Mitsubishi Electric MELSEC iQ-F Series Quick Start Manual page 34

3.
Download [Device certificate]. This certificate is required for writing to the FX5-ENET. (Page 37 Writing a certificate)
When downloading is completed, click the [Continue] button.
4.
The certificate is added to the list. Click the certificate ID created now.
4 CONFIGURING SERVER (MQTT BROKER) CONNECTION
33
4.1 Configuring Settings with AWS