This communication unit enables seamless data exchange between PLC systems and field networks. It supports multiple fieldbus protocols for flexible integration with various devices. The unit acts as a gateway for distributed I/O and remote stations.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | NP3L-FL3PCS |
| Product Type | Communication Unit / Fieldbus Gateway |
| Supply Voltage | 24 V DC ±20% |
| Power Consumption | 6 W (maximum) |
| Physical Interfaces | 1 x RS-485, 1 x Ethernet (RJ45), 1 x USB (configuration) |
| Supported Protocols | Modbus RTU, Modbus TCP, PROFIBUS DP, DeviceNet, CANopen |
| Ethernet Speed | 10/100 Mbit/s (auto-negotiating) |
| Serial Speed | Up to 115.2 kbit/s (software-selectable) |
| Max Slave Nodes | 64 (serial) / 128 (Ethernet) |
| Data Buffer | 32 KB (receive) / 16 KB (transmit) |
| Galvanic Isolation | 1500 V RMS (fieldbus side) |
| Diagnostic LEDs | 5 x LED (Power, Run, Bus, Error, Link) |
| Configuration | DIP switches + USB software tool |
| Mounting | DIN rail (TS 35) |
| Dimensions (W x H x D) | 45 mm x 110 mm x 75 mm |
| Weight | 0.28 kg |
Mechanical Construction and Installation
This communication unit features a compact 45 mm wide housing for efficient panel space utilization. Its DIN-rail mounting mechanism allows for quick and secure installation. The unit weighs just 0.28 kilograms for easy handling. All connectors are front-facing for straightforward cabling and maintenance.
Power Supply and Electrical Characteristics
The device operates from a 24 V DC supply with a ±20 percent tolerance. It consumes a maximum of 6 watts under full communication load. The unit includes reverse polarity protection for the supply input. An internal switching regulator ensures stable operation across varying voltage conditions.
Multi-Protocol Support and Interoperability
The unit supports Modbus RTU for legacy serial device communication. It also handles Modbus TCP for modern Ethernet-based SCADA systems. The module supports PROFIBUS DP for Siemens and third-party integration. DeviceNet and CANopen provide connectivity to automotive and machine control networks. This extensive protocol support simplifies system upgrades and expansions.
Connectivity and Network Capabilities
An RS-485 port enables multi-drop networking with up to 64 slave devices. An Ethernet port provides high-speed connectivity to plant-wide networks. A USB port allows for convenient local configuration and firmware updates. The module manages up to 128 Ethernet connections simultaneously.
Data Handling and Buffering
The unit stores incoming data in a 32 KB receive buffer. The transmit buffer holds 16 KB of outgoing messages. These generous buffers accommodate large data transfers without blocking. The device handles protocol conversion between different network types seamlessly.
Diagnostic Feedback and Status Monitoring
Five front-panel LEDs provide comprehensive operational status visibility. The Power LED confirms correct supply voltage application. The Run LED indicates normal module operation. The Bus LED shows active fieldbus communication. The Error LED signals any fault or configuration issue. The Link LED displays Ethernet connection status.
Energy Storage and Reliability Features
Internal capacitors provide ride-through during brief power interruptions. These capacitors maintain operation for approximately 20 milliseconds. The unit also includes a hardware watchdog timer for automatic recovery. This watchdog resets the module if it detects a software lock-up.
Application Suitability
This communication unit serves a wide variety of industrial networking applications. It works effectively in process control, manufacturing automation, and material handling. The device also supports building management and utility monitoring systems. Its operating temperature ranges from -10°C to +55°C.
Details
| Weight | 0.28 kg |
|---|---|
| Dimensions | 45 × 110 × 75 mm |
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