[?]: convert Gray code to binary code using ladder diagram

[ahmed yousri]

can i convert Gray code to binary code using ladder diagram ,
if there is document pls uploaded it

http://en.wikipedia.org/wiki/Gray_code

Here is an algorithm to convert Gray code to natural binary codes (decode):
C function

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unsigned int graydecode(unsigned int gray) {
   unsigned int bin;
   for (bin = 0; gray; gray >>= 1) {
     bin ^= gray;
   }
   return bin;
 }

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Let G[n:0] be the input array of bits in Gray code
 Let B[n:0] be the output array of bits in the usual binary representation
   B[n] = G[n]
   for i = n-1 downto 0
     B[i] = B[i+1] XOR G[i]

3-bit Grey code

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Dec  Gray   Binary
 0   000    000
 1   001    001
 2   011    010
 3   010    011
 4   110    100
 5   111    101
 6   101    110
 7   100    111

[Schtiel]

can i convert Gray code to binary code using ladder diagram

of course yes, for what PLC do you need the program?

[Олег]

GRAY CODE CONVERSION (GRY(474)) for Easy Conversion of Parallel Inputs from Absolute Encoders
to Binary, BCD, or Angle Data
This instruction converts Gray binary codes to binary, BCD, or angle data.
This enables easily handling position or angle data input as parallel signals
(2n) from an Absolute Encoder with a Gray code output using a DC Input Unit.

[ahmed yousri]

plc type "omron"

[Info]

gray code to decimaly this XOR command
see S7 STL code
L0.2 - L0.7 this no use bits (encoder 10 bits)

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      L     #IN0              // IW encoder
      T     #encod_gray_dec   // LW0
      SET   
      R     L      0.7
      R     L      0.6
      R     L      0.5
      R     L      0.4
      R     L      0.3
      R     L      0.2

      AN    L      0.1
      JC    M003
      AN    L      0.0
      =     L      0.0
M003: AN    L      0.0
      JC    M004
      AN    L      1.7
      =     L      1.7
M004: AN    L      1.7
      JC    M005
      AN    L      1.6
      =     L      1.6
M005: AN    L      1.6
      JC    M006
      AN    L      1.5
      =     L      1.5
M006: AN    L      1.5
      JC    M007
      AN    L      1.4
      =     L      1.4
M007: AN    L      1.4
      JC    M008
      AN    L      1.3
      =     L      1.3
M008: AN    L      1.3
      JC    M009
      AN    L      1.2
      =     L      1.2
M009: AN    L      1.2
      JC    M010
      AN    L      1.1
      =     L      1.1
M010: AN    L      1.1
      JC    M011
      AN    L      1.0
      =     L      1.0
M011: NOP   0
      L     #encod_gray_dec
      T     #OUT1             //decimaly out encoder

[Scarch]

Thanks sania, I will try it soon.