Standa Controllers

Low-level Python or simplified wrapper modules to send commands to Standa controllers.

Currently Supported Models

• 8SMC5 - smc8.py

Features

• Connect to Standa Controllers
• Query state and parameters
• Move individual axes to absolute or relative positions

Usage

smc8.py Example

import time
from smc8 import SmcController

# Open connection examples  
dev = SmcController(log = False)
dev.connect(device_str = "192.168.31.123/9219", connection_type = "xinet")
# OR
dev.connect(device_str="/dev/ximc/00007DF6", connection_type = "serial")
time.sleep(.25)
# Initialize dev instance
dev.initialize() 

# checks status
status = dev.status() 

# Homes device
dev.home() 
time.sleep(5) #Give time for stage to move

# Query Position
pos = dev.get_pos() # Query Position

# Move to absolute position
dev.set_pos(position = 5) #positive ot negative
time.sleep(5)

# Move to position relative of its current pos
dev.set_pos(position = 10, abs_move = False) 
time.sleep(5)

# Perform absolute move
dev.move_abs(100)

# Perform relative move
dev.move_rel(-20)

print(dev.get_pos())   # Should be 80
dev.home()
time.sleep(5)
#Close connection
dev.disconnect()

🧪 Testing

Unit tests are located in tests/ directory.

TODO: Make "Mock test" for PPC102 get_position and get_status which threw errors and was removed. Assumed to be due to the byte and int convertion

To run tests from the project root based on what you need: Software check:

pytest -m unit

Connection Test:

pytest -m default

Functionality Test:

pytest -m functional