General
Fibre optic connector	SC

The Moxa IMC-21A-S-SC-T is an industrial media converter that converts Ethernet signals between a 10/100BaseT(X) twisted-pair connection and a 100BaseFX fiber optic connection. It is used to connect network segments that use different transmission media, enabling the integration of devices into existing networks, particularly in environments with high requirements for reliability and operating temperature. The converter is housed in a robust aluminum housing suitable for industrial applications.

Applications

The IMC-21A-S-SC-T is designed for use in industrial networks where stable and reliable data transmission over long distances is required. It is commonly used in factories, power supply facilities, transportation systems, or other environments where connecting Ethernet devices via fiber optic cables is necessary to overcome interference, electromagnetic interference, or long distances. The operating temperature range of -40 to 75 °C makes it suitable for extreme climatic conditions, such as those found in outdoor areas or machine rooms.

Functions and Features in Detail

The converter features an SC connector for the fiber optic side, with the model designation "S" indicating single-mode fiber. The twisted-pair interface supports 10/100BaseT(X), enabling connection to standard Ethernet devices. Operation can be set via DIP switches between full-duplex (FDX), half-duplex (HDX), fixed speed (10/100 Mbit/s), or automatic detection (Auto). The Link Fault Pass-Through (LFP) function ensures that in the event of a fiber optic connection failure, the status of the twisted-pair port is correspondingly indicated, simplifying network troubleshooting.

Technology Explained Simply

The media converter operates on Layer 1 of the OSI model architecture, i.e., at the physical layer. It converts the electrical signals from the twisted-pair connection into optical signals for fiber optic transmission and vice versa. The operating voltage is not specified in the text, but the operating temperature range of -40 to 75 °C is typical for industrial applications. The aluminum housing provides mechanical protection and heat dissipation, increasing the device's lifespan in demanding environments.

Compatibility and Accessories

The converter is compatible with standard Ethernet networks and can be connected to any device equipped with a 10/100BaseT(X) interface. The fiber optic side requires a single-mode cable with SC connector. Connection is made via the integrated interfaces without additional adapters or modules.

Mounting and Installation

Installation is performed using the integrated connectors. The DIP switches allow manual configuration of operating parameters, which must be adjusted according to the network environment. The delivery includes a printed quick installation guide and a warranty card.

Advantages in Operation

Using the IMC-21A-S-SC-T enables reliable data transmission over fiber optic, which is immune to electromagnetic interference. The wide operating temperature range ensures high availability in various environments. The LFP function supports network administration by making the connection status transparent. The simple configuration via DIP switches makes the converter easy to handle even for users without in-depth networking knowledge.