This python package is used to handle ELT standard devices directly from python objects and through OPC-UA.
The package is intended to be used when a full instrument ELT software is not available but scripting needs to be done on devices and using the Low Level ELT software (Running on Beckhoff PLC).
A good exemple of the use case is making sequences of initialisation and movement of motors for AIT purposes without the
need to buil a high level ELT software.
The documentation (for version >=0.3) is [here](https://pydevmgr-elt.readthedocs.io/en/latest/index.html)
Sources are [here](https://github.com/efisoft-elt/pydevmgr_elt)
# Install
```bash
> pip install pydevmgr_elt
```
From sources :
```bash
> git clone https://github.com/efisoft-elt/pydevmgr_elt
> cd pydevmgr_elt
> python setup.py install
```
# Basic Usage
(since v0.5)
```python
from pydevmgr_elt import Motor, wait
with Motor('motor1', address="opc.tcp://192.168.1.11:4840", prefix="MAIN.Motor1") as m1:
wait(m1.move_abs(7.0,1.0), lag=0.1)
print( "position is", m1.stat.pos_actual.get() )
```
Can also be done in the old way:
```python
from pydevmgr_elt import Motor, wait
m1 = Motor('motor1', address="opc.tcp://192.168.1.11:4840", prefix="MAIN.Motor1")
try:
m1.connect()
wait(m1.move_abs(7.0,1.0), lag=0.1)
print( "position is", m1.stat.pos_actual.get() )
finally:
m1.disconnect()
```
```python
from pydevmgr_elt import Motor, DataLink
m1 = Motor('motor1', address="opc.tcp://152.77.134.95:4840", prefix="MAIN.Motor1")
m1_data = Motor.Data() # m1_data is a structure built with default value
m1_dl = DataLink(m1, m1_data) # create a data link use to fill m1_data to real hw values
with m1: # with conexte manager open/close a connection
m1_dl.download()
print( m1_data.stat.pos_actual, m1_data.stat.pos_error )
```
Open from an elt yaml configuration file as defined in ELT IFW v3
```python
from pydevmgr_elt import open_elt_device
motor1 = open_elt_device( "tins/motor1.yml" )
```
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