Totalizer Function Block - ABB PROFIBUS FEX100-DP User Manual

WaterMaster
Electromagnetic flowmeter
PV (Primary
Value) from
Transducer Block
PV_SCALE
LIN_TYPE
OUT_SCALE
PV_FTIME
HI, HI_HI_LIM
LO, LO_LO_LIM
Fig. A.3 AI Block Algorithm
A.2 Totalizer Function Block
Fig. A.4 TOT Block Summary
60
FB-Algorithm
Field_Val = (PV – EU 0%) / (EU 100% – EU 0%)
PV_SCALE PV_SCALE PV_SCALE
Field_Val
TV = Field_Val * (EU 100% – EU 0%) + EU 0%
OUT_SCALE
TOTAL
CHANNEL
UNIT_TOT
Totalizer
Function Block
SET_TOT
PRESET_TOT
MODE_TOT
FAIL_TOT
ALARM_HYS
HI_HI_ALM
Appendix A – PROFIBUS-PA Block Structure Diagrams
Linearization
OUT_SCALE OUT_SCALE
Filter
Limit Check
Process Parameters
.....
Alarm Parameters
Field_Val
TV
OUT
IM/WMPBST–EN Rev. B