VI_ATTR_IO_PROT
Resource Classes
GPIB INTFC, GPIB INSTR, GPIB-VXI INSTR, Serial INSTR, TCPIP SOCKET, USB INSTR, USB RAW, VXI INSTR, VXI SERVANT
Attribute Information
| Access Privilege | Data Type | Range | Default |
|---|---|---|---|
|
Read/Write |
ViUInt16 |
GPIB: |
VI_PROT_NORMAL |
|
|
|
VXI |
VI_PROT_NORMAL |
|
|
|
GPIB-VXI: |
VI_PROT_NORMAL |
|
|
|
Serial, TCPIP, USB RAW: |
VI_PROT_NORMAL |
|
|
|
USB INSTR: |
VI_PROT_NORMAL |
Description
VI_ATTR_IO_PROT specifies which protocol to use. In VXI, you can choose normal word serial or fast data channel (FDC). In GPIB, you can choose normal or high-speed (HS-488) transfers. In serial, TCPIP, or USB RAW, you can choose normal transfers or 488.2-defined strings. In USB INSTR, you can choose normal or vendor-specific transfers.
In previous versions of VISA, VI_PROT_NORMAL was known as VI_NORMAL, VI_PROT_FDC was known as VI_FDC, VI_PROT_HS488 was known as VI_HS488, and VI_PROT_4882_STRS was known as VI_ASRL488.
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