ABB CMA131 3DDE300411 Generator Control and Manager
PRIM/SEC For redundant FieldControllers a redundancy toggle is initiated (toggle be tween Primary and Secondary CPU). A toggle is possible only in SYNC
status.
BOOTSTRAP The FieldController is loaded with the operating system and is initialized. In
the case of redundancy only the Primary is loaded with the operating system.
In a FieldController there is no automatic adjustment of the operating
system after the process station has been loaded! When using the
FieldController a corresponding operating system version must al ready be loaded on this FieldController.
INITIALIZE ALL The FieldController is deleted. General reset means that the user program
is deleted. The operating system is not executed. In the case of redundancy
both FieldControllers are reset. The Primary CPU becomes active first and
can then be bootstrapped again. After INITIALIZE ALL the redundancy is no
longer active. The operating system in the Secondary is restarted after the
user program has been loaded.
INITIALIZE In the initialization, the FieldController performs a cold start. Any user pro gram already present is also
deleted. The redundancy is now no longer ac tive. The Secondary enters the “No BS” state. A cold start task -is per formed once. The task is performed during transition from cold start or cold
start stopped to running state. In a cold start all the variables and working
data of the function blocks are initialized. The initial values of the variables
can be preset individually in the Variables List for each variable. Outputs
from I/O modules are set to the safety values. After the cold start task has
been computed the outputs are rewritten in accordance with the programs.
COLD START Both FieldControllers perform a cold start.
WARM START Both FieldControllers perform a warm start. The formerly active FieldCon troller reverts to Primary. A warm start task is performed once. The warm
start task is performed while the resource is in transition from the warm start
state or warm start stopped to the running state. It is computed before the
cyclic user tasks are started. After a power failure the process station al ways performs a warm start when the power returns.
The number of warm starts is counted in a system variable
(xxxx.NoPowerFail), which is reset to zero in the event of a cold start.
The time of the last power fail signal can be read in a further system
variable (xxxx.PowerOffTim).
RUN/STOP Both FieldControllers perform the command (Run or Stop). The LED display
at the Primary indicates the current status. In a redundancy toggle, the last
status is retained, irrespective of the RUN/STOP switch position.

If configured for autostart, the task starts automatically when the resource is started. All
lower-level program lists and programs start along with the task as long as the program list
parameter has been set ON.
Task states are explained on page 38. For further information on tasks see Engineering Manual,
System Configuration, Project Tree.
START The selected task is started. It is processed either in the cycle or as soon as
possible (SPS mode), depending on configuration.
EXECUTE ONCE The selected task is executed precisely once. Task subsequently reverts to
the stopped state.
STOP The selected task is stopped.
Task can also be stopped by using the RUN/STOP switch on the FieldCon troller.
RESET Current task reverts to the configured state.
CLOSE Exits the dialog box and returns to project tree.
SHOW... Selected task’s process image is displayed. Process image size can be
configured. Process image is displayed automatically when the operating
system is loaded.