170NEF11021 Schneider Modicon Communication Adaptor
Manufacturer: Schneider
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Part Number: 170NEF11021
Condition：New with Original Package
Product Type: Communication Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Schneider Electric 170NEF11021 Modicon Momentum Communication Adaptor
The Schneider Electric 170NEF11021, also cataloged as the 170NEF11021 Modbus Plus Communication Adaptor, operates as a dedicated hardware component for deterministic peer-to-peer data transmission within Modicon Momentum network architectures. It manages token-passing network traffic across twisted-pair physical media to interface distributed controller bases with broader industrial networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 170NEF11021 |
| Brand | Schneider Electric |
| Origin | Consult Factory |
| Weight | Consult Factory |
| Dimensions | 141.5 x 125 x 47.5 mm |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | Powered from Momentum I/O base |
| Protocol | Modbus Plus |
| Transmission Rate | 1 Mbit/s |
| Topology | Multidrop token bus |
| Network Capacity | 31 devices per segment |
| Max Cable Distance | 5000 m with repeater |
Backplane Bus Communication and I/O Density Scaling
The communication adaptor links directly with the Modicon Momentum backplane bus, transferring network frames between the Modbus Plus token ring and the controller logic at 1 Mbit/s. System engineers rely on high firmware flash compatibility to ensure seamless network handshakes across legacy and upgraded base assemblies. Furthermore, deterministic backplane bus communication velocity guarantees rapid packet processing while internal bus-to-logic isolation shields system electronics from network voltage surges.
Frequently Asked Questions
Q: Can the 170NEF11021 be disconnected from the Modicon Momentum base while powered?
A: Hot-swapping or removing the module while the base remains energized is restricted, as active electrical transients on the backplane can damage internal logic components. Always isolate power prior to extraction.
Q: How does the adaptor handle network communication failures or token loss?
A: The device supports user-configurable fail-state options, including maintaining the last valid value, falling back to zero, or forcing outputs to a safe zero state upon communication interruption.
Field Installation Guidelines
Mount the adaptor directly onto the designated Modicon Momentum base, ensuring that mechanical locking clips latch completely. Connect the twisted-pair cabling securely to the designated network ports, maintaining appropriate termination resistors at both ends of the Modbus Plus trunk line. Route communication cables away from high-voltage motor wires and switching drives to suppress electromagnetic noise and prevent token degradation.