Substituting every period scan in EPICS MODBUS by I/O Interrupt

["Marco A. Barra Montevechi Filho via Tech-talk" <tech-talk at aps.anl.gov>]

Good evening for all.

I was reading the EPICS MODBUS documentation after realising that i had misspelled a SCAN field in my modbus application and came across the following:

> modbus supports pseudo-interrupt mode on inputs. The poller thread calls device support when there is a new value, so the EPICS records can have >SCAN=I/O Intr and do not need to periodically read the inputs. This is more efficient.

Does this mean that, whatever the modbus device is that i am communicating, i can always substitute my 'field(SCAN, "1 Second")' to 'field(SCAN, "I/O Intr")' and go out unpunished? Will this work against me in the future?

Thanks for any tips.

Marco.

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