User Manual

Siemens Building Technologies VISONIK DCS Functions and System Messages VVS18 CM2U8567E / 04.1999
Landis & Staefa Division Function PRR 2-231
2.26 PRR Process Reaction Register
2.26.1 Initial Access and Handling
CTRL/P PRR
A general introduction to the subject of VISONIK reactions can be found under
"Reactions in General" in section R of this manual.
The process reaction PRR is one of six reaction types provided by the VISONIK DCS.
The reaction types are named after the "reason" that is to activate the reaction in each
case.
Each reaction entry consists of the following three parts:
–
"Reason" that activates the reaction
–
Blocking flag that can disable a reaction
–
Reaction to be executed
The process reaction function can execute a reaction based on the change of state of a
VISONIK data point.
•
Changes of the main value
•
Value goes out of limits
•
Changes of alarm status
•
Changes of operating state
•
Change a point parameter
•
Print a clear text message
•
Execute macro commands
•
Print slave messages
•
Start or stop COLBAS tasks
•
Automatic picture selection in VISONIK Insight
When the process reaction function is selected, the VISONIK DCS offers the user the
following possibilities:
T8 16:24:28 Function=PNT : PRR
Operation =CH : ?
0 CH = Change Data Entry
1 LI = List Data Registers
2 DEL = Delete Register Entry(ies)
3 LSTA = List Reaction Register State
4 LOCT = List Reaction Entries in Octal
Operation =CH :
Function call-up
General
What can the PRR do?
PRR reasons
PRR reactions
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