Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 253

• When the auto-negotiation function is used, there is a time lag before starting communication because it
requires the time to determine the communication speed and communication mode by FLP burst.
• It is recommended to set the auto-negotiation also in the communication partner when using the auto-
negotiation function. If auto-negotiation is not set in ether of the Ethernet-equipped module or partner
external device, communication mode cannot be identified and it is automatically set to half-duplex mode,
resulting in unstable communication.
• Set the lower communication speed when communication fails due to noise or other causes.
2 PARAMETER SETTINGS
2.3 Application Settings
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