InformationModel.RemoteRead(variables, timeoutMilliseconds)

Returns a list of variables of interest.

static IEnumerable<RemoteVariableValue> RemoteRead(IEnumerable<RemoteVariable> variables, double timeoutMilliseconds);

Arguments

variables (IEnumerable<RemoteVariable>): The list of the variables of interest.
timeoutMilliseconds (double): The timeout period, expressed in milliseconds, after which the API throws an exception.

TIP: If not specified, the default value of the argument is
30000
(30 seconds).

Returns

IEnumerable<RemoteVariableValue>

The list of variables of interest, expressed as a pair of the following properties of the

RemoteVariableValue

class:

Variable (IUAVariable): The variable.
Value (UAValue): The value of the variable.

Example

In the following example, the values of three tag variables are read. The variables of interest are included and searched with the

Get()

method in the

remoteVariables

list, which is passed as the argument of the

RemoteRead()

method. The read values are then displayed using three different text boxes.

var tag1 = Project.Current.Get<Tag>("CommDrivers/CodesysDriver1/CodesysStation1/Tags/Application/PLC_PRG/VAR1");
var tag2 = Project.Current.Get<Tag>("CommDrivers/CodesysDriver2/CodesysStation1/Tags/Application/PLC_PRG/VAR1");
var tag3 = Project.Current.Get<Tag>("CommDrivers/CodesysDriver3/CodesysStation1/Tags/Application/PLC_PRG/VAR1");

var remoteVariables = new List<RemoteVariable>()
{
    new RemoteVariable(tag1),
    new RemoteVariable(tag2),
    new RemoteVariable(tag3),
};
var values = InformationModel.RemoteRead(remoteVariables).ToList();

textbox1.Text = values[0].Value;
textbox2.Text = values[1].Value;
textbox3.Text = values[2].Value;

Read or write field variables

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