Kepware Configuration API SDK for Python

This is a package to help create Python applications to conduct operations with the Kepware Configuration API. This package is designed to work with all versions of Kepware that support the Configuration API including Thingworx Kepware Server (TKS), Thingworx Kepware Edge (TKE) and KEPServerEX (KEP).

API reference documentation is available on Github Pages

Prerequisites

Package supported and tested on Python 3.9 or later. Older versions support earlier Python 3 environments but have less functionality. All HTTP communication is handled by the urllib Python standard library.

Features

• Supports both HTTP and HTTPS connections with certificate validation options

SDK allows for GET, ADD, DELETE, and MODIFY functions for the following Kepware configuration objects:

Features	TKS/KEP	TKE
Project Properties (Get and Modify Only)	Y	Y
Connectivity (Channel, Devices, Tags, Tag Groups)	Y	Y
IoT Gateway (Agents, IoT Items)	Y	Y
Datalogger (Log Groups, Items, Mapping, Triggers, Reset Mapping Service)	Y	Y
Administration (User Groups, Users, UA Endpoints, Local License Server)	Y*	Y
Product Info and Health Status**	Y	Y

• Note (*) - UA Endpoints and Local License Server supported for Kepware Edge only
• Note (**) - Added to Kepware Server v6.13 / Kepware Edge v1.5 and later builds

Driver specific features:

Driver	Features
GE Ethernet Global Data	Exchanges, Ranges and Name Resolutions
Universal Device Driver	Profile Library

Methods to read the following logs:

Logs	TKS/KEP	TKE
Event Log	Y	Y
API Transaction Log	Y	Y

Configuration API Services implemented:

Services	TKS/KEP	TKE
TagGeneration (for supported drivers)	Y	Y
ReinitializeRuntime	Y*	Y
ProjectLoad and ProjectSave	Y	Y

Note (*) - Reinitialize service was implemented for Kepware Server v6.8+

Filtering, sorting and pagination query options are added for any collections methods (ex: get_all_devices() or get_all_channel()).

Generic REST methods are provided to use for functions not developed in SDK package. These are found in the Server Class in connection.py

Known Limitations

• Other property configuration for more complex drivers with objects besides channels, devices, tags and tag groups are not always explicitly defined
• Other supported plug-ins (EFM Exporter, Scheduler, etc) are not defined
• When using hostnames (not IP addresses) for connections, delays may occur under certain network configurations as the connection may attempt IPv6 connections first. IPv6 is not supported by Kepware servers at this time.

Installation

Package can be installed with pip using the following:

    pip install kepconfig

Key Concepts

NOTE: Detailed examples can also be found in the examples folder.

Create server connection

from kepconfig import connection

server = connection.server(host = '127.0.0.1', port = 57412, user = 'Administrator', pw = '')

# For HTTPS connections:
server = connection.server(host = '127.0.0.1', port = 57512, user = 'Administrator', pw = '', https=True)

For certificate validation, the SDK uses the OS/systems trusted CA certificate store. The connection uses the "create_default_context()" function as part of urllib as described at the following links:

• ssl.create_default_context
• ssl.SSLContext.load_default_certs
• set_default_verify_paths

For Windows OSes, the Kepware server's instance certificate can be loaded into the hosts "Trusted Root Certificate Authorities" store.

Create an object

Objects such as channels or devices can be created either singularly or with children included.

Ex: Add Single channel

from kepconfig.connectivity import channel

channel_data = {"common.ALLTYPES_NAME": "Channel1","servermain.MULTIPLE_TYPES_DEVICE_DRIVER": "Simulator"}
result = channel.add_channel(server,channel_data)

Ex: Add Multiple tags

from kepconfig.connectivity import tag

tag_info = [
    {
            "common.ALLTYPES_NAME": "Temp",
            "servermain.TAG_ADDRESS": "R0"
    },
    {
            "common.ALLTYPES_NAME": "Temp2",
            "servermain.TAG_ADDRESS": "R1"
    }
]
tag_path = '{}.{}.{}'.format(ch_name, dev_name, tag_group_path)
result = tag.add_tag(server, tag_path, tag_info)

Need More Information

Visit:

• Kepware.com
• PTC.com