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Please note that a filtered PWM output is not exactly at zero volts if the D/A converter output is set to
zero. The reason is that the port output lo voltage is approx. 50mV and a 2us pulse is remaining at the
D/A output even the converter is programmed to a zero output. In this case the filter output will be
around 70mV for a D/A converter output programmed to zero.
The D/A-ports can be programmed for an alternate servo drive function. Details regarding this feature
you will find in the BASIC++ manual
Operating Voltage
The C-Control Computer contain an integrated LVI (Low Voltage Inhibit) circuit. It prevents CPU male
functions in case of low voltage conditions. Otherwise the Flash memory ( containing operating system
and user program) may unintentionally be erased. An under voltage condition will cause the CPU to
enter the RESET state. If you are facing permanent unexpected reset conditions in your application,
the usual reason is a short break down of your operating voltage.
This unexpected reset conditions will lead to a loss of your program stored in the Flash, if the
computer receives data from the serial interface at the same time. (RESET=DOWNLOAD MODE).
This problem will not appear if the unit is in the Autostart Mode with the corresponding jumper
attached. The minimum operating voltage is 4.8V
The following chapter explains how the operating voltage is applied, depending on the hardware
environment.
Starting
The C-Control Computers require a Development Environment running on a PC. It features the
program downloader. The compiled BASIC program is transmitted to the C-Control Computer via the
RS 232 serial interface. To match the different voltage levels of the C-Control Unit and the RS232
interface, a special converter is required. Your C-Control Application-Board contains this converter
already.
Operating the C-Control M 1.2 and 2.0 together with the Applicationboard
Other than for the M 2.0 the Application Board is (without the das Unit Adapter module 198875) only
suitable for programming the M 1.2. The M 2.0 is plugged to the connectors at the center of the board,
the M 1.2 to the connector at the right side of the Application board. For Details please see the manual
for the Application Board.
The Application Board contains a 5V regulator and the RS 232 interface circuit. The input voltage to
the regulator at te board is 9...15V applied via a terminal or a DC jack
Terminal 9 to 15V DC
Connect the operating voltage to this terminal and carefully check for correct polarity. Advice regarding
polarity you find printed at the board or in the manual for the Application Board.
DC Jack 9 to 15V DC
This jack is suitable to connect a standard power suply. Ground is located at the plug coat, +5 is
located at the plug's center. Please check for proper polarity before connecting the power supply to
the board.
Operating the C-Control M1.2 / 2.0 in User Applications
Both units can even be programmed when plugged into your application (in circuit programming). In
this case your application has to provide a regulated 5V operating voltage and a serial interface circuit
connected to the PC. The Unit M 2.0 may be alternatively connected to 8...12V DC when using the
unit's on board voltage regulator.
If your Application does not support this requirements you can use the C-Control RS232 /USB Interfce
Adapter (198834 or 198318) for incircuit programming. Please see the corresponding section below in
this document.
Operating the C-Control M 1.2 u. 2.0 together with the Interface Adapter
The RS232 / USB Interface Adapter (198834 or 198318) contains a 5V regulator, providing the
operation voltage for the unit.It also provides the circuit to a RS232/USB connection. The C-Control
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