How to create/delete datapoint by script

[vy.nguyenthanh@biendongco.vn]

I wanna create or delete automatically datapoint for datapoint type by script not manually. Can anyone help me?

[leoknipp]

For the creation/deletion of datapoints you can use the CTRL functions dpCreate()/dpDelete().

Best Regards
Leopold Knipp
Senior Support Specialist

[Indrani125]

Hi,
Is when I tried to create data point by taking input from user..the script does not work..is it possible to create through user or creation of multiple data points through script?

[gschijndel]

I do not think that there are any psychics here. So if you want to know why your script does not work, you should post your script code.

[Indrani125]

Hi,
Actually I wanted to know the possibility because when I am trying it is not happening.let me show my script and ui. Script is not working in case I want from user.It is working for script where I am defining type within script.attaching my UI also so that it can be related.

────────────────────────────────────────────────────────────────────────────────────────────────────
─// [PUSH_BUTTON1] [1] - [Clicked]

main()
{
if (dpExists("number_1")) DebugN("already exists");
else dpCreate("number_1","ExampleDP_Int"); // Create
dpCreate("TestDP", "PUMP1", 2); /*Create DP on the system with number 2*/
dpSetDescription("number_1.","Created through script");
DebugN(dpGetDescription("number_1."));
}
════════════════════════════════════════════════════════════════════════════════════════════════════
─// [PUSH_BUTTON2] [2] - [Clicked]
main()
{
string dpB = "number_1";
int retV;
retV = dpDelete(dpB);
DebugN(retV);
}
════════════════════════════════════════════════════════════════════════════════════════════════════
─// [TEXT_FIELD1] [8] - [Command]
// SimpleCtrlScriptStart {valid}
main()
{
EP_textFieldOut();
}

void EP_textFieldOut()
{
string sNewValue;
dyn_errClass err;
string sTmp;

getValue("", "text", sNewValue);
sTmp = sNewValue;
dpSetWait("System1:d1.type:_original.._value", sTmp);
err = getLastError();
if (dynlen(err) > 0)
errorDialog(err);
}

// SimpleCtrlScript {EP_textFieldOut}
// DP {System1:d1.type}
// Config {:_original.._value}
// DPType {string}
// SimpleCtrlScriptEnd {EP_textFieldOut}
════════════════════════════════════════════════════════════════════════════════════════════════════
─// [TEXT_FIELD2] [9] - [Command]
// SimpleCtrlScriptStart {valid}
main()
{
EP_textFieldOut();
}

void EP_textFieldOut()
{
string sNewValue;
dyn_errClass err;
string sTmp;

getValue("", "text", sNewValue);
sTmp = sNewValue;
dpSetWait("System1:d1.name:_original.._value", sTmp);
err = getLastError();
if (dynlen(err) > 0)
errorDialog(err);
}

// SimpleCtrlScript {EP_textFieldOut}
// DP {System1:d1.name}
// Config {:_original.._value}
// DPType {string}
// SimpleCtrlScriptEnd {EP_textFieldOut}
════════════════════════════════════════════════════════════════════════════════════════════════════
─// [PUSH_BUTTON3] [10] - [Clicked]

main()
{
if (dpExists("System1:d1.name:_original.._value")) DebugN("already exists");
else dpCreate("System1:d1.name:_original.._value","System1:d1.type:_original.._value"); // Create
dpCreate("TestDP", "PUMP1", 2); /*Create DP on the system with number 2*/
dpSetDescription("number_1.","created from user");
DebugN(dpGetDescription("System1:d1.name:_original.._value."));
}
════════════════════════════════════════════════════════════════════════════════════════════════════
─// [PUSH_BUTTON4] [11] - [Clicked]
main()
{
string dpB = "System1:d1.name:_original.._value";
int retV;
retV = dpDelete(dpB);
DebugN(retV);
}
════════════════════════════════════════════════════════════════════════════════════════════════════

[kilianvp]

even if the function to create a datapoint is already finished, in reality the datapoint is not yet created. it is therefore a good idea to wait until the datapoint exists.

[adaneau]

Good practice is always to wait for return value:

int iStatus = dpCreate("number_1","ExampleDP_Int");

BR
Alexandre

[Indrani125]

Hi,
I am getting problem basically for user defined data type creation.It is working fine for integer data.from user I am taking value of data point type and name setting it into d1.name and d1.type..when user is pressing enter..these two data points name is also changing..but when i am invoking dpcreate and dpdelete using d1.name and d1.type..basically script for Pushbutton3 and Pushbutton4 is not working where I am passing argument after user set via text field.

[gschijndel]

It is really basic, which everyone should be able to manage on their own (or at least after some basic training).
But anyway this code should work for the 'dpCreate'.

Code: Select all

if (dpExists(TEXT_FIELD2.text))
{
  DebugN("already exists");
}
else
{
  dpCreate(TEXT_FIELD2.text, TEXT_FIELD1.text); // Create
}

dpSetDescription(TEXT_FIELD2.text, "created from user");

string description;
dpGetDescription(TEXT_FIELD2.text, description);
DebugN(description);

[Indrani125]

Hi,
Thank you..it is working for creation when I am taking text from textfield.I tried same for delete too..as I want to delete the data point node created dynamically through script so replaced number_1 with text from textfield..but in that case it is not working..can you please guide what went wrong?

main()
{
string dpB1 ="TEXT_FIELD2.text";
int retV1;
retV1 =dpDelete(dpB1);
DebugN(retV1);
}