Writing a register

A device register can be written, based on the protocol the device supports

To access the API you must provide the `bearer token`.

See API Authentication

• Writing to a Modbus register
• Writing to a Generic 16 register

Writing to a Modbus register

Send a POST request to the API endpoint /api/orgs/{org-slug}/modbus with, for example, the body:

{
  "modbus_type": <"rtu" | "tcp">,
  "channel": <device channel>,
  "raw": [<array of bytes for the Modbus request>]
}

raw is an array containing the Modbus request.

Replace {org-slug} with your organisations slug.

You can find your slug:

• in the organisations settings page
  
• from the organisations API

This will return the Modbus response for the request, for example:

{
  "data": [<array of bytes for the Modbus response>]
}

Example:

curl -X 'POST' \
'https://iotsimhub.net/api/orgs/<org-slug>/modbus' \
-H 'accept: application/json' \
-H 'Content-Type: application/json' \
-H "Authorization: Bearer <token>" \
-d '{ "modbus_type: <"rtu" | "tcp">,
"channel": <channel>,
"data": [<Modbus data>] }'

API error codes

The endpoint will return errors in the format:

{
  "errors": {
    "details": <error response>
  }
}

Writing to a Generic 16 register

Send a POST request to the API endpoint /api/orgs/{org-slug}/generic16/write with, for example, the body:

{
  "channel": <device channel>,
  "device": <device address>,
  "address": <start memory address for write>,
  "data": [<array of 16 bit values to write>]
}

Replace {org-slug} with your organisations slug.

you can find your slug in the organisations settings page

This will return the Modbus response for the request, for example:

{
  "data": [<value from register>]
}

Example:

curl -X 'POST' \
'https://iotsimhub.net/api/orgs/<org-slug>/generic16/write' \
-H 'accept: application/json' \
-H 'Content-Type: application/json' \
-H "Authorization: Bearer <token>" \
-d '{ "channel": <channel>,
"device": <device>,
"address": <start address>,
"data": [<array of 16 bit values to write>]}'

API error codes

The endpoint will return errors in the format:

{
  "errors": {
    "details": <error response>
  }
}