ICP DAS PMC-523x/PMC-224x/PMD Series User Manual
341
Appendix VII
：
Change the value of output channel of module or
Internal Register by MQTT protocol
PMC/PMD supports the MQTT protocol. User can use it to change the value of the
Internal Register of PMC/PMD or the value of the output channel of I/O module or
power meter module which connect to PMC/PMD. Based on MQTT, user just needs
to publish the specific topics to Broker, and PMC/PMD will automatically subscribe
and receive the specific topics to complete the action. Following will list the format
of Public topic to the related output channel of module and Internal Register.
DO channel of ICP DAS XV-Board
Topic
Prefix
/SET/xvboard/do/
channel_no
Prefix
Please refer to
channel_no
0~15
Message
0 or 1
AO channel of ICP DAS XV-Board
Topic
Prefix
/SET/xvboard/ao/
channel_no
Prefix
Please refer to
channel_no
0~15
Message
Floating value
The DO channel of ICP DAS I/O module or power meter module
Topic
Prefix
/SET/
interface
/
module_no
/do/
channel_no
Prefix
Please refer to
interface
com3, com4 or lan
module_no
1~16
channel_no
0~15
Message
0 or 1
