Features and Benefits

• Simple solution for connecting serial devices to a network
• Secure operation modes for Real COM, TCP Server, TCP Client, Pair Connection, Terminal, and Reverse Terminal
• Any Baudrate supported with high precision
• Choice of network medium: 10/100BaseTX or 100BaseFX
• Automatic RS-485 data direction control with Moxa's patented ADDC®
• Port buffers for storing serial data when the Ethernet is off-line
• SD slot for expanding port buffer memory

Overview

The 2-port NPort® 6250 device servers use the SSL and SSH protocols to transmit encrypted serial data over Ethernet. Models are available for connecting to a 10/100BaseTX copper Ethernet or 100BaseTX fiber network. Both single-mode and multi-mode fiber are supported.

No Data Loss if Ethernet Connection Fails

The NPort® 6250 device servers help guarantee reliability byproviding users with secure serial-to-Ethernet data transmission anda customer-oriented hardware design. If the Ethernet connection fails,the NPort® 6250 will queue all serial data in its internal 64 KB port buffer. When the Ethernet connection is re-established, the NPort®6250 will immediately release all data in the buffer in the order that itwas received. Users can increase the port buffer size by installing anSD card.

• Ethernet Interface (NPort 6250)
Number of Ports	1
Speed	10/100 Mbps, auto MDI/MDIX
Connector(s)	8-pin RJ45
Magnetic Isolation Protection	1.5 KV built-in

• Optical Fiber Interface, NPort 6250-S-SC 6250-M-SC
Fiber Port(s)	100BaseFX, SC connector
Distance	Multi-mode: 0 to 2 km, 1310 nm (62.5/125 µm, 500 MHz*km) Single mode: 0 to 40 km, 1310 nm (9/125 µm, 3.5 PS/(nm*km))
Min. TX Output	Multi-mode: -20 dBm Single-mode: 0 to 40 km, -5 dBm
Max. TX Output	Multi-mode: -14 dBm Single-mode: 0 to 40 km, 0 dBm
Sensitivity	Multi-mode: -34 to -30 dBm Single-mode: -36 to -32 dBm

• Serial Interface
Serial Standards	RS-232/422/485
Number of Ports	2
Connector(s)	DB9 male
RS-485 Data Direction Control	ADDC™ (automatic data direction control)
Console Port	Serial port 1 doubles as RS-232 console port
ESD Protection	15 KV ESD protection for all signals

• Serial Communication Parameters
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
Baudrate	50 bps to 921.6 Kbps

• Serial Signals
RS-232	TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS-422	Tx+, Tx-, Rx+, Rx-, GND
RS-485-4w	Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w	Data+, Data-, GND

• Memory Expansion Slot
Slot Type	SD/MMC socket

• Software
Network Protocols	ICMP, IP, TCP, UDP, DHCP, BOOTP, Telnet, DNS, SNMP, HTTP, SMTP, ARP, SSH, SSL, PPPoE, DDNS, RIP
Security Protocols	DES, 3DES, AES, SSH, SSL, HTTPS, RADIUS, PAP, CHAP, TACACS+
Driver Support	Windows Real COM drivers (for Windows 95, 98, ME, NT, 2000, XP, 2003, Vista, XP x64, 2003 x64, Vista x64), Linux Real TTY driver, Fixed TTY drivers (for SCO Unix, SCO OpenServer, UnixWare 7, UnixWare 2.1, SVR 4.2, QNX 4.25, QNX 6, Solaris 10, FreeBSD, AIX 5.x, HP-UX 11i)
Configuration Options	Web Console, Serial Console, Telnet Console, Windows Search Utility

• Physical Characteristics
Enclosure	Aluminum (1 mm)
Weight	730 g
Dimensions	Without ears: 77 x 111 x 28 mm (3.30 x 4.37 x 1.1 in) With ears: 89 x 111 x 28 mm (3.50 x 4.37 x 1.1 in)

• Environmental Limits
Operating Temperature	0 to 55°C (32 to 131°F)
Operating Humidity	5 to 95% RH
Storage Temperature	-20 to 85°C (-4 to 185°F)
Surge Protection	15 KV ESD protection embedded

• Power Requirements
Input Voltage	12 to 48 VDC
Power Consumption	430 mA @ 12 V (max.)
Power Line Protection	1 KV burst (EN61000-4-4: EFT/B), 0.5 KV surge (EN61000-4-5)

• Regulatory Approvals
Safety	UL (UL60950-1), TÜV (EN60950-1)
EMC	CE (EN55022 Class A, EN55024), FCC Part 15 Subpart B Class A
EN61000-4-2 (ESD)	4 KV contact
EN61000-4-4 (EFT)	1 KV power
EN61000-4-5 (Surge)	2 KV power

• Reliability
Alert Tools	Built-in buzzer and RTC (real-time clock)
Automatic Reboot Trigger	Built-in WDT (watchdog timer)
MTBF (meantime between failures)	NPort 6250: 226128 hrs NPort 6250-M-SC: 225762 hrs NPort 6250-S-SC: 225762 hrs

• Warranty
Warranty Period	5 years
Details	See www.moxa.com/warranty

Ordering Info	Model No.	Description
Click here to order	NPort 6250	2-port RS-232/422/485 to Ethernet Secure Device Server
Click here to order	NPort 6250-M-SC	2-port RS-232/422/485 to one Multi Mode Fiber Ethernet Secure Device Server
Click here to order	NPort 6250-S-SC	2-port RS-232/422/485 to one Single Mode Fiber Ethernet Secure Device Server

Ordering Info	Model No.	Description
Click here to order	DK-35A	DIN-Rail Mounting Kit (35 mm)

Ordering Info	Model No.	Description
Click here to order	NP21101	DB25(M) to DB9(F) RS-232 Cable, 30 cm