Now I am able to control the GPIO pins using TeslaSCADA. Actually earlier I was using Node red for logic building and GPIO control, may be it was interfering with teslascada.
My observation is that when the GPIO pins are triggered using Node red , it is not updated in TeslaSCADA.
TeslaSCADA can be used for HMI, but for logic building I have to used python or Node red. so how is it possible to use both, since the IO status is not updated in TeslaSCADA if triggered from other application like python or node red.