
9-13
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NPort® S8455 Series
Device Connectivity
Serial-to-Ethernet Device Servers >
9
Ordering Information
Ethernet Switch Specications
Pin Assignment
PIN RS-232
1 DSR
2 RTS
3 GND
4 TxD
5 RxD
6 DCD
7 CTS
8 RTS
Console Port (RJ45)
PIN RS-232 RS-422/485-4w RS-485-2w
1 DCD TxD-(A) –
2 RxD TxD+(B) –
3 TxD RxD+(B) Data+(B)
4 DTR RxD-(A) Data-(A)
5 GND GND GND
6 DSR – –
7 RTS – –
8 CTS – –
Serial Port (DB9 male connector)
PIN Signal
1 RXD+
2 RXD-
3 TXD+
4 –
5 –
6 TXD-
7
8
Ethernet Port (RJ45)
DB9 male connector
1 2 3 4 5
6 7 8 9
8-pin RJ45 connector
1
8
Ethernet Interface
Standards:
IEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X) and 100Base FX
IEEE 802.3x for Flow Control
IEEE 802.1D for Spanning Tree Protocol
IEEE 802.1w for Rapid STP
IEEE 802.1Q for VLAN Tagging
IEEE 802.1p for Class of Service
IEEE 802.1x for Authentication
IEEE 802.3ad for Port Trunk with LACP
Network Protocols: ICMP, IP, TCP, UDP, ARP, Telnet, DNS, HTTP,
SMTP, SNTP, IGMPv1/v2 device, GVRP, SNMPv1/v2c/v3, DHCP
Server/Client, DHCP Option 82, BootP, TFTP, SNTP, SMTP, RARP,
GMRP, LACP, RMON
MIB: MIB-II, Ethernet-Like MIB, P-BRIDGE MIB, Q-BRIDGE MIB,
Bridge MIB, RSTP MIB, RMON MIB Group 1, 2, 3, 9
Flow Control: IEEE 802.3x flow control, back pressure flow control
interface
Switch Properties
Priority Queues: 4
Max. Number of Available VLANs: 64
VLAN ID Range: VID 1 to 4094
IGMP Groups: 256
Optical Fiber Interface
100BaseFX
Multi-mode Single-mode
Wavelength
1300 nm 1310 nm
Max. TX
-14 dBm 0 dBm
Min. TX
-20 dBm -5 dBm
RX Sensitivity
-32 dBm -34 dBm
Link Budget
12 dB 29 dB
Typical Distance
5 km
a
4 km
b
40 km
c
Saturation
-6 dBm -3 dBm
a. 50/125 μm, 800 MHz*km fiber optic cable
b. 62.5/125 μm, 500 MHz*km fiber optic cable
c. 9/125 μm, 3.5 PS/(nm*km) fiber optic cable
Switch Interface
RJ45 Ports: 10/100BaseT(X) auto negotiation speed, F/H duplex mode,
and auto MDI/MDI-X connection
DIP Switches: Turbo Ring, Master, Coupler, Reserve
Alarm Contact: 2 relay outputs with current carrying capacity of 1A @
24 VDC
Available Models
NPort S8455I-MM-SC: 4 RS-232/422/485 ports, 3 10/100M Ethernet ports, 2 100M multi-mode fiber
ports with SC connector, 15 KV ESD, 12-48 VDC, 2 KV isolation protection, 0 to 60°C operating
temperature
NPort S8455I-SS-SC: 4 RS-232/422/485 ports, 3 10/100M Ethernet ports, 2 100M single-mode fiber ports
with SC connector, 15 KV ESD, 12-48 VDC, 2 KV isolation protection, 0 to 60°C operating temperature
NPort S8455I-MM-SC-T: 4 RS-232/422/485 ports, 3 10/100M Ethernet ports, 2 100M multi-mode fiber
ports with SC connector, 15 KV ESD, 12-48 VDC, 2 KV isolation protection, -40 to 75°C operating
temperature
NPort S8455I-SS-SC-T: 4 RS-232/422/485 ports, 3 10/100M Ethernet ports, 2 100M single-mode fiber
ports with SC connector, 15 KV ESD, 12-48 VDC, 2 KV isolation protection, -40 to 75°C operating
temperature
Optional Accessories (can be purchased separately)
Mxview: Moxa industrial network management software
Package Checklist
• NPort S8455 device server
• Documentation and software CD
• Quick installation guide (printed)
• Warranty card
Dimensions
Unit: mm (inch)
73 (2.87)
143 (5.64)
134 (5.28)
105 (4.13)
113.8 (4.48)
2 (0.08)
2 (0.08)
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