User Guide
FOX RS 104 RS-232 Inserter • Remote Control 12
Remote Control
This section describes the remote control operation of the FOX RS 104, including:
• Simple Instruction Set Control
• HTML Operation
You can use Simple Instruction Set (SIS) commands or built-in HTML pages for operation 
and configuration of the inserter. You can remotely operate the inserter from a PC connected 
to the LAN port (item b on page 6).
Simple Instruction Set Control
Host-to-Unit Instructions
SIS commands consist of one or more characters per field. No special characters are 
required to begin or end a command character sequence. When a command is valid, the 
unit executes the command and sends a response to the host device. All responses from 
the unit to the host end with a carriage return and a line feed (CR/LF = 
]
), which signals the 
end of the response character string. A string is one or more characters.
Unit-initiated Messages
The inserter issues the following copyright message when it detects an IP connection. xx is 
MM (multimode) or SM (singlemode), Vn.nn is the firmware version number; 60-1273-zz is the 
part number of the connected unit.
(c) Copyright 20nn, Extron Electronics FOX RS 104 xx, Vn.nn,
60-1273-zz Day, Date, Time
]]
Error Responses
When the unit receives a valid SIS command, it executes the command and sends a 
response to the host device. If the unit is unable to execute the command because the 
command is invalid or it contains invalid parameters, the unit returns an error response to 
the host. The error response codes are:
E10 –  Invalid command 
E13 –  Invalid parameter 
E14 –  Invalid command for this configuration










