Runtime: Added PostStart methot to PLCObject, called after PLC is started, with all libraries and python object already created, and python extensions "Start" methods being called.
This is called before python thread processing py_eval blocks starts. Example purpose: attach additional ressource to web services
<?xml version='1.0' encoding='utf-8'?>
<PyFile xmlns:xhtml="http://www.w3.org/1999/xhtml">
<variables>
<variable name="Power_ON" type="BOOL"/>
<variable name="Power_OFF" type="BOOL"/>
<variable name="DrawTest" type="BOOL"/>
<variable name="DrawLogo" type="BOOL"/>
<variable name="DrawEscher" type="BOOL"/>
<variable name="Detect_Circle" type="BOOL"/>
<variable name="XaxisPos" type="INT"/>
<variable name="YaxisPos" type="INT"/>
<variable name="ZaxisPos" type="INT"/>
<variable name="TaxisPos" type="INT"/>
<variable name="XaxisMinus" type="BOOL"/>
<variable name="YaxisMinus" type="BOOL"/>
<variable name="ZaxisMinus" type="BOOL"/>
<variable name="TaxisMinus" type="BOOL"/>
<variable name="XaxisPlus" type="BOOL"/>
<variable name="YaxisPlus" type="BOOL"/>
<variable name="ZaxisPlus" type="BOOL"/>
<variable name="TaxisPlus" type="BOOL"/>
<variable name="DrawTestBtn" type="BOOL"/>
<variable name="DrawTestBtn2" type="BOOL"/>
</variables>
<globals>
<xhtml:p><![CDATA[
import ctypes
import wx, sys
AxisList = ["X","Y","Z","T"]
PwrButtons = ['Power_ON',
'Power_OFF']
ActionButtons = ['Detect_Circle',
'DrawTest',
'DrawLogo',
'DrawEscher']
class ThreeDee(wx.StaticText):
def __init__(self, *args, **kwargs):
self.initialized = False
kwargs["style"] = wx.ALIGN_CENTRE_HORIZONTAL
super(ThreeDee, self).__init__(*args, **kwargs)
self.SetFont(wx.Font(24, wx.SWISS, wx.NORMAL, wx.BOLD))
self.positions = [0.]*4
self.Message = None
self.NegLimits = None
self.Disk = None
def UpdatePositions(self, positions):
# get globals from PLC
self.positions = positions
self.SetLabel(
((self.Message +'\n\n') if self.Message else '' )+
" ".join(["%s %+.2f"%(axis,self.positions[i])
for i,axis in enumerate(AxisList)]))
def MakeButtonFunc(window, sizer, btname):
def ButtonDown(event):
setattr(PLCGlobals,btname,1)
event.Skip()
def ButtonUp(event):
setattr(PLCGlobals,btname,0)
event.Skip()
obj = wx.BitmapButton(window, -1, wx.Bitmap('%s.png'%btname))
sizer.Add(obj, 2, wx.EXPAND, 0)
obj.Bind(wx.EVT_LEFT_DOWN, ButtonDown)
obj.Bind(wx.EVT_LEFT_UP, ButtonUp)
return obj
def UpdPos(self):
positions = [getattr(PLCGlobals,axname+"axisPos") for axname in AxisList]
self.window_1.UpdatePositions(positions)
Class_wxglade_hmi.UpdPos = UpdPos
#def UpdatePositions(self, event):
#
# positions = [getattr(PLCGlobals,axname+"axisPos") for axname in AxisList]
#
# self.window_1.UpdatePositions(positions)
#
# event.Skip()
#Class_wxglade_hmi.UpdatePositions = UpdatePositions
def CleanSizer(sizer):
sizer_len = sizer.GetItemCount()
if sizer_len > 0:
for i in reversed(range(sizer_len)):
sizer.Remove(i)
initorig = Class_wxglade_hmi.__init__
def Init(self,*args,**kargs):
initorig(self,*args,**kargs)
sizer = self.GetSizer().GetItem(1).GetSizer().GetItem(0).GetSizer()
CleanSizer(sizer)
self.main_buttons = map(
lambda btname: MakeButtonFunc(self, sizer, btname), PwrButtons)
sizer = self.GetSizer().GetItem(1).GetSizer().GetItem(1).GetSizer()
CleanSizer(sizer)
self.main_buttons = map(
lambda btname: MakeButtonFunc(self, sizer, btname), ActionButtons)
self.axis_buttons = map(
lambda axis:( MakeButtonFunc(self, sizer, axis+"axisMinus"),
MakeButtonFunc(self, sizer, axis+"axisPlus")),
AxisList)
# self.timer = wx.Timer(self, -1)
# self.Bind(wx.EVT_TIMER, self.UpdatePositions, self.timer)
# self.ShowFullScreen(True,wx.FULLSCREEN_ALL)
# wx.CallAfter(self.timer.Start,200)
Class_wxglade_hmi.__init__ = Init
def SetPLCTestBtnGlobalVar(self, evt):
setattr(PLCGlobals, "DrawTestBtn", evt.GetEventObject().GetValue())
def SetPLCTestBtn2GlobalVar(self, evt):
setattr(PLCGlobals, "DrawTestBtn2", evt.GetEventObject().GetValue())
]]></xhtml:p>
</globals>
<init>
<xhtml:p><![CDATA[
]]></xhtml:p>
</init>
<cleanup>
<xhtml:p><![CDATA[
]]></xhtml:p>
</cleanup>
<start>
<xhtml:p><![CDATA[
]]></xhtml:p>
</start>
<stop>
<xhtml:p><![CDATA[
]]></xhtml:p>
</stop>
</PyFile>