Configuring Explicit Messaging Using DATA_EXCH
Original instructions
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Overview
Use the DATA_EXCH function block to configure EtherNet/IP connected and unconnected explicit messages.
The Management_Param, the Data_to_Send, and the Received_Data parameters define the operation.
EN and ENO can be configured as additional parameters.
FBD Representation
Input Parameters
Parameter
Data type
Description
Address
Array [0...7] of INT
The path to the destination device, the content of which can vary depending on the message protocol. Use the ADDM function.
ActionType
INT
The type of action to perform. This setting = 1 (transmission followed by await reception).
Data_to_Send
Array [n...m] of INT
The EtherNet/IP and CIP request codes that define the type of message to send, plus any data that needs to be included with the request.
Refer to the to the topic Configuring the Data_To_Send Parameter.
Input/Output Parameters
Parameter
Data type
Description
Management_Param
Array [0...3] of INT
The management parameter, consisting of 4 words.
Output Parameters
Parameter
Data type
Description
Received_Data
Array [n...m] of INT
The EtherNet/IP response.