The Moxa NPort 6400/6600 Series offers secure and versatile terminal servers with 4, 8, 16, or 32 RS-232/422/485 ports. Designed for industrial environments, they ensure encrypted serial-to-Ethernet communication using TLS/SSH and meet IEC 62443 security standards.

An integrated 64 KB port buffer stores serial data in the event of Ethernet outages and automatically resends the data once the connection is restored. SD card support is available for extended buffer storage. NPort 6600 models also feature an LCD panel for easy on-site configuration (standard models only).

These servers support a wide range of operation modes including Real COM, TCP/UDP Client and Server, Pair Connection, and Terminal – both in standard and secure versions. Optional network expansion modules offer redundant Ethernet via RJ45 or fiber.

Technical Details:

Interfaces:

• Serial Ports: 4/8/16/32 RS-232/422/485
• Connectors: DB9 (NPort 6450), 8-pin RJ45 (NPort 6600)
• Ethernet: 1x 10/100BaseT(X), optional NM expansion (RJ45/fiber)

Protocols & Security:

• IPv4/IPv6, TCP/IP, UDP, HTTP/S, SNMP v1/v2c/v3, SSH v2, TLS 1.2, RADIUS, TACACS+
• Encryption: AES-128/256, SHA-1/256/384, RSA-1024, HMAC

Communication:

• Baudrate: 50 bps to 921.6 kbps (non-standard rates supported)
• Data Bits: 5, 6, 7, 8
• Stop Bits: 1, 1.5, 2
• Parity: None, Even, Odd, Space, Mark
• Flow Control: RTS/CTS, DTR/DSR, XON/XOFF
• Port Buffer: 64 KB per port, SD card expandable (up to 32 GB)

Mechanical & Environment:

• Housing: Metal
• Mounting: Rack (6600), DIN/Wall/Desktop (6450)
• Operating Temp: -40 to 85°C (model dependent)
• Dimensions (6600): 440 x 195 x 44 mm (w/o ears)
• Weight: up to 3.6 kg

Reliability:

• MTBF: up to 850,000 hours
• Alarm Contact: 1 A @ 24 VDC
• Integrated WDT, RTC, audible alarm

Certifications:

• EN 55032/35, FCC Part 15B Class A
• IEC 61000-4-x, UL 60950-1, NEMA TS2
• RoHS, WEEE, CRoHS

Package Contents:

• 1 x NPort 6400/6600 terminal server
• 2 x rack-mounting ears (6600 only)
• 1 x DB9 to RJ45 cable (6600 only)
• 1 x power adapter or cable (depending on model)
• 1 x quick installation guide
• 1 x warranty card