Mitsubishi Electric MELSEC iQ-F Series User Manual page 168

■Certificate function ready-to-enable state (Un\G108899)
This area shows whether the functions (e-mail function and MQTT communication function) that use certificates finish reading
certificates and are ready for communications.
Prepare the functions that use certificates to be ready for communications and turn on b1 and b0 of this buffer memory for
each function.
When the communication protocol with the external device used for the e-mail function or the MQTT communication function
is set to TCP, b1 and b0 of this buffer memory are unconditionally turned on for each function.
MQTT diagnostic information (overall)
■MQTT function status (Un\G108900)
This area stores MQTT function operating status.
• 0: Disable
• 1: Being executed
• 2: Stop
■Session status (Un\G108901)
b0 to b2: Session 1
■Latest error code (Un\G108902)
This area stores the latest error code.
MQTT connection diagnostics
■Connection number (Un\G108903)
This area stores the connection number of the connected session.
• 1 to 32
■Session status (Un\G108904)
This area stores the status of the connected session.
• 0: Not connected
• 1: Establishing connection
■Will setting (Un\G108907)
This area stores Will status, QoS, and Retain of the connected session. b0: Will status
• On: Valid
• Off: Invalid
b2 and 1: Will QoS (0 to 2)
b3: Will Retain
• On: Valid
• Off: Invalid
■Connection time (minutes) (Un\G108908 to Un\G108909)
This area stores the connection time (in minutes) of the connected session.
■Receive count (Un\G108910 to Un\G108911)
This area stores the receive count in the connected session.
■Total receive size (byte) (Un\G108912 to Un\G108913)
This area stores the total receive size (in bytes) in the connected session.
■Transmission count (Un\G108914 to Un\G108915)
This area stores the transmission count in the connected session.
■Total transmission size (byte) (Un\G108916 to Un\G108917)
This area stores the total transmission size (in bytes) in the connected session.
■Number of discarded packets (Un\G108918 to Un\G108919)
This area stores the number of discarded packets in the connected session.
APPX
166
Appendix 4 Buffer Memory