Mqtt Server Parameters; Mqtt Support (H7 Units Only) - Black Box EME160A User Manual

CHAPTER 1: HEADLINE
CHAPTER 5: ALERTWERKS PLUS MQTT CONFIGURATION
NOTE: if the "Broadcast sensor values periodically" option is not turned on, the unit will only send MQTT
packages when a sensor status or value reading change occurs.

5.2 MQTT SERVER PARAMETERS

Up to four servers can be configured. If you have an MQTT cluster, you can define all cluster nodes here, and all
nodes in the cluster will receive the messages.
Depending on the MQTT server's configuration, you may need to specify the username and password.
This is a server setting; AlertWerks Plus can connect without authentication when these fields are blank.
If the server requires authentication to accept data from the Gateway, by default the device's MAC address is used as
the Username.
For testing MQTT, toggle flag send values periodically, and set the broadcasting interval to 1 minute.
New values will appear in MQTT.
If you see status = 1 for a topic, it is disabled.
5.3 MQTTS SUPPORT (H7 UNITS ONLY)
On the newer H7 platform, the secured, encrypted MQTTS is supported in addition to the existing unencrypted
MQTT.
MQTT communication methods supported for MQTT on H7:
• unencrypted, unauthenticated (same as on F7 platform)
• unencrypted, authenticated username and password (same as on F7 platform)
• encrypted, unauthenticated
• encrypted, using client certificate
• encrypted, authenticated (username and password + SSL certificate)
For using the SSL (encrypted) method, a client .PEM x509 certificate must be uploaded.
It must be in the same format as the HTTPS certificate; it must contain the client's private key and certificate
combined, without a password.
NOTE: The maximum size of the uploaded .PEM file must not exceed 8 Kilobytes.
The client certificate doesn't support multiple client and server certificates combined into one .PEM file for
certificate chain validation.
The server's certificate has to be uploaded separately, if required (see below).
If the option "verify peer certificate" is turned on, the trusted CA certificate must be uploaded separately, and it has
to be valid (not expired).
If this option is turned off, the server CA certificate is not validated. It could be expired.
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