Specifications

9261-7974 Issue 06
ESFIRECODER - Emergency Services Firecoder
Page 12
www.multitone.com
5.1.1 Operating Mode
The UFI provides an interface to a 2 line, 24 character LCD display, up to 5 buttons, 3 input
channels and up to 6 LED's. A watchdog is also provided for the PC - once enabled, if the
watchdog is not updated every few seconds, the PC will automatically be rebooted.
5.1.2 UPIP Protocol
Each UPIP command sent to or from the UFI consists of a standard ASCII text line followed by
a CR (0D hex). A command will normally produce one or more lines of response, generally
starting with a lower case letter.
The first letter of the line determines the command type.
Command Response Notes
Sh{h} ohhhh Set one or more outputs
Rh{h} ohhhh Reset one or more outputs
Ohhhh ohhhh Set ALL outputs
Ttext ohhhh Send text to display
Bhh bhh Backlight control
Utttttttt u User defined display character
Wh w Watchdog control
A error Prevent modem detection
E en Echo command input
M mF Return operating mode
Q o00hh Query Status
I i00hh Read Buttons/Inputs
V vversion Get software version
Ntext ntext Save/Read Non-Volatile text
Gtext ghhhhhhhh Generate Key
L l status Loop back test
Where:
hhhh is a 16 bit hex word, expressed as four hex characters
hh is a 8 bit hex byte expressed as two hex characters