How to write code to read Digital input from Handshake signals

CODESYS
,
1

Hi all,
in my task, I am responsible to read the position of a moving sensor that I have currently. There are 15 total positions that the sensor will move to. Variable Y02, Y03, Y04 and Y05 will determine the position of the sensor.

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For example at position 2, the value for
Y02 = 0
Y03 = 1
Y04 = 0
Y05 = 0
The binary bit will be 0100. Every position has its own binary bit. How do I make program for the PLC to save that, when the binary is at 0100, it is at Position 2. Thank you in advance.

Best regards,
Umair

2

You can use the simple operator “.”, for instance wToto.2 is a boolean variable that reflect the state of the third bit of wToto.
In the util.lib you will find also useful bit/byte functions.
You can use EXTRACT function to select a specific bit of a BYTE or WORD.
You can also use WORD_AS_BIT to extract necessary bit of a WORD.