The Moxa NPort 6400/6600 Series provides secure, reliable and flexible serial-to-Ethernet connectivity for up to 32 serial RS-232/422/485 devices. Designed for demanding industrial environments, it supports modern encryption standards (TLS, SSH) and offers IEC 62443-compliant security features.

Key advantages include a built-in 64 KB port buffer to prevent data loss during network outages, and an LCD panel (on standard 6600 models) for easy, local configuration. Each serial port can be individually configured for RS-232, RS-422, or RS-485 modes, and supports a wide range of standard and non-standard baudrates.

Additionally, adjustable RS-485 resistors via DIP switches enhance signal quality in challenging setups, while support for IPv6 and Ethernet redundancy ensures robust networking.

Technical Details:

Interfaces:

• Serial Ports: 4 / 8 / 16 / 32 (RS-232/422/485)
• Connectors: DB9 (NPort 6450), 8-pin RJ45 (NPort 6600)
• Per-port configuration: RS-232, RS-422, RS-485
• Baudrate: 50 bps to 921.6 kbps, including non-standard rates
• Port Buffer: 64 KB per port, expandable via SD card (up to 32 GB)

Networking:

• Ethernet: 1x 10/100BaseT(X), Auto MDI/MDI-X, 1.5 kV isolation
• Expansion: NM modules for RJ45 or fiber optic (100BaseFX)
• IPv6 support
• Redundancy: STP, RSTP, Turbo Ring (with optional network module)

Operation Modes:

• Standard: Real COM, TCP Server, TCP Client, Pair Connection, Terminal, UDP, Reverse Telnet, PPP, RFC2217
• Secure: Secure Real COM, Secure TCP Client/Server, Secure Pair Connection, SSH, HTTPS

Security Features:

• Authentication: Local, RADIUS, TACACS+
• Encryption: AES-128/256, HMAC, RSA-1024, SHA-1/256/384
• Protocols: HTTPS (TLS 1.2), SNMPv3, SSHv2

System Management:

• Configuration via Web Console (HTTP/HTTPS), Telnet/SSH, DSU, MCC Tool
• LCD display & push-button configuration (standard 6600 models only)

Hardware:

• Housing: Metal, supports Rack (6600), DIN-rail, or wall mount (6450)
• Dimensions: e.g. NPort 6600-8: 440 x 195 x 44 mm, 3.46 kg
• Operating Temperature: 0 to 55 °C (standard), -40 to 85 °C (HV models)
• Relative Humidity: 5–95% (non-condensing)

Certifications:

• EMC: IEC 61000-4-x, CISPR 32, FCC Part 15B Class A
• Safety: UL 60950-1, NEMA TS2, RoHS, WEEE
• Environmental: IEC 60068 vibration and freefall tests
• MTBF: up to 850,000 hours (model dependent)

Package Contents:

• 1x NPort 6400/6600 terminal server
• 2x rack-mounting ears (6600 only)
• 1x DB9 to 8-pin RJ45 cable (6600 only)
• 1x power cable or adapter (depending on model)
• 1x quick installation guide
• 1x warranty card