Function Packages
SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual
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69
DC8-037-2.02, Edition 10.2017
The activation of the element or function to be controlled is the task of the
open-/closed-loop
control function
.
For the proper operation of this function, information is required by the
open-/closed-loop control
function
(e.g. from an interlocking logic) for the choice of a posi-tive or negative confirmation.
The treatment for commands can be activated individually for each command via a parameter.
The treatment for pulse command comprises the following processing functions:
•
Prepare command output procedure
─
Formal check
─
Retry suppression
─
1 out of n check
─
Direct command or
─
Select and execute command
─
Control location check
─
Command locking
•
Initiate command output procedure
─
Command to application program
•
Monitor pulse duration (only pulse commands)
─
Command output time
─
Return information monitoring
•
Terminate command output procedure
3.3.1.2 Change Monitoring and Generation of Messages with Time Tag
For the generation of
messages with process information
, the signals in the output process imag-
es that are assigned to an element of a spontaneous information object, are monitored for
change.
The change monitoring takes place in the grid of the cycle time of the
open-/closed-loop control
function
, in which the signal is assigned to a spontaneous information object.
On a change of the state in a corresponding element of the spontaneous information object,
the generation of the message is initiated.
If a spontaneous information object has been activated for transmission due to a change, a
message with process information is generated. The time tag corresponds either cycle-
synchronous with the current time (resolution corresponds with the cycle time) or the time in-
formation from an assigned spontaneous information object.
Summary of Contents for CP-8000
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