Value of an I/NET DO Point does not stay after Manual Control in Vista

Issue

When controlling I/NET DO point in Vista, for example changing the value from "0" to "1", the value of the point won't stay. It changes back to "0".

Product Line

TAC I/NET, TAC Vista

Environment

I/NET integrated to Vista (I2V)

Cause

There are several attributes of an I/NET DO point (shown below in Vista). Usually the "control" attribute is used to manually control the DO point, while "value" is used to monitor the current state of the DO. If the "control" attribute is changed from "0" to "1", the real DO point will be on, but value of this "control" property point will change back to "0".

Resolution

Use the "control" attribute to manually control the DO point. Use the "value" attribute to monitor the current state of the DO point.