/device/tx/0  - update data in an existing device 0
Payload: comma separated data
register values to be updated

DEVID/app2wm/modbus/tx/0 - send data on modbus 0
Payload - hex bytes
00112233AABBCC
Response data:
DEVID/wm2app/response/modbus/rx/0
Data: Hex bytes from modbus channel

DEVID/app2wm/ - other JSON commands
Payload:  JSON DATA

getroles
action:"getroles" - get role values
req_id: <optional request id>
filter: <optional filter string>
Response:
/DEVID/wm2app/response
JSON object:
{result: OK
req_id: <optional id that was passed>
roles: { role_name1:value, role_name2, ...}
}

exec
{action:exec
script: /path/to/script.cgi}
response:
/DEVID/wm2app/response
{result:ERROR or OK,
req_id: <optional id>
script: script name
}

getcsvdata
{action:getcsvdata,
filename: log file name (i.e. /logs/2024/12/20241201_0.csv)
columns: comma separated list fo columns
interval: interval in minutes between entries
}
response:
/DEVID/wm2app/response
{result: OK,
req_id: <optional id>
csv_data: csv data matching query
}

setglobal
{action:setglobal,
variable: <global name>
value: <value>
response:
/DEVID/wm2app/response
{result: OK,
req_id: <optional id>
<variable name>: <value>
}

getglobal
{action:getglobal,
variable: <global name>
response:
/DEVID/wm2app/response
{result: OK or NOT_FOUND,
req_id: <optional id>
<variable name>: <value>
}