Moxa CP-118EL-A Industrial Ethernet Serial Communication Server

The Moxa CP-118EL-A is a robust industrial Ethernet serial communication server engineered to bridge the gap between legacy serial devices and modern IP networks, offering seamless data acquisition and control in demanding industrial environments. This device boasts significant advantages including its high-speed communication capabilities, extensive device compatibility, and ruggedized design for industrial deployment. Key technical parameters include its support for 8 RS-232/422/485 serial ports, a 10/100 Mbps Ethernet interface, and wide operating temperature range of -40 to 75°C, making it an ideal solution for critical infrastructure and automation applications.

Product Specifications

| Feature               | Specification                                  |

| :-------------------- | :--------------------------------------------- |

| Serial Ports          | 8 x RS-232/422/485 (selectable)                |

| Ethernet Interface    | 1 x 10/100Base-TX Ethernet                     |

| Serial Port Speed     | Up to 921.6 kbps                               |

| Power Input           | 12-48 VDC                                      |

| Operating Temperature | -40 to 75°C                                    |

| Mounting              | DIN-rail, Wall-mount                           |

| Protocol Support      | TCP/IP, UDP, HTTP, DHCP, ARP, ICMP, BOOTP, Telnet, Modbus TCP |

| Dimensions            | 150 x 135 x 45 mm                              |

| Warranty              | 5 years                                        |

Core Features & Market Positioning

The Moxa CP-118EL-A distinguishes itself through its advanced serial port management and industrial-grade construction. Its ability to multiplex multiple serial connections over a single Ethernet link significantly reduces cabling complexity and network infrastructure costs. Furthermore, Moxa's commitment to industrial reliability is evident in its extended operating temperature range and robust housing, designed to withstand shock, vibration, and harsh environmental conditions common in manufacturing floors, power substations, and transportation systems. The device's dual operating modes, Real COM and Virtual COM, provide exceptional flexibility for integrating diverse serial devices with applications running on Windows or Linux platforms, ensuring broad compatibility and ease of deployment.

Key Application Scenarios

This communication server excels in scenarios demanding reliable serial-to-Ethernet conversion for industrial automation, SCADA systems, and remote device management. It is particularly well-suited for connecting legacy Programmable Logic Controllers (PLCs), sensors, barcode scanners, and other serial-based equipment to an industrial network. Common applications include centralized monitoring and control of distributed assets, enabling remote diagnostics and configuration of equipment in hard-to-reach locations, and facilitating data logging from multiple serial devices simultaneously. The CP-118EL-A is instrumental in modernizing existing infrastructure by allowing older serial devices to participate in IIoT ecosystems.

Practical System Integration Guidance

Integrating the Moxa CP-118EL-A into an industrial network is streamlined through Moxa's intuitive management tools and extensive documentation. The device supports DIN-rail mounting for quick installation in control cabinets. Initial setup involves configuring the IP address, subnet mask, and gateway via a web console, Telnet, or Moxa's Device Search utility. For serial port configuration, users select the appropriate RS-232/422/485 mode and baud rate to match the connected devices. The Real COM driver allows seamless integration with existing applications that expect standard COM ports, while the Virtual COM mode facilitates custom application development over TCP/IP sockets.

Operation and Risk Mitigation

Operating the Moxa CP-118EL-A requires adherence to standard industrial network security practices. To mitigate risks, it is recommended to assign static IP addresses, configure firewall rules to restrict access, and disable unused services. Regular firmware updates from Moxa should be applied to address any potential vulnerabilities. In case of communication failures, common troubleshooting steps involve verifying physical connections, checking serial port configurations on both the CP-118EL-A and the connected device, and confirming IP connectivity. Diagnostic LEDs on the unit provide visual indicators of power, network activity, and serial port status, aiding in rapid fault identification.

Scalability & Long-Term Value

The CP-118EL-A offers significant scalability and long-term value for industrial organizations. Its ability to support up to eight serial devices on a single Ethernet port allows for expansion as more serial equipment is brought online, without requiring additional network switches or complex cabling. Moxa's robust product design and 5-year warranty underscore its commitment to long-term operational stability. Furthermore, its compatibility with Moxa's broader portfolio of industrial networking solutions, including managed switches and gateways, facilitates the development of comprehensive IIoT strategies and smart factory architectures, ensuring that investments in communication infrastructure remain relevant and capable of supporting future technological advancements.

Frequently Asked Questions

What is the primary function of the Moxa CP-118EL-A?

The Moxa CP-118EL-A functions as an industrial Ethernet serial communication server. It converts legacy serial device data into Ethernet packets for network transmission. This allows older equipment to communicate over modern IP networks.

