IDEC MICROSmart FC6A Series User Manual page 566

11: SD M C
EMORY ARD
Download the MQTT Basic Settings
The MQTT basic settings can be downloaded to the Plus CPU module.
Computer
(WindLDR)
The files for MQTT Basic Settings can be downloaded by performing the following operations.
The Plus CPU module power is turned on when an SD memory card
to which a mqtt_basic_settings.ini file was saved in the \FCDATA01\
folder is inserted in the SD memory card slot.
While the CPU module is running, special internal relay M8271 is
turned on when an SD memory card to which a
mqtt_basic_settings.ini file was saved in the \FCDATA01\ folder is
inserted in the SD memory card slot.
An SD memory card to which a mqtt_basic_settings.ini file was saved
in the \FCDATA01\ folder is inserted in the SD memory card slot.
Notes:
The files for MQTT Basic Settings can be downloaded even if the CPU Module is write protected.

If you select Specify with SD memory card check box in MQTT Basic Settings on the MQTT Settings dialog box, and download that

ladder program, make sure to download the files for MQTT Basic Settings from the SD memory card.
If you clear Specify with SD memory card check box in MQTT Basic Settings on the MQTT Settings dialog box, and download that

ladder program, the MQTT basic settings set in the ladder program are used, even if files for MQTT Basic Settings are downloaded from an SD
memory card.
The root certificate, client certificate, and client private key downloaded from the SD memory card cannot be uploaded.

If an mqtt_basic_settings.ini file exists in the \FCDATA01\ folder on the SD memory card, the files for MQTT Basic Settings will be downloaded

to the Plus CPU module each time the Plus CPU module power is turned on. To avoid this from happening, use Delete files for MQTT Basic
Settings after download. For details, see "SD Memory Card Configuration Dialog Box" on page 11-22.
The MQTT communication does not work if you saved the pem-formatted root certificate, client certificate, or client private key in the SD

memory card and downloaded to the CPU module. Convert the files to the der format and save them to the \FCDATA01\TLS\ folder on the SD
memory card. You can use the SD Memory Card Configuration dialog box in WindLDR and the Data File Manager to convert pem files to
der files. For details on the Data File Manager, see Chapter 4 "Command Line" in the Data File Manager User's Manual.
For details on MQTT communication, see Chapter 17 "MQTT Communication" in the FC6A Series MICROSmart Communication Manual.

11-30
mqtt_basic_settings.ini
File
Save
Save
MQTT Basic Settings,
Certificates,
and Private Key
Operation
FC6A S MICROS
ERIES
SD Memory Card
Download
MQTT Basic Settings,
Certificates,
and Private Key
The setting contents specified by the mqtt_basic_settings.ini file are
downloaded to the Plus CPU module.
When downloading certificates and other files, the certificates and
private key in the der format saved in the \FCDATA01\TLS\ folder are
downloaded.
The download is not performed.
U ' M FC9Y-B1722
MART SER S ANUAL
Plus CPU Module
Action