Configuration; System Constants - ABB 07CR41 Operating Manual

5.4 Configuration

5.4.1 System constants

5.4.1.1
5.4.1.2
Advant Controller AC 31 / Issued: 01.99
Before sending the program to the PLC you should make sure that the basic unit has been
configured correctly for the application. There are three configuration tools:
The PLC system constants for configuration of the basic unit's operating parameters;
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The CS31CO function block for configuring certain remote units via programming
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The MAIL command (in the "Terminal Mode") can be used to configure the remote
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modules with the programming device.
System constants/diagnosis flags/AC31 status (overview)
Setting the operating modes
The constants KW 00,00...KW 00,15 are reserved as system constants. Even the constants
KW 00,12...KW 00,15 which are not yet used may under no circumstances be used for other
purposes.
KW 00,00 : Setting operating modes of the basic unit
(Stand-alone basic unit, master basic unit, slave basic unit)
KW 00,01 : Initialization: bit flag area
KW 00,02 : Initialization: word flag area
KW 00,03 : Initialization: double word flag area
KW 00,04 : Initialization: step chain flag area
KW 00,05 : Initialization: historical values
KW 00,06 : Application mode of the serial interface COM 1
KW 00,07 : PLC reaction to class 3 errors
KW 00,08 : Not used
KW 00,09 : Initialization of the CS31 system after power ON, warm start or cold start
KW 00,10 : Size of the transmitting area of the slave basic unit
KW 00,11 : Size of the receiving area of the slave basic unit
System constants/setting the operating modes
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Definition of terms
Cold start
All the RAM memories are tested and cleared.
If there is no user program in the EEPROM, the default values are set to all of the system
constants (identical to the factory settings).
The operating modes given by the system constants are set.
The CS31 system bus is initialized again (only when used as a master on the CS31 system
bus).
Performing a cold start
Command KALT <CR> in terminal mode (see documentation for the 907 PC 331
programming software) or
Menu item "Cold start" in the programming system
Warm start
All the RAM memories (excepted the program memory and operands memory (flags)) are
tested and deleted.
If there is a user program in the EEPROM, this program is loaded into the RAM including
the system constants.
The operating modes given by the system constants are set.
The CS31 system bus is initialized again (only when used as a master on the CS31 system
bus).
5 – 7 Programming
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