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The DMX C4 has been designed to be used from within a Windows 3.1 DOS
window or with Windows 95 HyperTerminal. The required port settings are
9600 Baud, 8 Data bits, No parity bit, 1 Start bit, 1 Stop bit, ANSI emulation and
Hardware flow control. Before attempting to communicate with the DMX C4,
connect it to the dot matrix display and to the PC. Then power up the DMX C4
from 5Vdc. This will cause the cursor on the dot matrix display to blink.
Using the DMX C4 within a Windows 3.1 DOS window
Due to limitations with Windows 3.1 Terminal, it is necessary to place a 3/10 second delay between each character in the
Transfer Text settings. When a lot of text is transferred in this way, very long data transfer times ensue. It is quicker to use a DOS
window and type
mode comX: 9600,n,8,1
the file (e.g.
messages.txt
) using the MSDOS
Do not use the DMX C4 with a DOS window running under Windows 95.
Using the DMX C4 with Windows 95 HyperTerminal
HyperTerminal is a program that is normally included with your Windows 95 installation. It is called
resides in the directory
C:\Program Files\Accessories\HyperTerminal.
• Running Hypertrm.exe will cause a new communications connection to be constructed.
• Select a suitable program icon and enter a name for the new connection, e.g. DMX C4.
• In the Connect using box of the Phone number dialogue box, select the free COM port to which the DMX C4 is connected,
e.g. direct to COM 2.
• In COM x properties, select 9600 Bits per second, 8 Data bits, No parity, 1 Stop bit and Hardware flow control.
• Click OK to enable these settings and your system is ready for use.
HyperTerminal will have created a program icon for your connection and called it DMX C4.ht. Copy this icon to the desktop for
future use. Double clicking on it will run your DMX C4 connection with parameters as set up above.
The DMX C4 is a small and easy to use message store and display controller for LCD dot matrix
displays. Messages are programmed into the DMX C4's non-volatile memory by connecting it
directly to a suitable PC serial port and downloading text straight from Windows 95's Hyper
Terminal software.
Once programmed with messages, the DMX C4 and its LCD dot matrix display can be
disconnected from the PC and mounted in the target application. Messages can be recalled on the
dot matrix display via the DMX C4's serial port, parallel port or via contact closures.
• Messages stored in non-volatile EEPROM
• Fitted with contrast control for display
• Display Hold function freezes last message
• Drives most text displays up to 80 characters
• Stores up to 100 character messages
where X is the number of the COM port that is connected to the DMX C4. Then copy
Copy
command to the COM port (e.g.
D0......D7.
8
RESET
ENABLE
+5V 0V
copy messages.txt COMx:
CHARACTER
TEMPERATURE HIGH
DISPLAY
LASCAR
DMX C4
LED BACKLIGHTING
ON/OFF
PC. COM PORT
2
PC
CHARACTER
DISPLAY
DMX C4
TEMPERATURE HIGH
DMX CABLE-SER
).
Hypertrm.exe
and usually
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