```pascal
// Block Type: InstanceDB
// Block Number: 980

DATA_BLOCK "PID_RMM301_Data"
{ S7_Optimized_Access := 'TRUE' }
VERSION : 0.1

VAR
  PID_Water_Proportional : Real := 0.0;
  PID_Water_Integral : Real := 0.0;
  PID_Water_Derivative : Real := 0.0;
  Water_Valve_Out : Real := 0.0;
  mH20PIDEn : Bool := FALSE;
  PID : "PIDControl";
END_VAR

BEGIN
  // Data Blocks have no executable code
END_DATA_BLOCK

```