The IMC-21 is an industrial media converter housed in a plastic enclosure designed to bridge Ethernet 10/100BaseT(X) networks with either single-mode or multimode fiber optics at 100BaseFX or 10BaseT and 10BaseFL. Devices in this series feature a wide operating temperature range (-10° to +60°C), compact dimensions (only 25 x 109 x 97 mm), low cost, and DIN rail mounting. This combination of features makes them an ideal solution for economically transitioning from twisted-pair to fiber optics in challenging industrial environments (both in factories and within other equipment).
All Moxa devices for industrial Ethernet networks are known for their extremely high reliability and have been successfully installed in key locations in enterprises worldwide for many years.
Link Fault Pass-Through
IMC-21 series media converters feature an implemented Link Fault Pass-Through mechanism. In the event of a connection loss on one side, this mechanism automatically closes the connection on the other side of the converter, immediately propagating information about the failure to end stations and informing them of the futility of persistently attempting to establish a connection via that path. Thanks to this mechanism, the link will automatically restore once the fault is removed. In converters without this mechanism, information about the connection loss is not propagated further along the path, causing end stations to continue trying to communicate through that route despite the physical connection loss.
Small and inexpensive twisted-pair to fiber optic converter for industrial applications: