(open) attr
+-----------------------------+------------+----------------------------+----------------------+
| VISA name | Constant | Python name | val |
+-----------------------------+------------+----------------------------+----------------------+
| VI_ATTR_ASRL_ALLOW_TRANSMIT | 1073676734 | allow_transmit | 1 |
| VI_ATTR_ASRL_AVAIL_NUM | 1073676460 | bytes_in_buffer | 0 |
| VI_ATTR_ASRL_BAUD | 1073676321 | baud_rate | 9600 |
| VI_ATTR_ASRL_BREAK_LEN | 1073676733 | break_length | 250 |
| VI_ATTR_ASRL_BREAK_STATE | 1073676732 | break_state | 0 |
| VI_ATTR_ASRL_CONNECTED | 1073676731 | | VI_ERROR_NSUP_ATTR |
| VI_ATTR_ASRL_CTS_STATE | 1073676462 | | 1 |
| VI_ATTR_ASRL_DATA_BITS | 1073676322 | data_bits | 8 |
| VI_ATTR_ASRL_DCD_STATE | 1073676463 | | 1 |
| VI_ATTR_ASRL_DISCARD_NULL | 1073676464 | discard_null | 0 |
| VI_ATTR_ASRL_DSR_STATE | 1073676465 | | 1 |
| VI_ATTR_ASRL_DTR_STATE | 1073676466 | | 1 |
| VI_ATTR_ASRL_END_IN | 1073676467 | end_input | 2 |
| VI_ATTR_ASRL_END_OUT | 1073676468 | | 0 |
| VI_ATTR_ASRL_FLOW_CNTRL | 1073676325 | flow_control | 0 |
| VI_ATTR_ASRL_PARITY | 1073676323 | parity | 0 |
| VI_ATTR_ASRL_REPLACE_CHAR | 1073676478 | replace_char | 0 |
| VI_ATTR_ASRL_RI_STATE | 1073676479 | | 0 |
| VI_ATTR_ASRL_RTS_STATE | 1073676480 | | 1 |
| VI_ATTR_ASRL_STOP_BITS | 1073676324 | stop_bits | 10 |
| VI_ATTR_ASRL_WIRE_MODE | 1073676735 | | 128 |
| VI_ATTR_ASRL_XOFF_CHAR | 1073676482 | xoff_char | 19 |
| VI_ATTR_ASRL_XON_CHAR | 1073676481 | xon_char | 17 |
| VI_ATTR_DMA_ALLOW_EN | 1073676318 | allow_dma | 0 |
| VI_ATTR_FILE_APPEND_EN | 1073676690 | | 0 |
| VI_ATTR_INTF_INST_NAME | 3221160169 | | 'ascii' co... |
| VI_ATTR_INTF_INST_NAME | 3221160169 | | 'ascii' co... |
| VI_ATTR_INTF_INST_NAME | 3221160169 | | 'ascii' co... |
| VI_ATTR_INTF_NUM | 1073676662 | interface_number | 1 |
| VI_ATTR_INTF_NUM | 1073676662 | interface_number | 1 |
| VI_ATTR_INTF_NUM | 1073676662 | interface_number | 1 |
| VI_ATTR_INTF_TYPE | 1073676657 | | 4 |
| VI_ATTR_INTF_TYPE | 1073676657 | | 4 |
| VI_ATTR_INTF_TYPE | 1073676657 | | 4 |
| VI_ATTR_IO_PROT | 1073676316 | io_protocol | 1 |
| VI_ATTR_MAX_QUEUE_LENGTH | 1073676293 | | 50 |
| VI_ATTR_MAX_QUEUE_LENGTH | 1073676293 | | 50 |
| VI_ATTR_MAX_QUEUE_LENGTH | 1073676293 | | 50 |
| VI_ATTR_RD_BUF_OPER_MODE | 1073676330 | | 3 |
| VI_ATTR_RD_BUF_SIZE | 1073676331 | | 4096 |
| VI_ATTR_RM_SESSION | 1073676484 | | 4097 |
| VI_ATTR_RM_SESSION | 1073676484 | | 4097 |
| VI_ATTR_RM_SESSION | 1073676484 | | 4097 |
| VI_ATTR_RSRC_CLASS | 3221159937 | resource_class | INSTR |
| VI_ATTR_RSRC_CLASS | 3221159937 | resource_class | INSTR |
| VI_ATTR_RSRC_CLASS | 3221159937 | resource_class | INSTR |
| VI_ATTR_RSRC_IMPL_VERSION | 1073676291 | implementation_version | 18875648 |
| VI_ATTR_RSRC_IMPL_VERSION | 1073676291 | implementation_version | 18875648 |
| VI_ATTR_RSRC_IMPL_VERSION | 1073676291 | implementation_version | 18875648 |
| VI_ATTR_RSRC_LOCK_STATE | 1073676292 | lock_state | 0 |
| VI_ATTR_RSRC_LOCK_STATE | 1073676292 | lock_state | 0 |
| VI_ATTR_RSRC_LOCK_STATE | 1073676292 | lock_state | 0 |
| VI_ATTR_RSRC_MANF_ID | 1073676661 | | 4086 |
| VI_ATTR_RSRC_MANF_ID | 1073676661 | | 4086 |
| VI_ATTR_RSRC_MANF_ID | 1073676661 | | 4086 |
| VI_ATTR_RSRC_MANF_NAME | 3221160308 | resource_manufacturer_name | National Instruments |
| VI_ATTR_RSRC_MANF_NAME | 3221160308 | resource_manufacturer_name | National Instruments |
| VI_ATTR_RSRC_MANF_NAME | 3221160308 | resource_manufacturer_name | National Instruments |
| VI_ATTR_RSRC_NAME | 3221159938 | resource_name | ASRL1::INSTR |
| VI_ATTR_RSRC_NAME | 3221159938 | resource_name | ASRL1::INSTR |
| VI_ATTR_RSRC_NAME | 3221159938 | resource_name | ASRL1::INSTR |
| VI_ATTR_RSRC_SPEC_VERSION | 1073676656 | spec_version | 5244928 |
| VI_ATTR_RSRC_SPEC_VERSION | 1073676656 | spec_version | 5244928 |
| VI_ATTR_RSRC_SPEC_VERSION | 1073676656 | spec_version | 5244928 |
| VI_ATTR_SEND_END_EN | 1073676310 | send_end | 1 |
| VI_ATTR_SUPPRESS_END_EN | 1073676342 | | 0 |
| VI_ATTR_TERMCHAR | 1073676312 | | 10 |
| VI_ATTR_TERMCHAR_EN | 1073676344 | | 0 |
| VI_ATTR_TMO_VALUE | 1073676314 | | 2000 |
| VI_ATTR_TMO_VALUE | 1073676314 | | 2000 |
| VI_ATTR_TMO_VALUE | 1073676314 | | 2000 |
| VI_ATTR_TRIG_ID | 1073676663 | | -1 |
| VI_ATTR_WR_BUF_OPER_MODE | 1073676333 | | 2 |
| VI_ATTR_WR_BUF_SIZE | 1073676334 | | 4096 |
+-----------------------------+------------+----------------------------+----------------------+
|