Lightware MMX6x2-HT200 User Manual

Page 76 / 119 Section 8. LW3 Programmers’ reference
8. LW3 Programmers’ reference
8.1. Overview
Lightware 3 (LW3) protocol is used by the 25G hybrid matrix, the MODEX family and the
new series of Lightware TPS products, including the MMX6x2-HT series matrices. The
protocol (LW3) is ASCII-based and all commands are terminated with a carriage return (Cr,
‘\r’) and line feed (Lf, ‘\n’) pair. It is organized as a tree structure that provides outstanding
flexibility for implementing a human readable, but programmatically still ease to parse,
which is suitable for different products with a different feature list.
In order to implement a flexible, easy-to-use protocol that is straightforward to adapt to new
devices and provides outstanding scalability and sustainability, we decided to organize all
settings, parameters and properties of the device to a tree structure with ‘nodes’,
‘properties’ and ‘methods’.
8.1.1. Elements of the tree structure
ATTENTION!
All names and values are case-sensitive. The space character is replaced by the ‘’
character in the elements and commands descriptions.
Node
 The basic building block of the tree structure is the ‘node’.
 The node can have multiple child nodes, but only one parent.
 The tree has only one root the ‘root node’.
 The leaves of the tree are also nodes, which do not have child nodes.
 The nodes are separated by a slash (‘/’) character.
 All the slashes are ‘right slashes’, no backslash is used.
 The identifier of the root node is a slash (‘/’)
 The node name can contain the elements of the English alphabet and numbers.
 Recommended convention for case sensitivity:
- Fix nodes (that cannot be altered) are capitalized.
- User created nodes can contain both lowercase and capital letters, no
restrictions.
 The path of a node has to contain all parent nodes from the root node.
Format (the root node): nX/
Path: nX/[nodeName]/[nodeName]/[nodeName]
Legend: ‘n’: node
‘X’ can be:
‘-’: default for a node,
‘m’: this is a manual for the node,
‘E’: this is an error message for the node.
's' this is a symlink node
'v' this node has virtual children
'r' this is a remote node
INFO
All parent nodes must be listed in the path of a node.

Lightware MMX6x2-HT200 Specifications

General

Brand	Lightware
Model	MMX6x2-HT200
Category	Matrix Switcher
Language	English