dcstm

DCS and the Dual-Channel Family: Discrepancy Time, and the Two Faults With No Timer Behind Them

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A four-column table of the dual-channel instructions with what each is for, its discrepancy range and what it adds: DCS for a stop device at 5 to 3000 ms adding Restart Type and Cold Start Type; DCST the same plus a forced test; DCSTL the same plus a lock request and lock feedback; DCSTM the same plus muting; DCM for monitoring a cam or limit switch at 0 to 3000 ms, adding an Equivalent-Active Low input type and a zero that disables the check; DCSRT for a start device such as an enable pendant, with an Enable input and a window measured on the way in; and THRSe with a 100 to 3000 ms range that means something different again

DCS and the Dual-Channel Family: Discrepancy Time, and the Two Faults With No Timer Behind Them A DCS instruction reporting Fault Code 16#4002 has not had a discrepancy in the sense anybody means by the word. That code means Channel A went to the safe state and came back to the active state while Channel … Read more

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