Member of the Serial Instr class.
This property represents the current wire/transceiver mode. For RS-485 hardware, this property is valid only with the RS-485 serial driver developed by National Instruments. For RS-232 hardware, the values RS232/DCE and RS232/AUTO are valid only with RS-232 serial drivers developed by National Instruments and documented to support this feature with the corresponding National Instruments hardware. When this feature is not supported, RS232/DTE is the only valid value.
Valid values include the following:
| -1 | Unknown |
| 0 | RS485/Wire4 |
| 1 | RS485/Wire2-EchoDTR |
| 2 | RS485/Wire2-CtrlDTR |
| 3 | RS485/Wire2-Auto |
| 128 | RS232/DTE |
| 129 | RS232/DCE |
| 130 | RS232/AUTO |
The following table lists the characteristics of this property.
| Data Type | ![]() |
| Access, sessions use | Read/Write |