CrispTech Moxa NPort S8455I-MM-SC ethernet switch and server

The Moxa NPort S8455I-MM-SC combines an ethernet switch and serial device server in a single solution, with two fibre ethernet ports, three ethernet ports and four RS-232/422/485 serial ports. Its compact size saves cabinet space and the all-in-one design reduces overall power consumption.

The device is suitable for traffic monitoring, control, solar power plants and wind-farm applications.

The device can network existing serial devices by connecting up to four serial devices through each of the ethernet ports. Data transmission between the serial and ethernet interfaces is bi-directional.

The built-in managed ethernet switch supports QoS, IGMP-snooping/GMRP, VLAN, port trunking, SNMPv1/v2c/v3 and IEEE 802.1X. Ethernet redundancy, which is used to increase the reliability and availability of industrial ethernet networks, is provided by turbo ring technology (recovery time <20 ms) or RSTP/STP (IEEE 802.1w/D).

It may be inconvenient to use one large ring for redundancy if the network devices are remote and spread out. A ring coupling feature solves this issue by connecting distributed devices into smaller, more manageable turbo rings that can still communicate with each other without a control line.