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Kepware Knowledge Base: Solution


OPC Quick Client Displays a Tag Defined as BCD as Word


Last Update: 11/7/2018

OPC does not recognize BCD as a data type because it is not a variant data type. As such, it converts the data type to an applicable supported type. The conversion occurs on data provided to the connected client when the data is written from that client through the server to the device.The data conversion is as follows:

  • BCD to/from Word (UINT16)
  • LBCD to/from DWord (UINT32)
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