Advantech has introduced the EKI-1521-BE and EKI-1522 Serial Device Servers, which allow RS-232/422/485 serial devices to be remotely monitored, managed and controlled over Ethernet and Internet Protocol (IP) networks.
Equipped with dual 10/100Base-TX Ethernet ports and dual Media Access Controllers (MACs), these devices ensure data transmission even in the event of a network link failure.
Moreover, with redundant Ethernet connections, communication is not interrupted in the event of a network problem. With one connection automatically assigned as primary and the other as backup, loss of the primary connection initiates an immediate and automatic switch-over to the backup, ensuring data integrity and peace-of-mind.
The EKI-1521-BE and EKI-1522 offer a number of conventional operating modes that allow connections to be initiated by either attached serial devices or remote Ethernet hosts using both UDP/IP and TCP/IP protocols. For applications beyond simple point-to-point connections, two new multi-access modes allow one-to-many and many-to-one communications. The first allows up to five Ethernet hosts to access a single serial device and the second allows a single serial device to simultaneously send data to as many as 16 Ethernet-connected hosts.
Serial transmission speeds have been increased to 921Kbps, allowing a much broader range of serial devices to be network enabled. Optimisations in serial to Ethernet handling have yielded an ultra fast round-trip latency of less than 10 milliseconds where network traffic is not an issue, allowing the use of timing-sensitive serial protocols and increased polling rates.
The servers are packaged in a compact and thin DIN-rail mount chassis. They are ruggedised for demanding industrial applications with 4,000 VDC Ethernet ESD protection, dual 12 to 48 VDC power inputs with power line surge (EFT) protection of 3,000 VDC, and feature an operating temperature range of 0 to 60° C to ensure system uptime.