aci eRCM Express, Руководство пользователя

Страница: 70 / 97

mCore Firmware Ver 01.10 Ver 2019-Oct-29 Page 70 of 97
// =======================================
// Compressor is warmed up, and we are ready to bring compressor online.
// First, load in the correct eRCM Viewer model, and then verify it.
// =======================================
// Load in the correct file
Modbus.NumberOfDataValues = eRCM_SetViewerFileLen
Modbus.Address = eRCM_SetViewerFileStart
Modbus.Data(1) =
2 // Load in the "2Two-stg Injection.rvf" file
Modbus.Write()
Sleep 500 ms
// Verify that this file is correct. If should be a 2-stage unit with 6 throws,
// 6 cylinders, and 23 load steps.
Modbus.NumberOfDataValues = eRCM_CommonFixedDataLen
Modbus.Address = eRCM_CommonFixedDataStart
Modbus.Read()
// All must be true, else wrong file!
// NumStgs=2 AND NumCyls=6 AND NumThrows=6 AND NumLSs=23
IF Modbus.Data(11)=2 AND Modbus.Data(9)=6 AND _
Modbus.Data(12)=6 AND Modbus.Data(10)=23 AND
Modbus.Data(26)=123321 THEN
‘ 123321 is User ID value for this model.
MESSAGE “Correct eRCM Viewer model loaded.”
ELSE
ALARM “Wrong eRCM Viewer model in eRCM Express. Stop unit!”
SHUTDOWN
END
END IF
// Check to see if we can force unit to start in the safest load step.
// This is only practical if access to the
unit’s final discharge pressure
// is known. Unit’s “actual” discharge pressure is likely about the same as
// suction pressure since we are in bypass mode.
IF (Field Discharge Pressure is Known) THEN
Modbus.NumberOfDataValues = eRCM_CommonWritesLen
Modbus.Address = eRCM_CommonWritesStart
Modbus.Data(1) =
UnitABC.CurrentLoadStep
Modbus.Data(2) = UnitABC.Stage1.Ps_PSIG
Modbus.Data(3) = UnitABC.Station.Pd_PSIG // This item is SPECIAL!
Modbus.Data(4) = UnitABC.Driver.CurrentRPM
Modbus.Data(5) = UnitABC.Stage1.Ts_F
Modbus.Data(6) = UnitABC.Stage2.Ts_F
Modbus.Data(7) = 0
Modbus.Data(8) = 0
Modbus.Data(9) = 0
Modbus.Data(10) = 0
Modbus.Write()
Modbus.NumberOfDataValues = eRCM_CheckSafeStartUpLen
Modbus.Address = eRCM_CheckSafeStartUp
Modbus.Data(1) =
1 // The “1” tells eRCM Express to return Safe Start Up LS
Modbus.Write()
Modbus.NumberOfDataValues = eRCM_ForceCalcsLen
Modbus.Address = eRCM_ForceCalcsStart
Modbus.Data(1) =
1 // Force a calculation of the compressor model