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Solutions > Serial to Ethernet Communication

Serial to Ethernet Communication

The trend is for substation networks to rely on Ethernet connections, but many devices still communicate with SCADA systems over serial interfaces. Moxa's terminal servers connect serial devices directly to Ethernet networks, providing an excellent answer to current trends and evolving requirements.

The evolution of substation communications

The trend for substation communication is beginning to migrate to Ethernet connections. Even today, many devices in power substations use a serial interface to communicate with remote SCADA systems. Due to the huge investment involved with substation communication systems and the necessity for system reliability, the migration from traditional serial to Ethernet is an issue for this market. Terminal servers connect serial devices directly to Ethernet and are an excellent solution to current trends and evolving requirements.

20 years of experience with serial connectivity

Moxa has 20 years of experience with serial-enabling technology, and continues to provide the best solution for EMS, DMS, and other systems in the electric power utility market. Customers include industry leaders such as ABB, Siemens, Areva, Schneider, and Nari.

Secure terminal server

To address EMI in substation environments, most system integrators use fiber optic cable to replace Cat. 5 cable. The NPort 6000 series provides 2 fiber optic Ethernet ports for EMI noise immunity. In addition, the NPort 6000 series supports 802.3w RSTP (rapid spanning tree protocol) to connect two Ethernet ports to different Ethernet switches. One Ethernet port can be configured as a primary path and the other as a back-up path. If the primary path is damaged, the NPort 6000 will activate the back-up connection immediately to ensure zero data loss during communication.

Dual LAN terminal server

The CN2650 provides 2 Ethernet ports with separate MAC addresses that can be configured to send copies of the same serial data over different routes. Dual LANs provide enhanced system reliability without data loss.

Advanced Modbus gateway

Modbus is the standard protocol for communication between many industrial devices, such as PLCs, HMIs, meters, and drivers. The MGate MB3000 is specially designed to integrate Modbus TCP and Modbus RTU/ASCII networks, providing one Ethernet connection and up to four serial ports. With the MGate MB3000, Modbus RTU/ASCII devices can easily connect over Ethernet to HMIs or SCADA systems, for easier system migration.

Moxa's Serial to Ethernet Servers

CN2650	NPort 6000 Series	MGate MB3000

RS-232/422/485 Terminal Server with Dual LAN Redundancy	Secure Terminal Server with Dual Fiber Optic LAN	Advanced Modbus Gateway

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