User Manual

Siemens Building Technologies VISONIK DCS Functions and System Messages VVS18 CM2U8567E / 04.1999
Landis & Staefa Division Function PRR 2-239
This system-internal tag ("Reason for Reaction") denotes that the "reason" for a process
or maintenance reaction has not been set although a reaction entry exists.
The VISONIK DCS manages this "REAR" tag in the reaction programs, ensuring
optimum and fast reaction access. If this tag is not present, no process reactions will be
executed as a result of this "reason".
Errors of this kind are corrected automatically when the register is printed or when the
function VE (verify data file) is executed.
Example for ?FL
PRR 12:03:38 Start of D A T A - L I S T 30.07.1996/Tu
T8
AI $d100'001 = RO'OM'TEMP"01 / 4
Positive Edge 1: Normal ---> >HIL=22.0
Blocking Flag $FL10
Off
?FL_____PRR Blocked!________($FL10.RFL=Off)
Reaction PACH___Change Point Parameter
Address DO $d100'041
Parameter DO__________Set Digital Output:
Priority=0
Value 0=Off
Reporting MSGDEV M1
?REAR