DDE/SuiteLink to OPC Conversions
- Last UpdatedMar 21, 2017
- 1 minute read
In the case of the gateway receiving data from a DDE/SuiteLink source and sending it to an OPC client, the gateway converts DDE/SuiteLink types to OPC types as follows:
Note: Conversion failures can occur. In this case, the gateway returns Bad quality to the OPC client.
|
DDE/SuiteLink Type |
OPC Variant Canonical Mapping |
|
Discrete |
VT_BOOL |
|
Float |
VT_R4 |
|
Integer |
VT_I4 |
|
String |
VT_BSTR |