Receive message from linked phase request
The
Receive Message from Linked Phase
request allows phase logic to notify the FactoryTalk Batch
Server that it is prepared to receive a message or a set of messages from a linked phase. The Server scans the synchronization group for pending messages with matching message IDs. Configure the PXRQ instruction in Logix Designer
to send a request to wait for a message from a linked phase:External Request | Data Value Array Element | Value |
Receive Message from Linked Phase | DINT[0] | message ID |
DINT[1] | message value | |
DINT[2] | message value |
The data value array can contain up to 97 message values. The Server copies the messages to the receiving phase from the phase(s) that issued the
Send Message to One or More Linked Phases and Wait
request or the Send Message to One or More Linked Phases
request.
TIP:
In certain scenarios, a PXRQ instruction that terminates (stops scanning) prior to completion may no longer function properly unless logic to handle the abnormal termination conditions is provided. To detect and handle abnormal termination of a PXRQ request, create logic in the equipment phase Resetting state routine.
For a description of scenarios that cause the PXRQ instruction to terminate abnormally, along with symptoms of the problem and instructions on how to implement the necessary Resetting logic, see the
Abnormal Termination of PXRQ Instruction TechNote
available on the Rockwell Automation KnowledgeBase.Provide Feedback