Leo

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About Leo

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    Hi, I am New!

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  • Country Portugal
  1. Sorry for my english I'm using the Modbus protocol to communicate two twidos TWDLCA24DRF one as master and one as slave. I'm having difficulty writing and reading while the slave. Below is the code I tried to run, I am able to write to the slave but I am not able to read from slave. This is very important for my studies. Please Help me. (* WRITE TO SLAVE *) LD 1 [ %MW0 := 16#010C ] [ %MW1 := 16#0007 ] [ %MW2 := 16#0110 ] [ %MW3 := 16#0010 ] [ %MW4 := 16#0002 ] [ %MW5 := 16#0004 ] [ %MW6 := 16#FFFF ] [ %MW7 := 16#ABCD ] LD 1 AND %MSG2.D [ EXCH2 %MW0:11 ] LD %MSG2.E ST %Q0.0 (* READ TO SLAVE *) LD 1 [ %MW12 := 16#0106 ] [ %MW13 := 16#0300 ] [ %MW14 := 16#0103 ] [ %MW15 := 16#000C ] [ %MW16 := 16#0004 ] LD 1 AND %MSG2.D [ EXCH2 %MW12:23 ] LD %MSG2.E [ EXCH2 %SW64:13 ] ST %Q0.1 END Please HELP ME.