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Fixed inverter not showing negative dc current

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This commit is contained in:
Matthias Heisig
2025-09-24 10:22:40 +02:00
parent dd82744356
commit 9cf02c1847
3 changed files with 219 additions and 199 deletions
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388
PLC/PLC.tmc
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File diff suppressed because one or more lines are too long

28
PLC/POUs/Sunspec/Kaco/FB_PowerSupplyKaco.TcPOU
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@@ -191,6 +191,9 @@ VAR
// Inverter name for alarm message
_sName : STRING;
// Buffer for word switching in reading current dc values
_wBuffer : WORD;
END_VAR
VAR CONSTANT
// Battery limits registers (Model 64202)
@@ -214,7 +217,7 @@ VAR CONSTANT
// Start of register with the current dc values
// Size 4
DC_VALUES_START_REGISTER : WORD := 40097;
DC_VALUES_START_REGISTER : WORD := 40156;
// Start of register with the current ac values
// SIZE 10
@@ -651,11 +654,28 @@ CASE _iStateCyclicData OF
IF (NOT _fbReadDCValues.bBusy) THEN
_fbReadDCValues(bExecute := FALSE);
_iStateCyclicData := 51;
// Switch words
// DC current
_wBuffer := _awCurrentDCValues[0];
_awCurrentDCValues[0] := _awCurrentDCValues[1];
_awCurrentDCValues[1] := _wBuffer;
// DC voltage
_wBuffer := _awCurrentDCValues[2];
_awCurrentDCValues[2] := _awCurrentDCValues[3];
_awCurrentDCValues[3] := _wBuffer;
_wBuffer := _awCurrentDCValues[4];
// DC power
_awCurrentDCValues[4] := _awCurrentDCValues[5];
_awCurrentDCValues[5] := _wBuffer;
// If there was no error and the converter has no error continue
IF (NOT _fbReadDCValues.bError) THEN
stCurrentValues.rActDCCurrent := LREAL_TO_REAL(WORD_TO_INT(_awCurrentDCValues[0]) * EXPT(10,WORD_TO_INT(_awCurrentDCValues[1])));
stCurrentValues.rActDCVoltage := LREAL_TO_REAL(WORD_TO_UINT(_awCurrentDCValues[2]) * EXPT(10,WORD_TO_INT(_awCurrentDCValues[3])));
stCurrentValues.rActDCPower := LREAL_TO_REAL(WORD_TO_INT(_awCurrentDCValues[4]) * EXPT(10,WORD_TO_INT(_awCurrentDCValues[5])));
MEMCPY(ADR(stCurrentValues.rActDCCurrent), ADR(_awCurrentDCValues[0]), 4);
MEMCPY(ADR(stCurrentValues.rActDCVoltage), ADR(_awCurrentDCValues[2]), 4);
MEMCPY(ADR(stCurrentValues.rActDCPower), ADR(_awCurrentDCValues[4]), 4);
ELSE
// Dont throw comm error here because this is just
// informational data and not process critical