PLCs, Power Supplies & Others

This communication module enables reliable serial data exchange between SPH controllers and external devices. It integrates seamlessly into the Fuji Electric SPH series programmable controller platform. The unit provides versatile serial connectivity for programming, HMI, and device networking. Users can connect barcode readers, printers, and weigh scales through a single module.

Serial Port Configuration and Interface Options

This module features two independent serial ports for flexible device connectivity. It provides one RS-232C port for point-to-point communication with programming tools. The unit also includes one RS-422/RS-485 port for multi-drop networking applications. Each port operates independently with individual protocol and speed configurations. This dual-port design enables simultaneous communication with different device types.

RS-232C Communication and Programming Access

The NP1L-RS3 provides an RS-232C port for direct programming and debugging access. Users connect the module to a PC for program uploads and online monitoring. The port also supports connection to operator panels and simple displays. Transmission speeds range from 300 bps to 115,200 bps for flexible configuration. Maximum cable length reaches 15 m for local device connections. Additionally, the port supports hardware handshaking for reliable data transfer.

RS-422/RS-485 Multi-Drop Networking

This module includes an RS-422/RS-485 port for distributed device connectivity. Users can connect up to 31 slave devices on a single multi-drop network. Maximum cable length reaches 1,200 m for large facility installations. The port supports both 2-wire and 4-wire configurations for application flexibility. Built-in termination resistors improve signal integrity over long cable runs. This networking capability suits distributed I/O and remote monitoring applications.

Protocol Support and Communication Flexibility

The module supports Modbus RTU for standard industrial device integration. It also handles ASCII protocol for simple terminal and printer communication. The unit supports Fuji Electric’s proprietary protocol for seamless system integration. Users configure protocol settings, baud rates, and data formats through software. Each port allows independent protocol selection and parameter configuration. This flexibility accommodates diverse field devices within a single module.

Data Buffering and Communication Performance

The module buffers incoming and outgoing data for reliable transmission. This buffering prevents data loss during high-speed communication bursts. The unit also supports both master and slave operation modes. Users can implement custom communication sequences through ladder logic programming. Furthermore, the module provides diagnostic data for each communication port. This visibility enables operators to identify and resolve communication issues promptly.

Energy Consumption and Environmental Tolerance

The module draws 50 mA at 5 V DC from the backplane power supply. Power dissipation remains below 1.5 W under normal operating conditions. The unit operates reliably between 0 °C and 55 °C ambient temperature. Humidity tolerance spans 10% to 90% without condensation issues. The module carries an IP20 rating for protection against solid objects. This robust design suits packaging lines, material handling, and simple automation tasks.

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