ABB 07CR41 Operating Manual page 80

3
Performing a warm start
Power OFF/ON or
Command WARM <CR> in terminal mode (see documentation for the 907 PC 331
programming software) or
Menu item "Enable PCL mode" in the programming system
•
Operating mode: master basic unit, slave basic unit or stand-alone-basic unit
Important:
The 40 series basic units can only be operated in stand-alone mode. They have no access to
the CS31 system bus.
Absolute identifier:
Symbolic identifier:
Meaning of the values of the constants:
Master basic unit at the CS31 system bus:-1 (FFFF
-
Stand-alone basic unit:
-
Slave basic unit at the CS31 system bus:
-
AC31 module addresses:
Range of values:
Default value:
Important!
Changing the basic unit operating mode involves three steps:
1. Change system constant KW 00,00 in the basic unit
2. Save the PLC program in the EEPROM
3. Activate the new operating mode of the basic unit using the following steps:
Call the menu item "Enable PLC mode" in the ABB programming and test system or
-
Perform a warm start or
-
Perform a cold start.
-
•
Backup of data areas
Back-up of data, i.e. saving data during power OFF/ON, is only possible in the 50 series basic
units. At an ambient temperature of 25 °C data can be stored for 40 days, when the power
supply is switched on, the accumulator recharges completely within 12 hours. The following
data can be backed up, completely or partially:
Digital flags
Word flags
Double word flags
Step chains
Historical values
If certain data have to be backed up, they will be excluded from initialization to 0.
•
Initialization of data areas
Initialization to 0 takes place on program start-up , with the (sub) areas to be initialized being
defined by system constants. Initialization functions as shown in the following table.
An external battery is not required.
Programming 5 – 8
KW 00,00
MAST_SLV
)
H
-2 (FFFE )
H
0...61, 100
-2, -1, 0...61,100
-2 (stand-alone)
Advant Controller AC 31 / Issued: 01.99