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ICP DAS PMC-523x/PMC-224x/PMD Series User Manual
iv. Check "Enable" or "Disable" in the "Initial Status" field to enable the
initial connection status with the Broker. If the user clicks "Enable", it
means the PMC/PMD will start the communication with the Broker
after it is powered on.
v. Enter the Broker IP address (or domain name) in the "Address" field.
vi. Enter the Broker Port number in the "Port" field.
vii. If the Broker requires account and password validation, please select
the "Enable" checkbox in the "Authentication" field, and enter the
login ID and password in the "ID" and "Password" fields to login into
the Broker. If the Broker doesn't need account and password
validation, uncheck the "Enable" checkbox and go directly to next
step.
viii. Enter the Client ID information in the "Client ID" field. The Client ID
is used for Broker to verify if the MQTT Client is allowed to connect
to the Broker or not. If the Broker does not require Client ID for the
connection, this field can be ignored.
ix. If the SSL/TLS encryption mechanism is required for the connection
between the Broker and the PMC/PMD via MQTT, click the "Enable"
checkbox of the "Encryption" field to enable this function.
x. The value in "keep alive Time" field defines the maximum time that
should pass without communication between the PMC/PMD and the
Broker. The PMC/PMD will ensure that at least one message travels
across the network within each keep alive period. In the absence of a
data-related message during the time period, the PMC/PMD sends a
very small MQTT "ping" message, which the Broker will
acknowledge. The keep "alive interval" enables the PMC/PMD to
detect when the Broker is no longer available without having to wait
for the long TCP/IP timeout. The unit of the value is second.
xi. To verify whether your Broker setting is correct, click "Testing" in the
"Connection Test" section, then PMC/PMD will try to connect to the
Broker and reply the connection status.
xii. Click the "Enable" checkbox in the "Last Will" field to allow the
Broker to send the alarm Topic to other MQTT client devices when
PMC/PMD lost connection to the Broker. After clicking the "Enable"
checkbox, the setting of Last Will Topic, Message content and QoS
will be brought up.
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