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Zamora posted a topic in MitsubishiGood day everybody, Currently I am working on an application using 3-axis controlled by a QD77MS4 Simple Motion Module. In this case, I have already set up most of the configuration, but when I try to execute the program, I get the following error: SP. UNIT ERROR - The location designated by the FROM/TO instruction set is not the intelligent function module/special function module. - The module that does not include buffer memory has been specified by the FROM/TO instruction. - The intelligent function module/special function module, Network module being accessed is faulty. - Station not loaded was specified using the instruction whose target was the CPU share memory. The QD77MS4 Module is mounted in Base Slot #3, so I use U2\G800, U2\G1500, etc... to Read/Write from it. The Diagnostics tool indicates the error occurs as soon as I try to access the U2\G800 Buffer Memory. If I set this part of the program to No Execution the error is no longer displayed. Additionally, if I try to monito the Buffer Memory area of the Module, it says that "The Module Stat Address is incorrect". I already tried changing the position of the module in the base (Slot 3 --> Slot 1) and changing the corresponding values to reflect that, but still the problem persists. What am I doing wrong? Is there some kind of configuration I could be missing? Thanks in advance for your help!