Yokogawa DCS programming


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any one please explain, in Yokogawa DCS when programming interlocks which is better Logic chart or Sequence table
Both ST and LC can do the job but for programming interlocks and for ease of troubleshooting later, using logic chart will be more appropriate.

Sequence table is best used for steps programming and please bear in mind that if you wish to use sequence table for interlocks programming, you must set the processing timing of the table to periodic scanning and always execute.

Hope this helps!