Smartline V1 Transmitter Series
- class pymeasure.instruments.thyracont.smartline_v1.SmartlineV1(adapter, name='Thyracont Vacuum Gauge V1', address=1, baud_rate=9600, **kwargs)
Bases:
InstrumentThyracont Vacuum Instruments Smartline gauges with Communication Protocol V1.
Devices using Protocol V1 were manufactured until 2017.
Connection to the device is made through an RS485 serial connection. The default communication settings are baudrate 9600, 8 data bits, 1 stop bit, no parity, no handshake.
A communication packages is structured as follows:
Characters 0-2: Address for communication Character 3: Command character, uppercase letter for reading and lowercase for writing Characters 4-n: Data for the command, can be empty. Character n+1: Checksum calculated by: (sum of the decimal value of bytes 0-n) mod 64 + 64 Character n+2: Carriage return
- Parameters
adapter – pyvisa resource name of the instrument or adapter instance
name (string) – Name of the instrument.
address (int) – RS485 adddress of the instrument 1-15.
baud_rate (int) – baudrate used for the communication with the device.
kwargs – Any valid key-word argument for Instrument
- property cathode_enabled
Control the hot/cold cathode state of the pressure gauge.
- check_set_errors()
Check for errors after having set a property and log them.
Called if
check_set_errors=Trueis set for that property.If you override this method, you may choose to raise an Exception for certain errors.
- Returns
List of error entries.
- property device_type
Get the device type.
- property display_unit
Control the display’s pressure unit.
- property pressure
Get the pressure measurement in mbar.
- read()
Reads a response message from the instrument.
This method also checks for a correct checksum.
- Returns
the data fields
- Return type
string
- Raises
ValueError – if a checksum error is detected
- write(command)
Writes a command to the instrument.
This method adds the required address and checksum.
- Parameters
command (str) – command to be sent to the instrument