![]() Service Pack 1 for STEP 7 V5.5 and STEP 7 Professi.Then right click on button and select View Code. Together we need 2 buttons and table like on this picture below. If you cannot find Command Button go to excel options and add it to your toolbar. Remember you topic name (mine is OFFICE) as you need it later to enter in our VB code in Excel. Right click on your processor and select Configure New DDE/OPC Topic. When tags are ready we have to open RSLinx software and create DDE/OPC topic. Create tags ORDER as DINT and TEMPERATURE as REAL. For testing purposes you can enter any values too. Tags ORDER and TEMPERATURE have already some values. ![]() I am going to use 2 tags from our last article about PLC Ladder Logic programming. ![]() I have RsLinx Classic ( no Lite – Lite edition does not support DDE ) and of course Microsoft Excel 2007.įirst we need to open our RSLogix5000 project and create global tags (controller tags). ![]() In this example I am going to use Allen Bradley CompactLogix PLC 1769-元5E. If you have Microsoft Excel you can read and write data from Allen Bradley PLC ( CompactLogix or ControlLogix processor) using the DDE/ OPC capabilities of RSLinx.
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