Moxa PT-7728-F-HV Specification Guide

Industry-specific Ethernet Switches

w w w. m o x a . c o m

The PowerTrans PT-7728 is designed to meet the demands of power 
substation automation systems (IEC 61850-3, IEEE 1613), and 
railway applications (EN 50121-4), and also features critical packet 
prioritization (GOOSE, SMVs, and PTP) and a built-in MMS server. The 
PT-7728’s Gigabit and Fast Ethernet backbone, redundant ring, and 
24 VDC, 48 VDC, or 110/220 VDC/VAC dual isolated redundant power 

•  Built-in MMS server for integration with power SCADA systems
•  Switch data modeling based on the IEC 61850-90-4 standard
•  IPv6 Ready logo awarded (IPv6 Logo Committee certified) 
•  Software-based IEEE 1588v2 PTP (Precision Time Protocol) for 

time synchronization of networks 

•  VLAN Unaware: Supports priority-tagged frames to be received by 

specific IEDs

•  DHCP Option 82 for IP address assignment with different policies 
•  EtherNet/IP and Modbus/TCP industrial Ethernet protocols 

supported 

•  Turbo Ring and Turbo Chain (recovery time < 20 ms @ 250 

switches), RSTP/STP, and MSTP for network redundancy 

supplies increase the reliability of your communications and save on 
cabling/wiring costs. The modular design of the PT-7728 also makes 
network planning easy, and allows greater flexibility by letting you 
install up to 4 Gigabit ports and 24 Fast Ethernet ports. Along with the 
optional front or rear wiring, these features together make the PT-7728 
suitable for a variety of industrial applications.

•  IGMP snooping and GMRP for filtering multicast traffic from 

industrial Ethernet protocols 

•  Supports advanced VLAN capability with Q-in-Q tagging
•  IEEE 802.3ad, LACP for optimum bandwidth utilization 
•  Bandwidth management prevents unpredictable network status  
•  Multi-port mirroring for online debugging 
•  Automatic warning by exception through email, relay output 
•  RMON for efficient network monitoring and proactive capability 
•  Automatic recovery of connected device’s IP addresses 
•  Line-swap fast recovery 
•  Configurable by web browser, Telnet/serial console, CLI, Windows 

utility, and ABC-01 automatic backup configurator

•  User passwords with multiple levels of security protect against 

unauthorized configuration

•  SSH/HTTPS is used to encrypt passwords and data
•  Lock switch ports with 802.1X port-based network access control 

so that only authorized clients can access the port

•  Disable one or more ports to block network traffic

•  802.1Q VLAN allows you to logically partition traffic transmitted 

between selected switch ports

•  Secure switch ports so that only specific devices and/or MAC 

addresses can access the ports

•  RADIUS/TACACS+ allows you to manage passwords from a central 

location

•  SNMPv3 provides encrypted authentication and access security

Slot 1

Slot 2

Slot 3

Slot 4

›

›

›

›

›

›

›

›

Standards: 

IEEE 802.3 for 10BaseT 

IEEE 802.3u for 100BaseT(X) and 100BaseFX 

IEEE 802.3ab for 1000BaseT(X) 

IEEE 802.3z for 1000BaseX 

IEEE 802.3x for Flow Control