Yaskawa MotionWorks IEC Toolboxes - Manual (Page 543)

Yaskawa Toolbox: Function Blocks
MotionWorks IEC61131-3 Toolboxes: 2013-09-13 530
Explicit_Message
This function block will write/read a block of data to/from an Ethernet/IP Target (Adapter) device via Explicit
Messaging. Unlike Implicit Messaging (a built in feature of the MPiec Series Controllers) which uses the UDP
protocol, Explicit Messaging uses TCP/IP.
This function block emulates the MSG function block in the AB RSLogix platform. The Explicit_Message function
block is best suited when an application requires unscheduled and less frequent updates like recipe transfer,
cam table transfer, job transfer etc. Explicit Messaging makes use of a request/response format for
communication.
Parameters
* Parameter Data Type Description
VAR_IN_OUT
B SourceElement ExplicitData
When writing a message to the Target (Adapter),
SourceElement is the data (as an array of bytes) that the
Scanner (MPiec Controller) will send to the Target.
B Destination ExplicitData When reading a message from the Target (Adapter), the