Appendix a, Tcp/ip communications, An introductory note – Extron Electronics MS9500 HD FrEND Plus User Manual
Page 85: Ethernet communication, Rs-232, Ethernet, Tcp/ip addressing, Appendix a: tcp/ip communications
MS9500GL HD FrEND Plus
Appendix A: TCP/IP Communications
Appendix A:
TCP/IP Communications
An Introductory Note
A full explanation of Ethernet communication is beyond the scope of this user guide. However, the following
details should provide enough information to understand the basic concepts.
Ethernet Communication
The MS9500GL can be controlled via RS-232 and Ethernet connections. Most users will be familiar with RS-232
communication. Ethernet communication, while not a new development, is still a mystery to many.
Let’s compare the differences between RS-232 and Ethernet data:
RS-232
Designed for one port to connect to one device
Messages transmitted as a whole
No way to guarantee receipt of data
Maximum data transfer speeds of around 115 Kbps
Ethernet
Designed to connect many devices (called a “network”) on a single port
Messages transmitted in “packets”, as network traffic allows
Each device in the network has a unique address, ensuring that a data message can be received by the
target device
Maximum data transfer speeds greater than 100 Mbps
Several types of Ethernet communications exist. The protocol, or language, that the MS9500GL uses for its
Ethernet communication is called TCP/IP (Transmission Control Protocol and Internet Protocol).
TCP/IP Addressing
Each device on a network requires a unique address to ensure that data can be received by the device it is intended
to reach. Two methods exist for assigning an Ethernet addresses in a TCP/IP network:
1. Dynamic assignment
2. Static assignment
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