https://forge.codesys.com/forge/talk/Engineering/thread/37e9cb268f/2022-07-22T19:24:17.831000ZRecent posts to Codesys "Write Values" & "Write Recipe" Fails On Modbus Mapped Variables2022-07-22T19:24:17.831000Z2022-07-22T19:24:17.831000Zrckalexhttps://forge.codesys.com/u/rckalex/https://forge.codesys.com0232e625d5c41b3860c7df2a9b8253c5a52612f0

<div class="markdown_content"><p>Device Tested: Codesys Control Win V3 x64 (3.5.18.0)<br/> Codesys Version: 3.5 SP18 64bit<br/> Configuration:<br/> Codesys is acting as a Modbus Slave (ModbusTCP Slave Device).<br/> General Configured Parameters:<br/> Holding Registers: 10 (%QW) Writeable<br/> Input Registers: 10 (%QW)<br/> Coils: 0<br/> Discrete Inputs: 0<br/> Data Model: 0/0/0/0<br/> In a global variables list I declared the following:</p> <div class="codehilite"><pre><span></span><span class="err">UI_Word_1 AT %QW0 : WORD;</span> <span class="err">UI_Word_2 AT %QW1 : WORD;</span> <span class="err">UI_Word_3 AT %QW2 : WORD;</span> </pre></div> <p>Behavior:<br/> Unable to use the "Write Values" function in the Debug menu to set the value of variable mapped to the Modbus TCP Slave from Codesys. I am able to successfully write to the variable from within the logic. I am able to successfully force the value. After releasing the force, the forced value is retained.</p> <p>Unable to use the "Write Recipe" function to update mapped variables.</p></div>