ABB DDI01 Output expansion card

The IP Address field should be set to the IP address of destination station for produced data or source station for consumed data. Producer Exchange IP address: If the cast type is set to "U" for a produced exchange, the address should be set to IP address of the specific node to receive (consume) the data. If the cast type is set to "B" for produced data, set the IP to either a network (255.255.255.255) or subnet (192.168.0.255) broadcast address. If the cast type is set to "M" for produced data, set the IP address to a valid multicast address Important: Use Multicast whenever the module produces data to be consumed by at least two other modules. Using Unicast for these applications can cause data transmission delay when at least one of the consumer modules is powered down.

Multicast Address Assignments

Multicast group addresses 224.0.7.1 to 224.0.7.32 are reserved to allow for designation of up to 32 multicast groups. The following table shows the relationship between multicast group parameters and IP addresses. Refer to Underlying Protocol Requirements and Constraints for more detailed information on IP and UDP addresses limitations.Consumer Exchange IP address: For consumed messages, this parameter should be set to the IP address of the producer generating the specific exchange data. The combination of the IP address and the exchange ID uniquely identify the exchange to the system.

Exch ID

The Exch ID field defines the Exchange ID for this message, and must be unique for each station. For produced exchanges, the combination of the module IP address and the entered Exchange ID uniquely define a specific exchange to the network. For consumed exchanges, the Exchange ID and IP address in each message are compared to those defined in the Exchange List to determine which exchanges to consume. The other parameters defined in the Exchange List then determine how much data to receive and where to place that data in the module’s internal database.

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