mitsubishi FX2s shift register problem, bytronic

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Join Date
Apr 2012
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hi all, im having a problem programming the bytronic itc1. It regards pointer register and data registers. The information i have is as follows; the data retrieved from the component passing the inductive sensor is loaded into the first element of shift register M30, when component passes through the beam sensor, both inductive sensor pointer (M20) and data (M30) shift registers are shifted left by by 1 bit.
M20 has been designated as an inductive sensor pointer and is initialised with an 'ON' state in auxiliary relay M20.
The ladder diagram i came up with is as follows, if anyone could help me with this you will be of legendary status.

M8000-----------------------------(M20)
X1--------------------------------[PLS M0]
M0--------------------------------[SFTLP X1 M30 K4 K1]
X2--------------------------------[PLS M1]
M1--------------------------------[SFTLP X2 M20 K4 K1]
|-------------[SFTLP X1 M30 K4 K1]
Has anyone any experience in this matter or am i on the right track? Plus M20 AND M30 need to be logically 'AND'
 

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