- Select the IED in the Plant Structure view.
- Select the GOOSE Controls tab in the tool pane.
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To add a new GOOSE control block, right-click the area containing the existing GOOSE control blocks and select New.
Figure 1. Creating a new GOOSE control block
- Browse to LLN0 under LD0 or any logical device to define where the GOOSE control block is to be placed.
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Give a unique name to the GOOSE control block.
Figure 2. Naming a GOOSE control block
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In the Data set drop-down list, select the previously created data set to link with the GCB.
Figure 3. Data set drop-down list
Note: Data set entries in a data set linked to the GCB can be modified from the GOOSE control block tab by selecting Data Set details in the shortcut menu. -
Edit the properties and addresses of the created GOOSE control block.
Edit at least MAC Address and APP ID.
Figure 4. GOOSE control block properties
Table 1. GOOSE control block properties GoCB property Description GoCB name
GOOSE control block name. The maximum length is 28 characters.
Application (AppID)
A unique GOOSE Identification string for each GoCB in the system. Recommendation is to define a device-specific value and not to use the default empty value. The maximum length is 64 characters.
t(min) (ms)
Indicates the maximum response time in milliseconds to data change. This time can be used by the receiver to discard messages that are too old. In principle, t(min) can vary depending on the data type, but for the IEDs, the value is always “10 ms” for sent data .
t(max) (ms)
Indicates the background "heartbeat" cycle time in milliseconds; the default value is “10 000 ms”. If there are no data changes, the IED still resends the message with the heartbeat cycle to enable the receiver to detect communication losses, that is, the communication is supervised.
Configuration Revision
Contains an integer value that is sent in every GOOSE message. The integer indicates the amount of changes in the data set. The receiver checks the message for configuration mismatches.
MAC Address
Multicast MAC address to which the specific GOOSE data is sent. The receiving IED filters the frames and starts to process them if a specific multicast address is defined in the configuration. It is recommended to have one unique multicast address per GoCB. The address range for GOOSE Multicast addresses is 01-0C-CD-01-00-00...01-0C-CD-01-01-FF
App ID
Unique HEX value application identifier for sending the GoCB within the system. It identifies the purpose of this particular data set. The value range is 0000...3FFF.
VLAN-ID
Used if the Ethernet switches in a station bus support VLAN. If static VLAN identifiers are defined, it also affects the switch port configuration. Value “000” indicates a non-configured VLAN and switches do not filter these messages on a port basis. This is recommended if there is no need to split the logical network. The VLAN identifier is a 3-character HEX value with range 000...FFF. Recommended values are 2...1001.
VLAN Priority
Used in networks supporting VLANs. The priority is used with network switches. The default value for GOOSE is “4” and the value range is 0...7.
Note: Both t(max) and t(min) are configurable. The default minimum setting for t(min) is "4 ms".
Note: The multicast MAC address is usually unique, and APP-ID must be unique.