Configuration
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MQTT > Connection1 > Will settings
Ø
Open the
Will settings
sub sub tab.
Figure 25: MQTT tab, Connection1 > Will settings sub sub tab (example)
Parameter
Description
Value / Value range
Will Enabled
Enable this option if you want to use the “will” feature of MQTT.
Enabled (default), Disabled
Will topic
Unique name for the topic, editable.
If left empty the firmware will use the string constant "will" prefixed
by the Prefix Will if enabled.
Max. 128 characters of text from
uppercase and lowercase letters
and underscore;
Default: [not specified]
Will Message
Payload forwarded by the broker to other clients subscribed to the
will topic in case of abnormal disconnection (when an MQTT
Disconnect packet was not sent to the broker).
If left empty, the string "Disconnected" is sent.
Text of uppercase and
lowercase letters and
underscore;
Default: [not specified]
Will QoS
Quality of Service Level for the Will Message.
0: "Only once": fire and forget
1: "At least once": acknowledged delivery
2: "Exactly once": assured delivery
Only once (default),
At least once,
Exactly once
Will Retain
Setting whether the broker shall store the history of a data value or
not.
Enabled (default), Disabled
Table 42: MQTT in port configuration for IO-Link Device, Connection1 > Will settings
Ø
For MQTT Connection Configuration make the following settings and
configuration steps:
·
Will Enabled
·
Will Topic
·
Will Message
·
Will Retain
NFD-3090-EIS-IOLM\W | Hardware, installation and commissioning
DOC200701UM02EN | Revision 2 | English | 2021-08 | Released | Public
© Hilscher 2020 - 2021
