C Control The I Unit-M Advanced 5 Vdc Inputs / outputs 16 x digital I/Os / 8 x analogue or digital I/Os Program memory 2 198805 Datenbogen
Produktcode
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will result in global variables. More can be found in the chapter „Functions“.
Prior to use a variable has do be declared otherwise an error message will occur at compilation.
BYTE Variables
Byte (value 0 ... 255) is the smallest numeric data type, ocupies 1 Byte = 8 Bit
Prior to use a variable has do be declared otherwise an error message will occur at compilation.
BYTE Variables
Byte (value 0 ... 255) is the smallest numeric data type, ocupies 1 Byte = 8 Bit
define MyByte as byte
WORD Variables
Word (value -32768 ... 32767) this data type occupies 2 Byte = 16 Bit
define MyWord as word
FLOAT Variables
While the C-Control M 2.0 has just BYTE and WORD Types, even for non professionals easy to handle, the
M ADVANCED has a new Data Type Float. It consists on one byte exponent and 3 byte mantissa with sign.
Therefore a floating point value occupies 4 bytes (32 bit).
Please see the chapter FLOATING POINT MODULE for details.
While the C-Control M 2.0 has just BYTE and WORD Types, even for non professionals easy to handle, the
M ADVANCED has a new Data Type Float. It consists on one byte exponent and 3 byte mantissa with sign.
Therefore a floating point value occupies 4 bytes (32 bit).
Please see the chapter FLOATING POINT MODULE for details.
CONSTANTS
In programming, a constant is a value that never changes. The other type of values that programs use is
variables, symbols that can represent different values throughout the course of a program. A constant can be
- a number, like 25 or 3.6
- a character, like a or $
- a character string, like "this is a string"
Constants never change at runtime, they are constant.
Numeric constants are generally decimal system based but BASIC++ supports the binary,octal, hexadecimal
system also. See the next chapter for details.
variables, symbols that can represent different values throughout the course of a program. A constant can be
- a number, like 25 or 3.6
- a character, like a or $
- a character string, like "this is a string"
Constants never change at runtime, they are constant.
Numeric constants are generally decimal system based but BASIC++ supports the binary,octal, hexadecimal
system also. See the next chapter for details.
const MyConstant = 122
POINTER
There is one Interrupt Vector INTERRUPT available that serves for the immediate reaction either on an
external request (negative edge at IRQ) or an internal request (e.g Timer Interrupt). See Chapter CONFIG
REGISTER for further information. Any user interrupt is inhibited if no interrupt vector is defined.
external request (negative edge at IRQ) or an internal request (e.g Timer Interrupt). See Chapter CONFIG
REGISTER for further information. Any user interrupt is inhibited if no interrupt vector is defined.
INTERRUPT MyInterruptService
DATA TYPES
Except the Floating Point Module (contained only in the C-Control Unit ADVANCED) there are only 3 Data
Types used Bit, Byte and word.
A bit status is alwas defined by boolean ON (true=logic high) and OFF(false=logic low). A byte or word
content is always defined as a value which can be expressed in different number systems.The applied
system has to be identified if other than decimal system based constants are used:
Examples for different number systems
01011101b binary system
123o oktal system
1AFh hexadecimal system
1000 decimal system
Types used Bit, Byte and word.
A bit status is alwas defined by boolean ON (true=logic high) and OFF(false=logic low). A byte or word
content is always defined as a value which can be expressed in different number systems.The applied
system has to be identified if other than decimal system based constants are used:
Examples for different number systems
01011101b binary system
123o oktal system
1AFh hexadecimal system
1000 decimal system
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