ROD-4 MFC Controller
- class pymeasure.instruments.proterial.ROD4(adapter, name='ROD-4 MFC Controller', **kwargs)
Bases:
Instrument
Represents the Proterial ROD-4(A) operator for mass flow controllers and provides a high-level interface for interacting with the instrument. User must specify which channel to control (1-4).
rod4 = ROD4("ASRL1::INSTR") print(rod4.version) # Print version and series number rod4.ch_1.mfc_range = 500 # Sets Channel 1 MFC range to 500 sccm rod4.ch_2.valve_mode = 'flow' # Sets Channel 2 MFC to flow control rod4.ch_3.setpoint = 50 # Sets Channel 3 MFC to flow at 50% of full range print(rod4.ch_4.actual_flow) # Prints Channel 4 actual MFC flow in %
- ch_1
- Channel
- ch_2
- Channel
- ch_3
- Channel
- ch_4
- Channel
- check_errors()
Read all errors from the instrument and log them.
- Returns
List of error entries.
- check_get_errors()
Check for errors after having gotten a property and log them.
Called if
check_get_errors=True
is set for that property.If you override this method, you may choose to raise an Exception for certain errors.
- Returns
List of error entries.
- check_set_errors()
Read ‘OK’ from ROD-4 after setting.
- clear()
Clears the instrument status byte
- property complete
Get the synchronization bit.
This property allows synchronization between a controller and a device. The Operation Complete query places an ASCII character 1 into the device’s Output Queue when all pending selected device operations have been finished.
- property id
Get the identification of the instrument.
- property keyboard_locked
Set the front keyboard lock status.
- property next_error
Get the next error of the instrument (tuple of code and message).
- property options
Get the device options installed.
- read(**kwargs)
Read up to (excluding) read_termination or the whole read buffer.
- read_binary_values(**kwargs)
Read binary values from the device.
- read_bytes(count, **kwargs)
Read a certain number of bytes from the instrument.
- Parameters
count (int) – Number of bytes to read. A value of -1 indicates to read the whole read buffer.
kwargs – Keyword arguments for the adapter.
- Returns bytes
Bytes response of the instrument (including termination).
- reset()
Resets the instrument.
- shutdown()
Brings the instrument to a safe and stable state
- property status
Get the status byte and Master Summary Status bit.
- property version
Get the version and series number. Returns x.xx<TAB>S/N
- wait_for(query_delay=0)
Wait for some time. Used by ‘ask’ to wait before reading.
- Parameters
query_delay – Delay between writing and reading in seconds.
- write(command, **kwargs)
Write a string command to the instrument appending write_termination.
- Parameters
command – command string to be sent to the instrument
kwargs – Keyword arguments for the adapter.
- write_binary_values(command, values, *args, **kwargs)
Write binary values to the device.
- Parameters
command – Command to send.
values – The values to transmit.
**kwargs (*args,) – Further arguments to hand to the Adapter.
- write_bytes(content, **kwargs)
Write the bytes content to the instrument.
- class pymeasure.instruments.proterial.rod4.ROD4Channel(parent, id)
Bases:
Channel
Implementation of a ROD-4 MFC channel.
- property actual_flow
Measure the actual flow in %.
- property flow_unit_display
Set the flow units on the front display. Valid options are %, sccm, or slm. Display in absolute units is in sccm for control range < 10 slm.
- property mfc_range
Control the MFC range in sccm. Upper limit is 200 slm.
- property ramp_time
Control the MFC setpoint ramping time in seconds.
- property setpoint
Control the setpoint in % of MFC range.
- property valve_mode
Control the MFC valve mode. Valid options are flow, close, and open.