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Posted
Dear All, I'm Adi Sukma Hadinata. I have problem to configure addressing for Melsec FX3U connect witch Special Adapter and Expansion Module, especially for Analog Input/Output. This my first time used analog I/O module. My Configuration : Main Unit : FX3U-48MR-ES-A Special Adapter : FX3U-3A-ADP Expansion Board for special Adapter : FX3U-CNV-DB Expansion Module #1 : FX2N-8EX Expansion Module #2 : FX2N-4DA Expansion Module #3 : FX2N-4DA Expansion Module #4 : FX2N-8AD Software Used : GX Developer V8.63R At attachment i was drawing the configuration. My Question : 1. It's my drawing and addressing at attachment for DI and DO already Okey ? 2. What is address channel for AI and AO base on the drawing ? 3. How to setting parameter at GX Developer to connect Main unit with special adapter and expansion module ? Thank you, Regards, Adi Sukma Hadinata CONFIGURATION MELSEC FX3U.pdf
Posted
Hi, welcome to the forum The analog units are special blocks and are configured and interrogated via buffer memories using the TO and FROM instructions The special blocks are numbered from the right of the main unit. Main Unit : FX3U-48MR-ES-A Special Adapter : FX3U-3A-ADP...................No. 1 Expansion Board for special Adapter : FX3U-CNV-DB Expansion Module #1 : FX2N-8EX Expansion Module #2 : FX2N-4DA...............No. 2 Expansion Module #3 : FX2N-4DA...............No. 3 Expansion Module #4 : FX2N-8AD...............No. 4 I have attached a user guide Hope this helps Steve 067759.pdf
Posted
ERROR: FX3U-3A-ADP goes on the LEFT side of the CPU, and has automaticallly allocated addresses of M8260-8269 and D8260-8269. Your special module numbers on the right all off. First analog output module is 0, then the next is 1, and the 8AD is 2.
Posted
Dear Crossbow, thank's for your correction. So that means the hardware position from left to right will be : FX3U-3A-ADP FX3U-CNV-BD FX3U-48MR-ES-A FX2N-8EX FX2N-4DA FX2N-4DA FX2N-8AD And what is you means about "yout special module number on the right all off" ? It's that means module at the right main unit can't work ? Thank's
Posted
What I mean is the special module numbers on the right start at 0 and go up to 7. This is covered in the FX programming manuals. Please read about the TO and FROM instructions to understand how to communicate with the special modules. Also, every manual for the modules you mention has programming examples right in the manual. Open the manual for the FX2N-4DA and you will see a programming example.
Posted
I already read the manual, also about TO and FROM Instruction. You say that SFM number on the right main unit start from 0 to 7. That means at my configuration hardware will be : FX3U-3A-ADP FX3U-CNV-BD FX3U-48MR-ES-A FX2N-8EX -------- SFM 0 FX2N-4DA ------- SFM 1 FX2N-4DA -------- SFM 2 FX2N-8AD -------- SFM 3 So, if i want to Read Data from FX2N-8AD for Ch. 1 to Ch. 8, the instruction will be : [ FROM K3 K10 D0 K8 ] Please correction if i was wrong. Thank's
Posted
NO! FX2N-8EX is discrete inputs. That is not a special function module. Only special function modules are accessed with TO/FROM. The 8EX is assigned your next 8 input addresses, which would be X30-X37. As I said in my last post, your first FX2N-4DA is 0, then the second is 1, then the FX2N-8AD is 2.

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