8. Series 8 I/O
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8.6. Setting Priority IOMs
236
Series 8 I/O User's Guide
R500
Honeywell
April 2017
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
Action
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.