`RequestUnion` (UNION)

TYPE RequestUnion : UNION

InOut:

Name	Type
`read`	RequestDataRead
`writeSingle`	RequestDataWriteSingle
`diagnostics`	RequestDataDiagnostics
`writeMultiple`	RequestDataWriteMultiple
`maskWriteRegister`	RequestDataMaskWriteRegister
`readWriteMultipleRegisters`	RequestDataReadWriteMultipleRegisters

RequestUnion (UNION)