Posted 30 Sep 2019 (edited) Hello Colleagues. I have to develop some PLC program for GE Rx3i. I'm a little bit confused with PME function block. As i understand parametrized block in PME it's Function at Siemens, Mitsubishi and others PLC's brands and it cannot use data memory inside. Classic FB in PME has 4 type for inputs Reference, Constant Reference, Value, Value Result. When i need use this types of input? As i understand analogy between PME and for example step7 or gx works: - "Value" - input variable - "Reference" - Input/output variable But i don't understand how use "constant reference" and "value result". Explanation of it in has help, but don't provided any examples. PME doesn’t provide any PLC simulators and i don't have real PLC, so can't test it in work. Second question about UDT variables. I created UDT type for example for sensor, then created variable based on this UDT, but i can't set reference address for this variable. how put this variable to Scada or HMI without addresses? Edited 30 Sep 2019 by Clear.Mind 1 person likes this Share this post Link to post Share on other sites