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This macro assumes that there is a worksheet created and saved as RSLINX.xls and with sheet DDE_Sheet . Reading data from a PLC via DDE requires a macro like the following. Using Macros (as contained in the RS Linx Online reference): This can be done in two ways using a DDE link and using Macros.Ħ. Using direct DDE link to import data to Excel. Select a cell in Excel sheet and enter the following formula:ħ. We need to start MS Excel and tell it what the topic is and we are set. We are now ready to start a DDE communication. Open the Properties of the Data Collector. Then associate this topic with the PLC by clicking on the PLC name on the Data Source tab of the same window then click apply.ĥ. If RSLinx is not the Lite version, there are changes in the OPC Data Logger configuration that can allow for a connection. To do this, go to DDE/OPC>Topic Configuration. You will need to configure a topic in RSLinx. Before you proceed, check to make sure that the PLC is online. RSLinx Classic is not as robust but can support more features via an OPC connection.
Rslinx classic lite opc license#
This means that if a user purchases a license for RSLinx OEM, Standard. To do this, in RSLinx click on Communications>Configure Drivers>Ethernet Devices. FactoryTalk Gateway is the more robust data server in terms of how many tags it can support and its ability to reconnect to controllers/clients. RSLinx includes OPC Server functionality in all versions except RSLinx Lite.
Rslinx classic lite opc drivers#
Simply go to Control Panel>Administrative Tools>Services and enable Network DDE and Network DDE DSDMĢ. Open up RSLinx and configure the drivers so that the PLC can be seen online. You can use it instead of RSLinx and these are the supported devices: ControlLogix 5500 connected through 1756-ENET/A, 1756-ENET/B or 1756-EN2T. Enable DDE communication in the computer. Ignition OPC-UA has a limited number of drivers for Allen-Bradley devices. Ensure that the PLC and the computer are connected to the Ethernet. Here are the steps required to achieve this goal:ġ. DDE can be used to exchange data between two programs. 3 - Only used for legacy features not supported by RSLinx Enterprise. The data contained in the PLC resgisters can be imported to Excel using Dynamic Data Exchange (DDE). 2 - Available in RSLinx Classic Lite v2.53 or later. It can help you diagnose typos in tags and topic names.For an industrial engineer, sometimes there arises a need to import process data to a computer for manipulation. Then use the DDE client diagnostics within the RSLinx menu "DDE/OPC" to check for errors when running excel to read tags. This version does not support OPC, DDE, or the published RSLinx Classic C API (Application Programming Interface). You can also browse the topic to verify it is set up correctly, which is what excel uses through DDE. This allows you to verify linx can talk to the PLC when browsing PLC tags directly. To troubleshoot, try reading the target tags manually using the OPC Test Client that comes with RSLinx (shortcut in start menu).
Rslinx classic lite opc windows#
Windows firewall can block linx from talking to the PLC.Excel sometimes fails to start RSLinx if it is not running.Have you verified that you have the topic configured within Linx?.If you don't have a Linx license installed, Linx will run as Lite which does not support DDE.For each tag, it will hang until it times out, and then move onto the next tag, which can cause excel to become unresponsive. If it works on your coworker's computers, it is likely an issue with something causing excel top fail to read using RSLinx.