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Page 3
The CallShop Fone Display is controlled by a PC via serial communications. The PC’s COM
Port settings must be:
Baud Rate
2400
Data Bits
8
Stop Bits
1
Parity
None
Using this serial interface you can send message packets to the device to control its
behavior. Each message packet is ASCII data with a carriage return at the end of each
packet. This simple serial protocol allows for easy implementation and testing using
common tools.
Document Conventions:
In this document the following names and symbols will have the following meanings:
<CR>
Carriage Return
the hex value 0x0d (‘\r’)
0x
Hex Character Representation. The 2 digits after the 0x are a hex value.
ETX
The ASCII character ETX which is 0x03 or ‘\3’
Control Commands :
The following list of commands allows a PC program to control the operation of the
CallShop Fone Display
as part of an overall call shop solution.
Each command is a single ASCII character followed by 1 or more parameters as text, ending
with a
<CR>
Each command will cause the device to perform some function and respond
with a confirmation message which is the command character proceeded by the “^” and
ending with a
<CR>
Blank LCD Line X:
The “l” (lower case ‘L’) command will cause a line of the LCD display to be cleared or
blanked. This command is a 3 character command with the 2
nd
character being the line
number, 1 for top, and 2 for bottom.
Format:
lR
<CR>
l
= “l” (Lower case “L”
R
= Row (1 for line 1 and 2 for line 2)
Response:
^l
<CR>
The CallShop Fone Display will respond with this confirmation message
Example:
l2
<CT>
Clear line 2 of the LCD display
