembly. These I/O modules retain their existing terminal wiring, meaning field sensors, actuators, and signal cables connected to the original installation do not need to be disturbed during the upgrade.

Power supply continuity is maintained through the Weidmuller PRO ECO 24V DC power supply units already present in the control cabinet. The FS2COECO’s 24 V DC input is fully compatible with these supplies, and no additional power conditioning is required. In cabinets where bus power distribution is managed through Weidmuller WPE series terminal blocks and ZDU 6 potential distribution terminals, the existing wiring topology is preserved without modification.

For facilities running mixed-protocol architectures — for example, where a Siemens S7-300 or S7-1500 PLC acts as the CANopen master — the FS2COECO’s standard CiA 301 compliance ensures that the existing GSD or EDS configuration files remain valid. Engineers migrating from older Weidmuller FS1 Series fieldbus couplers will find that the FS2COECO’s expanded baud rate support (up to 1 Mbps) allows the network to be upgraded incrementally without replacing all slave nodes simultaneously.

In control cabinets where Weidmuller ACT20P signal conditioners or WAS4 analog input modules are used for 4–20 mA process signal isolation, the FS2COECO integrates transparently, as these devices communicate through the backplane rather than the fieldbus network directly. Similarly, Weidmuller OMNIMATE signal terminal blocks used for field wiring termination remain fully compatible, preserving the cabinet’s wiring infrastructure investment.

For applications requiring remote I/O expansion beyond the local cabinet, the FS2COECO can coexist with Weidmuller u-remote UR20 Series remote I/O stations on the same CANopen network segment, enabling a phased migration strategy where legacy FS2 local I/O and modern UR20 remote I/O operate concurrently under the same PLC program.

Retrofit Guidance FAQ

Q1: Can the FS2COECO replace my existing FS2 Series fieldbus coupler without rewiring field terminals?
Yes. The FS2COECO mounts on the same 35 mm DIN rail and connects to the FS2 backplane bus using the same mechanical interface as predecessor FS2 fieldbus couplers. Field terminal wiring on the I/O modules is not affected. Only the fieldbus cable (CANopen, 9-pin D-Sub or open-style connector) needs to be reconnected to the new module.

Q2: Will my existing PLC program and CANopen node configuration remain valid after replacement?
In most cases, yes. The FS2COECO is CiA 301 compliant and supports the same PDO/SDO communication model as earlier FS2 fieldbus interfaces. Node address and baud rate settings are preserved via the rotary switch. If your PLC uses an EDS file for CANopen configuration, the FS2COECO’s EDS file (available from Weidmuller) should be imported and compared before going live. Minor PDO remapping may be required in some legacy configurations.

Q3: What physical space does the FS2COECO require in the control cabinet?
The FS2COECO occupies a standard FS2 Series module slot width on a 35 mm DIN rail. It is dimensionally equivalent to other FS2 Series fieldbus couplers, so no cabinet modifications or additional DIN rail space are required for a like-for-like replacement. For new installations, allow standard FS2 module spacing for heat dissipation.

Q4: How does TOPNLMS support the replacement process from order to commissioning?
All FS2COECO units shipped by TOPNLMS are sourced from authorized supply channels and undergo pre-shipment functional verification. Orders are processed within 1–2 business days, with express shipping options available for emergency replacements. Each unit is covered by a 12-month warranty from the date of shipment. Our technical team is available via email ([email protected]) or phone (+86 18359293191) to assist with EDS file sourcing, node configuration guidance, and compatibility verification before purchase.

Warranty Assurance

Every Weidmuller FS2COECO unit supplied by TOPNLMS is backed by a comprehensive 12-month warranty covering manufacturing defects and functional failures under normal operating conditions. Prior to shipment, each module undergoes a multi-point inspection protocol that verifies power-up behavior, backplane bus communication integrity, CANopen network initialization, and LED status indicator functionality.

In the event of a warranty claim, TOPNLMS provides a streamlined replacement process: customers submit a fault description and order reference, and a replacement unit is dispatched within 3–5 business days. No lengthy RMA bureaucracy — our priority is minimizing your system downtime. For critical production environments, we recommend maintaining a spare FS2COECO in your on-site inventory; TOPNLMS can supply multiple units from stock to support your spares management program.

Long-term supply continuity is a core commitment. TOPNLMS maintains ongoing stock of FS2 Series components to support customers through extended production runs and future maintenance cycles. For procurement teams managing multi-year maintenance contracts, blanket order arrangements and reserved stock allocations are available upon request.

Contact our industrial automation specialists for pricing, lead time confirmation, and technical pre-sales support:

• Email: [email protected]
• Phone / WhatsApp: +86 18359293191
• Website: https://topnlms.com