YASKAWA MP3000 Series - Page 95

2.4 Communications with MP-series Controllers
Message Functions
2-77
Ethernet Communications
 Busy
Specify the bit that shows that the message reception is in progress.
The Busy Bit is ON while a message reception or abort is in progress.
Keep the Execute Bit or Abort Bit turned ON while the Busy Bit is ON.
 Complete
Specify the bit that shows when the message reception has been completed.
The Complete Bit turns ON only for one scan when message reception or forced abort processing has been
completed normally.
 Error
Specify the bit that shows if an error occurred when receiving the message.
When an error occurs, the Error Bit will turn ON only for one scan.
The following diagrams show timing charts for the bit I/O items in the MSG-RCVE function.
• Normal Execution
• When Execution Is Aborted
t
Input: Execute
Input: Abort
Output: Busy
Output: Complete
Output: Error
To receive another message, keep
the Execute Bit ON even after the
completion of processing.
1 scan
t
Input: Execute
Input: Abort
Output: Busy
Output: Complete
Output: Error
To receive another message, keep
the Execute Bit ON even after the
completion of processing.
1 scan