Kepware Iot Gateway

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Overview

Client-mode REST API connectors for PTC Kepware Server (KEPServerEX, ThingWorx Kepware Server, Kepware Edge): read server about and health, list channels, devices, tag groups and tags, create, update and delete tags through the Configuration API, read the event log, and browse, read and write live tag values through the IoT Gateway REST server. This is one of the templates in the Kepware (PTC KEPServerEX, ThingWorx Kepware Server, Kepware+) REST API app (kepware). Deploy it alongside the other connectors of that app when they depend on each other (for example a token connector plus an API connector).

Auth

Auth headers used by the template: Authorization: {value.json.authorization}.

Template parameters

Placeholder	Type	Description	Required
`RouteName`	string	Name of the Kepware Iot Gateway connector	no
`BaseUrl`	string	Kepware Iot Gateway base URL without trailing slash (e.g. https://YOUR_KEPWARE_HOST:39320)	yes

BASE_ADDRESS default: https://YOUR_KEPWARE_HOST:39320.

Events

Event	Method	Endpoint	Request topic	Response topic	Payload fields
`IotgwBrowse`	GET	`/iotgateway/browse`	`historian/kepware/iotgw-tag/browse`	`historian/kepware/iotgw-tag/browse/response`	`authorization`
`IotgwRead`	GET	`/iotgateway/read?ids={value.json.ids}`	`historian/kepware/iotgw-value/get`	`historian/kepware/iotgw-value/get/response`	`authorization`, `ids`
`IotgwReadMany`	POST	`/iotgateway/read`	`historian/kepware/iotgw-value/read`	`historian/kepware/iotgw-value/read/response`	`authorization`, `body`
`IotgwWrite`	POST	`/iotgateway/write`	`historian/kepware/iotgw-value/write`	`historian/kepware/iotgw-value/write/response`	`authorization`, `body`

Deploy

Get the template card (JSON with template and metadata) from the broker, then deploy the connector:

mosquitto_pub -t '$SYS/Coreflux/Command' -m "-routeCode KEPWARE_IOT_GATEWAY"

The deployable connector from the REST API app, with BASE_ADDRESS already filled in:

DEFINE ROUTE KepwareIotGateway WITH TYPE REST_API
    ADD REST_API_CONFIG
        WITH BASE_ADDRESS "https://YOUR_KEPWARE_HOST:39320"
        WITH ENABLE_CLIENT "true"
        WITH USE_SSL "true"
        WITH REQUEST_TIMEOUT '30'
        WITH DEFAULT_CONTENT_TYPE "application/json"
    ADD EVENT IotgwBrowse
        WITH SOURCE_TOPIC "historian/kepware/iotgw-tag/browse"
        WITH DESTINATION_TOPIC "historian/kepware/iotgw-tag/browse/response"
        WITH METHOD "GET"
        WITH ENDPOINT "/iotgateway/browse"
        WITH HEADERS
            ADD "Accept" "application/json"
            ADD "Authorization" "{value.json.authorization}"
    ADD EVENT IotgwRead
        WITH SOURCE_TOPIC "historian/kepware/iotgw-value/get"
        WITH DESTINATION_TOPIC "historian/kepware/iotgw-value/get/response"
        WITH METHOD "GET"
        WITH ENDPOINT "/iotgateway/read?ids={value.json.ids}"
        WITH HEADERS
            ADD "Accept" "application/json"
            ADD "Authorization" "{value.json.authorization}"
    ADD EVENT IotgwReadMany
        WITH SOURCE_TOPIC "historian/kepware/iotgw-value/read"
        WITH DESTINATION_TOPIC "historian/kepware/iotgw-value/read/response"
        WITH METHOD "POST"
        WITH ENDPOINT "/iotgateway/read"
        WITH HEADERS
            ADD "Accept" "application/json"
            ADD "Content-Type" "application/json"
            ADD "Authorization" "{value.json.authorization}"
        WITH BODY "{value.json.body}"
    ADD EVENT IotgwWrite
        WITH SOURCE_TOPIC "historian/kepware/iotgw-value/write"
        WITH DESTINATION_TOPIC "historian/kepware/iotgw-value/write/response"
        WITH METHOD "POST"
        WITH ENDPOINT "/iotgateway/write"
        WITH HEADERS
            ADD "Accept" "application/json"
            ADD "Content-Type" "application/json"
            ADD "Authorization" "{value.json.authorization}"
        WITH BODY "{value.json.body}"

Deploy it with -addRoute (do not include ADD METADATA).

Usage example

Call IotgwBrowse by publishing a JSON payload to its request topic, and read the reply on the response topic:

mosquitto_sub -t 'historian/kepware/iotgw-tag/browse/response' &
mosquitto_pub -t 'historian/kepware/iotgw-tag/browse' -m '{"authorization": "<authorization>"}'

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Overview

Auth

Template parameters

Events

Deploy

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​Deploy

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Overview

Auth

Template parameters

Events

Deploy

Usage example

Related