Honeywell Experion PKS User Manual page 117

DPV0 Bus Cycle time
The number of DSBs and their PDCs configured in a link decide the DPV0 cycle time. If the DPV0 cycle time
is high, then the number of DPV1 request processed per second decreases because PGM limits the number of
DPV1 requests handled at the end of every bus cycle.
IOM's internal HART scan
If the slaves have internal HART scan enabled in their HART IOMs, then the response to HOP requests is slow.
Therefore, you must verify whether the slaves have internal HART scan is enabled while configuring the slaves.
Attention
IOM internal scan of the HART devices can be disabled by following a method that is provided by the salve. For
example, the slave methods are FDT settings, DPV1 write, through DTM form FDM, and so on.
7 DEVICE SUPPORT BLOCK (DSB)
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