Iom Configuration Values Not Copied During Block Copy Operation; Sequence Of Events Scenarios; Input Chatter Scenario - Honeywell Series 8 I/O User Manual

7. Series 8 I/O Operations

7.7. IOM configuration values not copied during Block Copy operation

7.7 IOM configuration values not copied during Block
Copy operation
The following subset of the IOM configuration parameter values are not copied during a
Block Copy operation.
Uncopied IOM configuration parameters during a Block Copy
IOLINKNAME
7.8

Sequence of Events Scenarios

Input chatter scenario

The DEBOUNCE parameter specifies the minimum time input remaining at a new state,
thus creating a PV change. This timer prevents the "nuisance PV change events" by not
creating the events until the input settle.
This parameter:

may be set from 1msec intervals up to 50 msec

with zero msec indicating no debounce (all transitions logged)
Note: Inputs are sampled every msec. In the figure below, points A, B, C, D, E, and F are
identified to illustrate the behavior of the IOM at that point of time.
Input chatter scenario - considerations

DEBOUNCE parameter is set to 4ms.

The previous valid event is with PV = LOW.

Input is scanned every 1msec.
Point
218
IOLINKNUM IOMNUM
Sequence of Events input chatter scenario
Typical action
Series 8 I/O User's Guide
Honeywell
CHNLNAME
R500
April 2017