pydevmgr-core 0.5.2

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This python package is used as a core engine for any pydevmgr high level package.

The documentation is on its way, but one may be interested to higher level package such as

• pydevmgr_ua
• pydevmgr_elt

Python package to by used as substitute of a real device manager running in a ELT-Software environment when the full ELT-Software environment cannot be used.

Sources are here

Install

> pip install pydevmgr_core 

Basic Usage

pydevmgr_core is not indented to be used directly but used by other pydevmgr related package as a core engine.

For usage here is an example using pydevmgr_ua to access an OPC-UA node :

from pydevmgr_ua import UaRpc, UaNode, UaCom
from pydevmgr_core.nodes import InsideInterval
import time 

com = UaCom(address="opc.tcp://192.168.1.11:4840", prefix="MAIN")

target = 7.0

move = UaRpc( com=com, suffix="Motor1.RPC_MoveAbs", args_parser=[float, float])
pos = UaNode( com=com,  suffix="Motor1.stat.lrPosActual" )
test = InsideInterval( node = pos, min=target-0.1, max=target+0.1 )


try:
    com.connect()
    move.call( 7.0, 1 )
    while not test.get():
        time.sleep(0.1)

    print( "posisiotn is", pos.get() )
finally:
    com.disconnect()

Or using the highest level dedicated for ELT devices:

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()