Description

Yokogawa NFLC121-S00 CANopen Communication Module

Configured for CANopen master communication in STARDOM FCN and FCN-RTU control networks, the Yokogawa NFLC121-S00 (NFLC121 CANopen Communication Module) provides direct physical and protocol-level execution of cyclic and acyclic data exchange between the host controller and CANopen slave devices. The module operates through a single CANopen communication port and supports network management, PDO/SDO messaging, and node supervision functions within controller-based automation architectures.

Suffix Breakdown & Model Matrix

The supplied documentation identifies NFLC121-S00 as the standard model variant. No additional suffix matrix or ordering-code decomposition is specified in the available technical data.

Hardware Specifications

Parameter	Specification
Model	NFLC121-S00
Brand	Yokogawa
Product Type	CANopen Communication Module
Communication Protocol	CANopen (CiA 301 compliant)
Role	CANopen Master
Number of Ports	1
Connector Type	D-sub 9-pin male
Baud Rate	10 kbps to 1 Mbps selectable
Maximum Nodes	Up to 127 CANopen slave nodes
Isolation	Signal-to-system transformer isolation
Power Consumption	700 mA at 5 VDC
Weight	Approximately 0.3 kg
Operating Temp	-10 degC to +55 degC
Storage Temp	-25 degC to +70 degC
Humidity	5 % to 95 % RH, non-condensing
Environmental Rating	ISA G3 corrosive gas resistance

Channel-to-Channel Isolation and Process Control Network Integration

The NFLC121-S00 incorporates transformer-based signal isolation between the communication interface and the controller system circuitry. This isolation arrangement limits the propagation of external electrical disturbances from the field communication segment into the controller backplane.

Within STARDOM FCN architectures, the module performs CANopen master functions including network initialization, node monitoring, PDO data transfer, SDO parameter access, and emergency message handling. Communication status and diagnostic information are available through onboard indication functions intended for maintenance and network troubleshooting activities.

Frequently Asked Questions

Q: Does the NFLC121-S00 operate as a CANopen master or slave device?
A: The module operates as a CANopen master and manages communication with connected CANopen slave nodes.

Q: How many field devices can be connected to one module?
A: The CANopen network supports up to 127 slave nodes, subject to network design, addressing, cable length, and baud-rate constraints.

Q: Is communication isolation provided between the CANopen network and controller electronics?
A: Yes. The module utilizes transformer-based signal isolation between the communication interface and the system circuitry.

Field Installation Guidelines

• Verify compatibility between the installed FCN or FCN-RTU controller platform and the NFLC121-S00 module before insertion into the system base.
• Use CANopen-compliant network cabling and maintain proper bus termination at both physical ends of the communication segment.
• Route communication cables separately from high-voltage power conductors, motor feeders, and switching circuits where practical.
• Maintain shield continuity according to the site grounding philosophy and controller installation manual.
• Confirm node addressing and baud-rate settings across all connected CANopen devices before network commissioning.
• Perform communication verification and diagnostic checks after installation and before placing the controller into operational service.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems