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Breman

Logo soft programming problem

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Ok all you geniuses out there,

Please help a fellow out here.

 

Certainly a small problem (or none) for most of you, but for novis, a setback..

 

Installation:

a small, 3 level cargo-carrier up a hill.

 

One electric motor, two contactors (one for each direction of motor)

 

2 sensors per level (one extra for security) - Inductive

 

I have made the program, Ladder and FBD, in Siemens Logo software (the PLC is Logo).

 

The issue is when the “call-button” at the middle level is pushed, I can not implement in the program, that sensing if the “wagon” is up or down, which contactor to use, and using the sensors in the middle to stop.

 

I’m stuck.. 

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