Moxa CP-118U Universal Serial Device Server

The Moxa CP-118U Universal Serial Device Server provides robust, high-performance serial-to-Ethernet connectivity, essential for modern industrial automation and control systems. This device server offers unparalleled flexibility with its 8 RS-232/422/485 serial ports, supporting data rates up to 921.6 kbps, and features a broad operating temperature range of -40 to 75°C, making it ideal for demanding environments. Its compact design and DIN-rail mounting simplify integration into existing infrastructure.

Product Specifications

| Feature              | Specification                                 |

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

| Serial Ports         | 8 x RS-232/422/485 ports                      |

| Data Rate            | Up to 921.6 kbps                              |

| Operating Temperature| -40 to 75°C                                   |

| Power Input          | 12-48 VDC                                     |

| Network Interface    | 1 x 10/100Base-T (RJ45)                       |

| Protocols            | TCP/IP, UDP, HTTP, DHCP, ARP, BOOTP, Telnet,     |

|                      | RFC2217, Modbus TCP                          |

| Management           | Web Console, Telnet Console, Windows Utility |

| Mounting             | DIN-rail, Wall-mount                          |

| Dimensions           | 149 x 120 x 47 mm                             |

Core Features & Market Positioning

The Moxa CP-118U distinguishes itself through its high port density and versatile serial interface configuration, allowing for the simultaneous connection of multiple serial devices to an Ethernet network. This capability directly addresses the growing need for seamless integration of legacy serial equipment with IP-based systems in industrial settings. Its robust industrial design, including a wide operating temperature range and durable metal housing, positions it as a reliable solution for critical applications where downtime is not an option. The integrated security features, such as password protection and secure communication protocols, further enhance its appeal for enterprises prioritizing data integrity and network security. Moxa's reputation for manufacturing high-quality industrial networking products reinforces the CP-118U's market position as a dependable and advanced device server.

Key Application Scenarios

Industries requiring extensive serial device connectivity will find the Moxa CP-118U exceptionally valuable. It is a prime candidate for applications in manufacturing automation, where numerous PLCs, sensors, and actuators need to be networked. In the energy sector, it facilitates the remote monitoring and control of substations, power generation equipment, and smart grid devices. Transportation systems benefit from its ability to connect traffic signal controllers, surveillance cameras, and passenger information displays to a central network. Furthermore, building automation systems can leverage the CP-118U to integrate HVAC controls, security systems, and access control devices, all while benefiting from its reliable performance and easy deployment.

Practical System Integration Guidance

Integrating the Moxa CP-118U into an industrial network is straightforward. The device server typically connects to a network switch via its RJ45 Ethernet port. For serial device connections, users must select the appropriate RS-232, RS-422, or RS-485 configuration for each port, often selectable via DIP switches or software. Power is supplied via a 12-48 VDC input, ensuring compatibility with standard industrial power sources. Initial configuration is usually performed using Moxa's Windows-based utility or a web browser, allowing users to assign an IP address, configure serial port parameters (baud rate, data bits, parity, stop bits), and set up network protocols. For example, to connect an RS-485 device, one would configure the port for RS-485 mode and wire the A, B, and GND lines to the corresponding terminals on the serial device. The device server supports various operating modes, including TCP Server, TCP Client, and UDP, which need to be configured based on the application's communication requirements.

Operation and Risk Mitigation

Operating the Moxa CP-118U involves ensuring stable power supply and proper network connectivity. A critical aspect of risk mitigation is to secure the device server against unauthorized access. This can be achieved by implementing strong passwords, disabling unnecessary services, and isolating the device server on a dedicated industrial network segment. Firmware updates should be applied regularly to patch any security vulnerabilities. In case of communication failures, common troubleshooting steps include verifying physical connections (Ethernet cable, serial cables), checking IP address configurations, and ensuring that the serial port settings on both the device server and the connected serial device match exactly. Over-voltage protection on the power input is recommended to prevent damage from power surges, and the wide operating temperature range helps mitigate risks associated with extreme environmental conditions.

Scalability & Long-Term Value

The Moxa CP-118U offers significant scalability for growing industrial networks. Its multi-port design allows for the consolidation of numerous serial devices onto a single Ethernet connection, reducing cabling complexity and infrastructure costs. As facilities expand, additional CP-118U units can be easily added to accommodate more serial devices. Compatibility with Moxa's broader portfolio of industrial networking solutions ensures seamless integration into larger, more complex systems, including those leveraging Industrial Internet of Things (IIoT) platforms. The support for standard industrial protocols like Modbus TCP enhances its long-term value by ensuring interoperability with a wide range of automation equipment and supervisory control and data acquisition (SCADA) systems. Moxa's commitment to product longevity and ongoing support further solidifies the CP-118U as a wise investment for future-proofing industrial connectivity.

Frequently Asked Questions (FAQs)

What is the maximum data rate for the serial ports on the Moxa CP-118U?

The Moxa CP-118U supports a maximum serial data rate of 921.6 kbps. This high throughput is crucial for demanding industrial applications that require fast data exchange between serial devices and the network. It ensures that even high-speed communication needs can be met efficiently.

