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Configuring Device Channels

Device Channels are the pathways for communication between the HMI and the devices in the system. The sections below describe how to create and edit Device Channels on the platform in more detail.

Creating and Editing a Device Channel

To create a new channel, follow these steps:

1. Access Devices → Channels.
2. Click on the plus icon.
3. Choose a Protocol and fill in the Channel Name and Description fields. The table at the end of this section describes each option available.
4. Click OK.

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To configure or edit an existing channel, follow these steps

1. Access Devices → Channels.
2. Double-click the property you wish to edit on the row corresponding to the channel you want to modify.
3. Edit the property fields.

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Device Channel Properties

The following table describes each available property you can configure when editing a channel:

Configuration Workflow

The typical configuration workflow for the Device Module has the following sequence:

Device Module Configuration Workflow

Action

Where 

Comments

Create Channels

Devices → Channels

Identify the required field devices and protocols the project requires, create channels accordingly.

Create Nodes

Devices → Nodes

Identify the Network addresses and relevant information to all stations and devices that need connectivity.

Map Tags to Point addresses

Devices → Points

Optionally, you can Copy Tags from Excel/CSV from Excel or execute Import Wizards.

Create or Customize AccessTypes

Devices → AccessTypes

Optionally, you can optimize the communication, grouping Points with similar requirements to the same AccessType.

Creating Channels

To create channels:

• Go to Edit → Devices → Channels.

• Click Create New.

• The Create New Channel window displays.

• Enter or select information, as needed.

• Click OK. The channel is added as a new row in the table

To edit device channels:

• Go to Edit → Devices → Channels.

• To add or remove a column, right-click the column heading area and select or deselect columns.

• Edit the fields on the row corresponding to the channel you want to modify.

Creating Nodes

Nodes are the devices or PLCs on the network that you communicate with. You can enter the settings for your nodes as usual through the Engineering Workspace. You can also import settings from an OPC server or from another data source. See "Importing PLC Addresses" below.To configure nodes:

• Go to Edit → Devices → Nodes.

• Enter or select information, as needed.

• To add or remove a column, right-click the column heading area and select or deselect columns.

Device Node Configuration Properties

Column

Description

Name

Enter a name for the node. The system lets you know if the name is not valid.

Channel

Select the channel for this node. For more information about the configuration for common protocols, click Help at the top of the tab.

PrimaryStation

Enter the information required to access the primary node, based on the protocol selected.

Working with Channel

Stop and Start Commands

After creating a solution, you may face issues that compromise the communication with the field device. In such moments, instead of restarting the entire system, you may solve the problem by restarting the channel. You can perform such tasks using scripts, avoiding shutting down the entire system. To do so, follow these steps:

1. Access Scripts → Classes

2. Create a new class using the C# code below, where "XXXX" refers to the name of the channel.

   Code Block
   language c#
   @Device.Channel.XXXX.Stop() @Device.Channel.XXXX.Start()

   
   

You can create a Task or Expression to call this class when needed and do it in other ways that don't use the class.

See the Remote Channels page for more information.

public void Stop()
{
	@Device.Channel.ControlLogix.Stop(10);
}

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For Modbus protocol:

• For a Serial interface, the SlaveID is the device's slave address on the Modbus network. Valid addresses are 1-247. 
• For a MultiSerial interface, select the number of the ComPort and enter the SlaveID, which is the device's slave address on the Modbus network. Valid addresses are 1-247. 
• For a TCPIP interface: 
  • IP - Identification of the slave device's address. 
  • Port - TCP port where the slave device is connected (default is 502). 
  • SlaveID - Device slave address on the Modbus network. Valid addresses are 1-247. 

• For OPC interfaces:
• Service URL - Defines the location of the OPC server. 
  • You must configure the DCOM settings to access an external OPC server. Contact support for assistance. 
• RefreshRate - Server refresh rate. 
• AllTemsSameGroup - Adds all items to a single group OPC. This way, only one connection is created with the OPC server. 

