Honeywell Series 8 I/O - IOMs designated as Priority

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8. Series 8 I/O Loading

8.6. Setting Priority IOMs

R500 Series 8 I/O User's Guide 237

April 2017 Honeywell

Figure 65 Setting Priority IOM

IOMs designated as Priority_IOM

 consume a relatively larger I/O Link bandwidth than other IOMs

 is given preference within the controller

 Input Process Data from these IOMs is fetched so that it is coordinated with control

execution and is triggered at a point that minimizes the latency between data fetch

and its use in control algorithms

 Data scanned from an output to a channel on an IOM with the Priority IOM on, is

expedited in its passage through the I/O Link interface

Honeywell Series 8 I/O - IOMs designated as Priority_IOM