Moin,

is it possible to read the entire array in a Script?

I tried it, but the values don't match the actual tag Array.

let a = HMIRuntime.Tags("Rezept_Speichern[0]").Read();
let b = HMIRuntime.Tags("Rezept_Speichern[1]").Read();
let c = HMIRuntime.Tags("Rezept_Speichern[2]").Read();
let d = HMIRuntime.Tags("Rezept_Speichern[3]").Read();
let array_sp = HMIRuntime.Tags("Rezept_Speichern").Read();

LG 

Hi Faabsen!

This FAQ can help you!

-> Tips and tricks for creating scripts in WinCC (TIA Portal)

Hey,

I am using JavaScript in TIA V20. So the Answer is it is not possible to access the entire array? I have to copy it with a for loop.

LG

Hey,

USB_Name_Rezept is an Array[0..1999] of Byte and i set it to Block Array. After the read i wann write it on the USB Stick with WriteFileBinary. But it didnt work.

Greetings

You should be able to just do:

I have successfully read a tag that was an array like this before.

If you are working entirely in a script it might be useful to do .Read(1), this forces to update the tag before reading, otherwise if it is not currently visualized on a screen it might not be read correctly.

alanTI

If you are working entirely in a script it might be useful to do .Read(1), this forces to update the tag before reading, otherwise if it is not currently visualized on a screen it might not be read correctly.

 Hey
 .Read(1) is a really good hint, i struggeld sometimes with tags not read correctly.

I know that i can iterate through an Array. The Problem is that my Array is 0 to 1999 so i have to read 2k Tags. Siemens released the new function of reading an Array as a Block. But no one can tell me how to use it correctly. Not even the Siemens support.

LG

I have taken a look at the exmple posted on the forum:

Simple Sample and TIPs - Reading and writing of array as a block

It looks like the only difference is how these tags are interfaced to the PLC, using it inside the Wincc runtime seems equivalent to a normal array, besides the fact that you are forced to read it in its entirety.

"USB_Name_Rezept is an Array[0..1999] of byte"

I believe after doing Tags("USB_Name_Rezept").Read(); you will get a 2000 elements array, I suspect you are violating the length of a valid system folder path and/or filename length, if the string is even being generated at all.

I higly doubt that the implicit conversion of doing "string"+array will get you your desired end result. I would decode and trim the data before stringifying it explicitly.

are you getting any trace output while executing this script?
This is a retoric question, i am sure there are exceptions being thrown during the execution of this script, otherwise you will have your file output.

Spend the 2 minutes it takes to set up traceViewer, it is a fundamental tool while developing scripts.

Hey,

That is my Script.

export function Schaltfläche_2_OnDown(item, x, y, modifiers, trigger) {

if (HMIRuntime.FileSystem.IsDirectory("/media/simatic/X61/Rezept") == false){
HMIRuntime.FileSystem.CreateDirectory("/media/simatic/X61/Rezept");
}
var RezeptName = Tags("USB_Name_Rezept").Read();
var arrayBuffer;
arrayBuffer = Tags("USB_Rezept1").Read(HMIRuntime.Tags.Enums.hmiReadType.hmiReadDirect);
//arrayBuffer = new Int32Array([1,2,3]);
var Path = "/media/simatic/X61/Rezept/"+RezeptName;
var test = [1,2,3];
HMIRuntime.Trace("Typeof Path = " + (typeof Path));
HMIRuntime.Trace("Value Path = " + Path);
HMIRuntime.Trace("Typeof test = " + (typeof test));
HMIRuntime.Trace("Value test = " + test);

HMIRuntime.FileSystem.WriteFileBinary(Path, test);
}

Here is my TraceViewer Output.

session: 0001, trace: Trace(): Typeof Path = string

session: 0001, trace: Trace(): Value Path = /media/simatic/X61/Rezept/Inbetriebnahme

 session: 0001, trace: Trace(): Typeof test = object

session: 0001, trace: Trace(): Value test = 1,2,3

And here is my Error.

session: 0001, trace: FUNCTION_CALL Invoke failed(id=5, function='HMIRuntime->FileSystem->WriteFileBinary', error=0x80000004)

Call stack: (read in less than 1 ms)

at [Schaltfläche_2_OnDown] (/screen_modules/HMI_RT_1::Main/Events.js:45:25)

| HMIRuntime.FileSystem.WriteFileBinary(Path, test);

|--------------------------^

I don't know where my problem is. Path is a String and it works with WriteFile. But i can't write an array with WriteFileBinary.

LG