• WaitAfterConnect - The time the application waits, after a project starts, to attempt to communicate. 

BackupStation

Enter the information required, based on the protocol, to access the backup node. When the backupstation is defined and a communication failure occurs on the primary station, the system automatically attempts to establish communication with the backup station.

SyncDate

Date that the import was done (read only field).

SyncStation

Information about the station where the import was done - Station IP, Port and Slot - (read only field).

SyncSettings

Information about the settings used by the system to import the file (read only field).

Description

Enter a description for this node.

Creating Points

Data Points define specific values for each node that can be accessed using tags. The number of data points you can configure is related to both the ProductModel that is configured for the project and your software license. 

To configure data points:

To add or remove a column, right-click the column heading area and select or deselect columns.

Device Points Configuration Properties

Field/Column

Description

TagName

Enter a tag name or click "..." to select a tag. You can also create a new tag.

Node

Select the node for this data point.

Address

Enter the register address which is based on the PLC and protocol for this data point and tag.

DataType

Select the data type you want to use. Most protocols should use the native option. When native is used, the protocol will automatically handle the data conversion.

Selecting a different data type overrides the defaults. Some options may not be applicable to the selected node. Make sure you know the applicable data types.

Modifiers

If the PLC uses a different byte order, select the options you want. You can change the position bit, byte, Word, or Dword of the data that is communicated.

AccessType

Select the access type for this data point. You can define and configure the access types. See Access Types below.

Scaling

If you want to manipulate the tag value, select the options you want.

When the data is read in the Equation option:

• Div - The system will divide the register value by what you enter here. 
• Add - The system will add the amount you enter here as an offset of the result of the division. 

• For a write operation, the calculations are the opposite (multiple by the Div value, then subtract the Add value).

Importing PLC Addresses

When creating communication nodes and data points, you can import them if they are defined in another data source in the following ways:

• You can copy and paste the contents of a table from Excel. The tables can have different columns or order, as long you include the title of the column in the copy and paste operations. The system will put the data in the expected columns, even if the order is different in the source and target tables.

• You can import the data from csv files.

• For Rockwell ControlLogix devices, you can import from L5k definition files.

• You can use various Import Wizards from many data sources

• For OSIsoft® PI database, there is a FactoryStudio version to share definitions.

• A programming API is available that can populate the tables from code, even from runtime execution when it is necessary.

Access Types Configuration

Access types define the specific methods for reading and writing the values of each data point. This could be the polling rate, whether or not a read is performed on startup, and whether or not unsolicited input is accepted. FactoryStudio comes with a few predefined access types that you can use, or you can create your own.

To configure access types:

Enter or select information, as needed.

Device AccessType  Configuration Properties

Field/Column

Description

Name

Enter a name for this access type.

Read

ReadPolling

Select when you want to enable read polling.

ReadPollingRate

Enter how often the address value is retrieved.

ReadTrigger

Enter an object property that tells the system when to read the value.

ReadOnStartup

When selected, the system reads the value on startup.

ReadStatus

Enter an object property that receives the status of the read communication.

ReadCompleted

Enter an object property that receives an indication that the reading is completed. The value will change between 0 and 1 every time a reading is completed.

Write

WriteEventEnable

Select to enable the writing of values to the PLC.

WriteEvent

Select when the value is written.

WriteTrigger

Enter an object property that tells the system when to write the value.

WriteStatus

Enter an object property that receives the status of the write communication.

WriteCompleted

Enter an object property that receives an indication that the writing is completed. The value will change between 0 and 1 every time a writing is completed.

Settings

AcceptUnsolicited

When selected, the system accepts values from the PLC, even if the polling time has not yet elapsed.

UseStaticBlocks

Select to use the block command field

BlockCommand

Enter a definition for each block that will be created. Check the driver documentation to see if the specific driver uses this field and the valid values.

Description

Enter a description for the access type.

One very efficient AcceesType is to read data when it is being used by the application. Go to the section OnDisplayOrServer for more information.

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