why the SCAN time of DCS is more & that of PLC is less?
if the SCAN time of DCS then why we use DCS.
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Answer Posted / kyle condran
DCS are not PC based. the configuration and operating software are but the actual control happens in a control module. DCS usually have a fixed scan time 50ms+, but not always, regardless of I/O count or program size.
PLC scan time depends on Program size and I/O used in the program.
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