navigate.model.devices.stages.pi.PIStage

class navigate.model.devices.stages.pi.PIStage(microscope_name: str, device_connection: Any, configuration: Dict[str, Any], device_id: int = 0)

Bases: StageBase

Physik Instrumente (PI) Stage Class

__init__(microscope_name: str, device_connection: Any, configuration: Dict[str, Any], device_id: int = 0)

Initialize the Physik Instrumente (PI) Stage Class

Parameters:

• microscope_name (str) – Name of microscope in configuration

• device_connection (Any) – Hardware device to connect to

• configuration (Dict[str, Any]) – Global configuration of the microscope

• device_id (int) – Unique identifier for the device, by default 0

Methods

__init__(microscope_name, device_connection, ...)	Initialize the Physik Instrumente (PI) Stage Class
close()	Close the stage.
get_abs_position(axis, axis_abs)	Ensure the requested position is within axis bounds and return it.
get_position_dict()	Return a dictionary with the saved stage positions.
move_absolute(move_dictionary[, wait_until_done])	Move Absolute Method.
move_axis_absolute(axis, abs_pos[, ...])	Move stage along a single axis.
report_position()	Reports the position for all axes, and create position dictionary.
stop()	Stop all stage movement abruptly.
verify_abs_position(move_dictionary[, is_strict])	Ensure the requested moving positions are within axes bounds
wait_on_target([axes])	Wait on target

Attributes

pi_tools	Physik Instrumente (PI) device
pi_device	Physik Instrumente (PI) device
pi_axes	List of PI axes available.

close()

Close the stage.

get_abs_position(axis, axis_abs)

Ensure the requested position is within axis bounds and return it.

Parameters:

• axis (str) – An axis: x, y, z, f, theta

• axis_abs (float) – Absolute position value

Returns:

Position to move the stage to for this axis.

Return type:

float

get_position_dict()

Return a dictionary with the saved stage positions.

Returns:

Dictionary of stage positions.

Return type:

dict

move_absolute(move_dictionary, wait_until_done=False)

Move Absolute Method.

XYZF Values are converted to millimeters for PI API. Theta Values are not converted.

Parameters:

• move_dictionary (dict) – A dictionary of values required for movement. Includes ‘x_abs’, etc. for one or more axes. Expect values in micrometers, except for theta, which is in degrees.

• wait_until_done (bool) – Block until stage has moved to its new spot.

Returns:

Was the move successful?

Return type:

bool

move_axis_absolute(axis, abs_pos, wait_until_done=False)

Move stage along a single axis.

Parameters:

• axis (str) – An axis. For example, ‘x’, ‘y’, ‘z’, ‘f’, ‘theta’.

• abs_pos (float) – Absolute position value

• wait_until_done (bool) – Block until stage has moved to its new spot.

Returns:

Was the move successful?

Return type:

bool

report_position()

Reports the position for all axes, and create position dictionary.

Positions from Physik Instrumente device are in millimeters

Returns:

position_dict – Dictionary containing the position of all axes

Return type:

dict

stop()

Stop all stage movement abruptly.

verify_abs_position(move_dictionary, is_strict=False)

Ensure the requested moving positions are within axes bounds

Parameters:

• move_dictionary (dict) – A dictionary of values required for movement. Includes ‘x_abs’, ‘y_abs’, etc. for one or more axes. Expect values in micrometers, except for theta, which is in degrees.

• is_strict (bool, optional) – If True, return an empty dict if any axis is out of bounds.

Returns:

a verified moving dict {axis: abs_position}

Return type:

dict

wait_on_target(axes=None)

Wait on target

Parameters:

axes (list or tuple or str) – Axes to wait for or None to wait for all axes.

Returns:

Was the wait on target delay successful?

Return type:

bool

axes

List of stage axes available.

Type:

list

axes_mapping

Initial setting for all positions self.x_pos, self.y_pos etc are the true axis positions, no matter whether the stages are zeroed or not. All units are in microns.

device_connection

Device connection object.

Type:

Any

pi_axes

List of PI axes available.

Type:

list

pi_device

Physik Instrumente (PI) device

Type:

object

pi_tools

Physik Instrumente (PI) device

Type:

object

stage_feedback

Feedback alignment value for the stage. Default is None.

Type:

int

stage_limits

Whether the stage has limits enabled or not. Default is True.

Type:

bool