This device bridges the gap between serial and Ethernet networks. It is crucial for modernizing industrial automation systems. It enables remote monitoring and control of serial devices.

Its core purpose is to provide a reliable and high-performance interface for serial devices. This ensures seamless integration into SCADA and IIoT environments. It supports multiple serial protocols for broad compatibility.

How do I configure the serial port settings on the CP-118EL-A?

You can configure serial port settings through the web-based management interface. Access this by entering the device's IP address into a web browser. Select the desired RS-232/422/485 mode and set the baud rate, data bits, parity, and stop bits.

Alternatively, configuration can be performed via Telnet or command-line interface. Moxa's Device Search utility can also assist in initial setup and IP address assignment. Ensure these settings match the connected serial device.

Proper configuration is vital for successful communication. Incorrect settings will result in data errors or a complete lack of communication. Always refer to the connected device's manual for its serial parameters.

What operating systems are supported by the CP-118EL-A's drivers?

The CP-118EL-A supports major operating systems through its Real COM and Virtual COM drivers. This includes comprehensive support for various versions of Microsoft Windows.

Linux distributions are also supported, enabling integration into diverse industrial control platforms. This broad OS compatibility ensures flexibility in system design and deployment.

The Real COM driver allows legacy applications expecting standard COM ports to connect seamlessly. Virtual COM mode enables applications to communicate with the device over TCP/IP sockets.

Can the CP-118EL-A connect to devices using RS-485 with two-wire communication?

Yes, the CP-118EL-A is fully capable of supporting RS-485 communication, including two-wire configurations. The serial ports are selectable between RS-232, RS-422, and RS-485 modes.

When using RS-485, you can configure it for either two-wire or four-wire operation. This flexibility allows connection to a wide range of industrial field devices that utilize RS-485.

Ensure that the wiring and termination resistors for the RS-485 bus are correctly implemented for reliable two-wire communication over longer distances.

What is the maximum serial data rate supported by the CP-118EL-A?

The Moxa CP-118EL-A supports a maximum serial data rate of up to 921.6 kbps. This high speed ensures efficient data transfer for demanding applications.

This data rate is sufficient for most industrial protocols and applications. It allows for quick transmission of sensor readings and control commands.

When configuring the serial ports, it is important to set the baud rate to match the requirements of the connected devices. Higher baud rates can be achieved with shorter cable lengths and good signal integrity.

How does the CP-118EL-A handle multiple serial devices on one Ethernet connection?

The CP-118EL-A acts as a multiplexer, allowing up to eight serial devices to share a single Ethernet connection. This significantly reduces network infrastructure costs and complexity.

It achieves this by encapsulating serial data from each port into IP packets. The device then routes these packets over the Ethernet network to a designated destination.

This capability is crucial for efficiently integrating numerous serial devices into a unified network infrastructure, especially in large-scale industrial deployments.

What is the warranty period for the Moxa CP-118EL-A?

Moxa typically provides a 5-year warranty for their industrial communication products, including the CP-118EL-A. This reflects the company's confidence in the product's reliability and durability.

A 5-year warranty offers significant peace of mind for industrial users. It ensures that the investment is protected against manufacturing defects over a long operational period.

Always refer to the specific product documentation or sales representative for the most current and precise warranty terms applicable to your region and purchase.

Does the CP-118EL-A support Modbus TCP protocol?

Yes, the Moxa CP-118EL-A explicitly supports the Modbus TCP protocol. This is a common requirement for integrating industrial automation devices.

Its support for Modbus TCP allows it to act as a Modbus gateway, converting Modbus serial communications to Modbus TCP for network integration. This is essential for modern SCADA systems.

By supporting Modbus TCP, the CP-118EL-A simplifies the integration of Modbus-based devices into Ethernet networks, enabling easier data acquisition and control.

What power supply voltage range is required for the CP-118EL-A?

The Moxa CP-118EL-A is designed to operate with a wide DC power input range, typically from 12 to 48 VDC. This broad range accommodates various industrial power sources.

This flexibility in power input is crucial for industrial environments where power supply voltages can vary. It ensures compatibility with existing power infrastructure.

Proper power supply connection is essential for reliable operation. Ensure the selected power source meets the voltage and current requirements specified in the product manual.

Can the CP-118EL-A be used in extreme temperature environments?

Yes, the Moxa CP-118EL-A is engineered for operation in extreme industrial temperatures. It typically features an operating temperature range of -40 to 75°C.

This wide temperature tolerance makes it suitable for deployment in harsh environments such as outdoor enclosures, unconditioned factory floors, or mobile applications.

The ruggedized design and industrial-grade components ensure reliable performance even under challenging thermal conditions, minimizing downtime.