Setting Priority Ioms - Honeywell Series 8 I/O User Manual

8. Series 8 I/O Loading

8.6. Setting Priority IOMs


The IOM's Execution State is RUN and the IOC block's Point Execution State is
ACTIVE.
8.6 Setting Priority IOMs
To improve control loop latency in Series 8 I/O Modules, there is an optional selection
that supports the IO Link interface and Control Execution Environment (CEE) in the
C300 Controller. The Priority IOM option is available for:

all standard Series 8 IOMs supported by the C300 Controller and IO Link interface,

except for the TC/RTD
A Priority IOM is designated or configured through the IOM Function Block Form using
the modules I/O Link Scan Rate selection. This option applies to all the channels of the
IOM. The IOM is added to a list of modules which appear on the associated IOLINK
configuration form.
A parameter (NUMPRIORITYIOM - Priority IOMs) on the IOLINK Function Block
form (Main Tab) shows the number of configured IOMs with this attribute activated.
To set the Priority IOM, perform the following steps.
Step
1
Double-click the I/O Module in Control Builder tree view.
The Main tab appears.
2
From I/O Link Scan Rate, select Priority_IOM
3
This completes this task.
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Action
Series 8 I/O User's Guide
Honeywell
R500
April 2017