タイミングチャート（EtherNet/IP）

Timing Chart (EtherNet/IP)

I/O timing for each command is explained here.
The signal timing through EtherNet/IP is equivalent to parallel IO, and command execution and data output are performed independently. This section explains the timing of command execution and data output through the EXE signal.

When executing a command with the EXE signal

Important

Control the EXE signal using the FLG signal.
Screen operation is not allowed when the EXE signal is turned ON. Make sure to turn the EXE signal OFF after executing a command.

For data output (with handshaking)

For data output (without handshaking)

Important

Set the data output cycle and time so that the following conditions are satisfied.
- Set the timeout setting so that the PLC timeout time is longer than the measurement processing time.
- Set the measurement tact interval so that the measurement tact interval is longer than the measurement processing time.
- Set an output cycle that is longer than the output time, but shorter than the measurement interval.
- Set the output time that is longer than the PLC cycle time and the EtherNet/IP communication cycle.
Since a reasonable amount of measurement tact time is required to have stable communications in an operation under high load, verify the operation under the conditions that are to be actually applied.
Since a large portion of the CPU load is allocated to measurement processing while the multiple input function is being used, a reduction in the performance (such as delayed response and packet loss), or a communication error may occur.
Do not use EtherNet/IP communication when the multiple input function is being used.
If the measurement interval is short, a communication error may occur depending on the measurement processing time and the PLC settings.Set a PLC timeout time longer than the measurement processing time, or increase the measurement intervals.