Ethernet RS-232/422 COM Module
Crestron
CEN-COM
Glossary of Terms
Default Router
Default router is the address of the router the device uses to communicate with
devices that are not connected directly to the local network.
IP Address
Internet protocol address is a unique number that is used to represent every single
computer in a network. All the computers on the internet have a unique IP address.
The format of the IP address is four numbers separated by dots (e.g., 198.123.456.7).
IP ID
The IP ID is a two-digit hexadecimal number that is used to differentiate a given
device from a group of Ethernet devices in a control system with the same IP
address. Just as the Net ID is used to distinguish between identical devices within a
SIMPL Windows program, the IP address for a specific IP ID in the control system’s
IP table must be set to the IP address of the given device. Furthermore, the IP ID in
the given device’s static master table must be set to the IP address of the control
system.
IP Mask
Internet protocol mask is a number that is used in conjunction with the IP address to
determine whether or not a particular IP address is on the local network. If it is on
the local network, communicate directly. Otherwise, use a router attached to the IP
network. The IP mask for any device should be assigned by whoever manages the
local network. The format of the IP mask is four numbers separated by dots (e.g.,
255.255.255.0).
IP MTU
IP MTU is the maximum packet size that the device can transmit. It is not necessary
to change this value from 1500 for an all Ethernet network.
MAC Address
MAC address is a unique hardware address assigned to every network device in use.
The MAC address is assigned by Crestron at the factory and is never changed.
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Glossary of Terms
Operations Guide - DOC. 5719
