Read and Write Data

GD(tagnumber)

Get data for input tag “tagnumber”.

Syntax: result = GD(tagnumber)

Remarks: GD returns the current value for the input tag in location “tagnumber”.

Example: This example gets the current value for Input tag number 9.

Result = GD(9)               

Tag(tagnumber, writevalue,datetime)

Write data to output tag “tagnumber”.

Syntax: Tag(tagnumber, writevalue,optional datetime)

Remarks: This function writes the value “writevalue” as the current value of the output tag in location “tagnumber”. It defaults to writing that value with a timestamp equal to current time. An optional third parameter allows the user to set a specific timestamp to write out data, which should be a time equal to current time or in the past, not a future point. 

Example: This example sets the current value for the output tag in location 9 to 30.5.

Tag(9, 30.5)