This advanced data rate capability allows for the rapid transfer of data from sensors, instruments, and control devices. It is particularly beneficial for applications involving real-time monitoring or complex control loops where latency is a critical factor.

Meeting this specification ensures that the CP-118U can reliably handle the communication demands of modern industrial automation systems. It reduces potential bottlenecks and improves overall system responsiveness.

How do I configure the serial port modes (RS-232, RS-422, RS-485) on the CP-118U?

Serial port modes are typically configured using DIP switches located on the device itself or through Moxa's Windows-based utility software. The documentation will detail which switch settings correspond to RS-232, RS-422, and RS-485.

Once the physical mode is set, further parameters like baud rate, data bits, parity, and stop bits are configured via the device server's web interface or command-line interface. These settings must precisely match the connected serial device.

This flexibility allows a single CP-118U unit to interface with a diverse array of serial equipment, simplifying inventory and deployment in environments with mixed serial communication standards.

What industrial protocols does the Moxa CP-118U support for network communication?

The CP-118U supports essential industrial protocols including TCP/IP, UDP, and Modbus TCP. It also includes support for HTTP, DHCP, ARP, BOOTP, and Telnet, facilitating network management and interoperability.

Modbus TCP is particularly important for industrial automation, allowing seamless integration with SCADA systems and PLCs that utilize this prevalent industrial communication standard. This ensures compatibility with a wide range of existing industrial infrastructure.

The inclusion of RFC2217 further enhances its utility by enabling remote serial port re-configuration over the network, adding a layer of operational flexibility and remote management capability.

Can the Moxa CP-118U operate in extreme temperature environments?

Yes, the Moxa CP-118U is designed for industrial use and boasts a wide operating temperature range of -40 to 75°C. This robustness makes it suitable for deployment in harsh environments without compromising performance.

This wide temperature tolerance is critical for applications located in outdoor enclosures, unconditioned factory floors, or other settings prone to significant temperature fluctuations. It minimizes the risk of hardware failure due to thermal stress.

By operating reliably across such an extensive temperature spectrum, the CP-118U ensures consistent connectivity and data integrity, even under the most challenging industrial conditions.

How does the Moxa CP-118U facilitate integration with IIoT platforms?

The CP-118U supports standard IP-based networking and protocols like Modbus TCP, which are foundational for IIoT communication. This allows it to act as a gateway, bridging legacy serial devices to modern IIoT platforms.

By converting serial data into Ethernet packets, it enables the collection of data from a multitude of industrial assets. This data can then be transmitted to cloud-based IIoT platforms for analysis, visualization, and predictive maintenance.

Its reliability and support for secure communication enhance the trustworthiness of the data transmitted from the edge devices to the broader IIoT ecosystem, contributing to more informed decision-making.

What power input requirements does the Moxa CP-118U have?

The Moxa CP-118U accepts a wide DC power input range, typically from 12 to 48 VDC. This broad range provides flexibility for integration with various industrial power supply systems.

Ensuring compatibility with a wide voltage input helps simplify installation and reduces the need for specialized power converters in many industrial settings. It enhances its adaptability across different facility power infrastructures.

It is advisable to use a regulated power supply within this range to ensure stable operation and prolong the lifespan of the device server, especially in environments with potential power fluctuations.

What are the physical mounting options for the Moxa CP-118U?

The CP-118U offers versatile mounting options to suit diverse industrial cabinet and panel configurations. It is designed for easy DIN-rail mounting, a standard in industrial control panels, ensuring quick and secure installation.

Additionally, it supports wall-mounting capabilities, providing flexibility for deployment in scenarios where DIN-rail mounting is not feasible or optimal for access and cable management.

These varied mounting choices simplify the physical integration of the device server into existing or new industrial infrastructure, catering to different installation requirements and spatial constraints.

How secure is the Moxa CP-118U against unauthorized network access?

The CP-118U incorporates security features to protect against unauthorized access. These typically include password protection for management interfaces and support for secure communication protocols.

Implementing strong, unique passwords for both the web and Telnet management consoles is a fundamental security measure. Disabling unused services further reduces the potential attack surface.

For enhanced network security, it is recommended to deploy the device server within a segmented industrial network and utilize firewall rules to restrict access to authorized IP addresses and ports.

What is the warranty period typically offered for Moxa industrial device servers like the CP-118U?

Moxa generally offers a substantial warranty period for its industrial networking products, often ranging from 2 to 5 years. This reflects their confidence in the product's reliability and durability.

A longer warranty period provides peace of mind for industrial users, assuring them of support and product longevity. It is always best to consult the specific product documentation or Moxa's sales information for the exact warranty terms.

This commitment to product quality and extended warranty coverage highlights Moxa's dedication to providing robust solutions for critical industrial applications where continuous operation is paramount.

Can the CP-118U be managed remotely over the network?

Yes, the Moxa CP-118U supports remote management through various methods. This includes access via its web console and Telnet console interfaces, allowing configuration and monitoring from a central location.

The ability to remotely manage the device server streamlines maintenance tasks, reduces the need for on-site visits, and improves operational efficiency, especially in distributed industrial environments.

Furthermore, the support for protocols like RFC2217 allows for remote configuration of the serial port parameters themselves over the network, offering a high degree of operational flexibility and management.