The INGEAR Allen-Bradley supports the following data types
|
OPC Canonical Type |
Type |
Range |
|
VT_BOOL |
Boolean (bit value) |
True / False |
|
VT_BOOL | VT_ARRAY |
Array of Booleans |
|
|
VT_I1 |
Signed Byte (8 bit value) |
-128 to 127 |
|
VT_I1 | VT_ARRAY |
Array of Signed Bytes |
|
|
VT_UI1 |
Unsigned Byte (8 bit value) |
0-255 |
|
VT_UI1 | VT_ARRAY |
Array of Unsigned Bytes |
|
|
VT_I2 |
Signed Short (16 bit value) |
-32786 to 32767 |
|
VT_I2 | VT_ARRAY |
Array of Signed Shorts |
|
|
VT_UI2 |
Unsigned Short (16 bit value) |
0 – 65535 |
|
VT_UI2 | VT_ARRAY |
Array of Unsigned Shorts |
|
|
VT_I4 |
Signed Long (32 bit value) |
-2147483648 to 2147483647 |
|
VT_I4 | VT_ARRAY |
Array of Signed Longs |
|
|
VT_UI4 |
Unsigned Long (32 bit value) |
0 to 4294967295 |
|
VT_I4 | VT_ARRAY |
Array of Unsigned Longs |
|
|
VT_R4 |
Float (IEEE Single Precision Real) |
1.40239846E-45 to 3.40282347E+38 |
|
VT_R4 | VT_ARRAY |
Array of Floats |
|
|
VT_BSTR |
ASCII String |
|