Datasheet

5
EA KIT129-6
DEFAULT SETTINGS
After power-on or a manual reset, the registers shown here are
set to a specific value.
Please note that all the settings can be overwritten by creating
a power-on macro (normal macro no. 0).
DIGITL INPUTS AND OUTPUTS
EA KIT129 provides 8 digital in- or outputs (5V
CMOS level, grounded). Definition for each line as an
In- or Output can be done at any time. Connection will
be done via J120 as a 2x5 double row pin header.
8 inputs
Factory-set all lines are set to input (internally pulled-up). However, the inputs will
be queried and evaluated directly via the serial interface ("ESC Y R"). Additionally
to that a voltage of >4V starts an internal port macro (if defined). When the 8 lines
are combined, up to 256 port macros can thus be addressed. Each of these port
macros can change the contents of the screen or switch an output, thus enabling
a wide range of control functions. To create the port macros you need a PC and
the EA DISK240
*)
floppy disk. You will find a more detailed description on page 6.
The automatic port query can be disabled by means of the "ESC Y A 0" command.
Note: The logic circuitry is designed for slow operations; in other words, more than
3 changes per second cannot be easily executed. If an input is left open, it is logical
high (internaly pulled-up via 100 kOhm).
8 outputs
Writing the command "ESC Y M anz" will redefine one or more line as an output. Upper lines will be
outputs and lower lines stay as inputs. Command "ESC Y M 2" for example
defines IO8 and IO7 as output lines and IO1~6 will stay as inputs.
Each (re-defined) line can be controlled individually using the "ESC Y W"
command. A maximum current of 10mA can be switched per line. Please
note that these 10mA are valid for L-level; H-level will drive some hundrets
of µA only. For more power use an external transistor or MOSFET.
In- and Output J120
Pin Symbol Function Pin Symbol Function
1 VDD +5V Supply 2 IO 1 Port 1
3 IO 2 Port 2 4 IO 3 Port 3
5 IO 4 Port 4 6 IO 5 Port 5
7 IO 6 Port 6 8 IO 7 Port 7
9 IO 8 Port 8 10 GND 0V, Ground
Default settings
Register Command
after
power-on / reset
Text mode ESC L set, black
Terminal font ESC FT Font 3, no zoom
Cursor ESC QC on
Flashing frequ. ESC QZ 0.6 sec.
Graphics
mode
ESC V set
Graphics font ESC F Font 3, no zoom
Last xy ESC W (0;0)
Bargraph 1/2 ESC B undefined / unchanged
Selekt/deselekt ESC K selected
I/O 1..8 ESC Y 8 inputs
ATTENTION
handling precautions!