User`s manual

FX communication
Computer link 7
7-12
7.5 Communication Timing Chart
7.5.1 Reading Data from Programmable controller
7.5.2 Writing Data to Programmable Controller
E N Q
Computer
Interface
Programmable
controller
A C K
S T X
Wait(TW) T 3 T4 T 5
More than two-scan
delay is needed.
Read process
This time becomes 0 when the message wait time is not set or
when the wait time is less than the processing time needed by
the programmable controller.
T0 T1 T2
Programmable
controller program
END Step 0 END Step 0 END Step 0 END
If the wait time has expired the response is sent at completion of the
END process, otherwise the wait time is checked again during the next
END process.
Writing data
E N Q
Computer
Interface
Programmable
controller
Wait(TW) T3
Write process
This time becomes 0 when the message wait time is not set or
when the wait time is less than the processing time needed by
the programmable controller.
T0 T1 T2
Programmable
controller program
END Step 0 END Step 0 END Step 0 END
If the wait time has expired the response is sent at completion of the
END process, otherwise the wait time is checked again during the next
END process.