IronPython script error code 0xfffb4e36

[xhuang2]

import time
import NIVeriStand
from NIVeriStand import NIVeriStandException

wks = NIVeriStand.Workspace2("localhost")
SYSDEF = r"C:\Users\Public\Documents\National Instruments\NI VeriStand 2013\Projects\Pump\Pump.nivssdf"
print 30*"+"
wks.ConnectToSystem(SYSDEF, 1, 60000)
print 30*"*"
time.sleep(5)

The screenshot was attached.

I couldn't find out what this error code is from the NI web or help file.

Any idea?

[UKCraig · Accepted solution]

Hi,

It seems as though there is already a SDF deployed.

Before you call ConnectToSystem you could check for a deployed SDF and disconnect it:

	state = wks.GetSystemState()
	if (state['state'] != 0):
		print 'Error! System state not expected!'
		print "Undeploying SDF: " + state['systemdefinition_file']
		wks.DisconnectFromSystem('',1)

[xhuang2]

Hi UKCraig,

I did as you suggested.  The weird thing is GetSystemState returned a non-zero value, which I could still read out the correct channel value 

[UKCraig]

Did you try disconnecting as I suggested above?

[xhuang2]

Hi UKCraig,

You're right.  When I used disconnecting, it worked!  It will first disconnect the system and deploy it again.   If I'd like only to read some channel values out from the running workspace GUI, I don't need to use the connectToSystem methon in python script.

Thanks a lot!