"DREAM_NC_GCC_01.IG.rPRESS < 1.0E-5 AND
DREAM_DP1_GHC_01.IG.xPRESS_OK AND DREAM_DP1_GHC_01.IG.rPRESS < 1.0E-5;" If the at_vac setpoint will likely change during operation, we should make it user-configurable.

The logic should be: VRC_02 can be closed only when VRC_01 is open. so we only need to do is: set the VRC_02_ILK := VRC_01.i_xOpnLS, and pass it to the VRC_02 function.

//Close DP1_VRC_02 if DP1_VRC_01 is opened
"IF DREAM_DP1_VRC_01.iq_stValve.i_xOpnLS THEN
DREAM_DP1_VRC_02.M_Set_CLS_SW(TRUE);
END_IF
DREAM_DP1_VRC_02(i_xExtILK_OK := bDP1_VRC_02_ILK, i_xOverrideMode := bSystemOverrideMode); //Normally open valve"

Using pumpRUNNING estate instead of atSpeed. Since eState is evaluated more strictly: iq_stPtm.i_xAtSpd AND iq_stPtm.q_RunDO THEN iq_stPtm.eState := pumpRUNNING;

"DREAM_MC_GHC.IG_CH1.rPRESS < 1.0E-8 AND
DREAM_CAT1_PTM_01.iq_stPtm.i_xAtSpd AND
DREAM_CAT2_PTM_01.iq_stPtm.i_xAtSpd;"

Add interlock to the turbopumps estate: pumps are not running.
DREAM_ROUGH1_VFV_02(i_xExtIlkOK := DREAM_ROUGH1_VRC_01.iq_stValve.i_xClsLS AND DREAM_DP1_VRC_01.iq_stValve.i_xClsLS);

DREAM_ROUGH2_VFV_02(i_xExtIlkOK := DREAM_ROUGH2_VRC_01.iq_stValve.i_xClsLS);
DREAM_ROUGH2_VFV_03(i_xExtIlkOK := DREAM_ROUGH2_VRC_02.iq_stValve.i_xClsLS AND DREAM_CAT1_VRC_01.iq_stValve.i_xClsLS);