diff --git a/plc4go/internal/s7/Reader.go b/plc4go/internal/s7/Reader.go
index 895f9800686..b9fb7545ae3 100644
--- a/plc4go/internal/s7/Reader.go
+++ b/plc4go/internal/s7/Reader.go
@@ -240,7 +240,7 @@ func (m *Reader) ToPlc4xReadResponse(response readWriteModel.S7Message, readRequ
 		responseCodes[tagName] = responseCode
 		if responseCode == apiModel.PlcResponseCode_OK {
 			ctxForModel := options.GetLoggerContextForModel(context.TODO(), m.log, options.WithPassLoggerToModel(m.passLogToModel))
-			plcValue, err := readWriteModel.DataItemParse(ctxForModel, payloadItem.GetData(), tag.GetDataType().DataProtocolId(), int32(tag.GetNumElements()))
+			plcValue, err := parsePlcValue(ctxForModel, tag, payloadItem.GetData())
 			if err != nil {
 				return nil, errors.Wrap(err, "Error parsing data item")
 			}
@@ -295,6 +295,11 @@ func encodeS7Address(tag apiModel.PlcTag) (readWriteModel.S7Address, error) {
 	), nil
 }
 
+func parsePlcValue(ctx context.Context, tag PlcTag, data []byte) (apiValues.PlcValue, error) {
+	// TODO: port over
+	panic("not implemented yet")
+}
+
 // Helper to convert the return codes returned from the S7 into one of our standard
 func decodeResponseCode(dataTransportErrorCode readWriteModel.DataTransportErrorCode) apiModel.PlcResponseCode {
 	switch dataTransportErrorCode {
diff --git a/plc4go/internal/s7/Writer.go b/plc4go/internal/s7/Writer.go
index ec718693378..57f7e2acc10 100644
--- a/plc4go/internal/s7/Writer.go
+++ b/plc4go/internal/s7/Writer.go
@@ -236,7 +236,7 @@ func serializePlcValue(tag apiModel.PlcTag, plcValue apiValues.PlcValue) (readWr
 	if s7StringTag, ok := tag.(*PlcStringTag); ok {
 		stringLength = s7StringTag.stringLength
 	}
-	data, err := readWriteModel.DataItemSerialize(plcValue, s7Tag.GetDataType().DataProtocolId(), int32(stringLength))
+	data, err := readWriteModel.DataItemSerialize(plcValue, s7Tag.GetDataType().DataProtocolId(), 0 /*TODO: port s7DriverContext.getControllerType()*/, int32(stringLength))
 	if err != nil {
 		return nil, errors.Wrapf(err, "Error serializing tag item of type: '%v'", s7Tag.GetDataType())
 	}