SIA Connect Knowledge Base

David Nyhedegaard Pedersen

dnp@sia-connect.com

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Serial Connections

Published May 28th, 2026 by David Nyhedegaard Pedersen

This section describes the wiring and the functionality for terminals used for serial communication Terminal number Description 3 RS232 Transmit (not isolated) 4 RS232 Receive (not isolated) 5 RS232 Ground (not isolated) 6 RS485 Channel A / D- (not isolated) 7 RS485 Channel B / D+ (not isolated) 8 RS485 Ground (not isolated)

Configuring an OPC-UA server

Published September 4th, 2025 by David Nyhedegaard Pedersen

Overview This tutorial will guide you through how to set up a connection between a generic instance such as a PLC and how to expose the data from the instance on an OPC-UA server through SIA Connect. This example will show how to configure a OPC-UA server for a Mitsubishi MELSEC PLC. OPC-UA server for 30+ industrial protocols SIA Connect can be c

Exchanging PLC data with MS SQL servers

Published September 2nd, 2025 by David Nyhedegaard Pedersen

Overview This tutorial will guide you through how to connect to an MS SQL server on your SIA Connect, how to exchange data between instances such as PLCs and with the MS SQL server.In this tutorial we will show how to exchange data from a Allen-Bradley PLC and a MS SQL server. Exchange data between any PLC and MS SQL servers SIA Connect can be con

Accessing the logs

Published November 4th, 2025 by David Nyhedegaard Pedersen

Sometimes it can be useful to see the logs from SIA Connect, this is especially helpful when in debug mode. The logs help verify that data is being transferred correctly and can assist in identifying issues during troubleshooting. The siacore.log file is often requested by our support team, as it provides key insights into system behavior and helps

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