Rockwell Automation 2755 Enhanced Decoder Series B - Manual (Page 109)

7–21 Configuration: Scanner Control, Primary Match Table, Discrete I/O
Publication 2755-833
2. AutoLoads Multiple Packages Loads multiple
packages into the match code table as long as
AutoLoad (INPUT) is held active. If the number of
outputs configured for AutoLoad exceeds the
Symbols/Package setting, multiple packages can be
loaded until all table entries are filled. Do not use in
Continuous Decode mode unless your intention is to
load multiple versions of the same package.
When Output 8 is configured for AutoLoad
(INPUT), the decoder will not load data into entry 8
of the match table.
AutoLoad (INPUT) is useful in product verification
applications, where you need to load new match
codes into the decoder regularly or when multiple
packages must be used to fill the table. A switch or
push button can be used to enter new product label
data in the match code table.
Output Duration
Field Type Options
Edit
10 to 9999
0
Specifies the length of time (in milliseconds) that an output is
activated. Enter a value between 10 and 9999.
➀ The default of 0
disables the timer.
Important: The pulsed outputs will not operate unless you specify
an output duration.
The LED indicator for an output lights only when the output is in its
closed state. Therefore, the LED for a normally open output lights
when the output is closed. The LED for a normally closed output
lights when the output is in its closed state and turns off when the
output is opened.
➀ ATTENTION: Set output durations in multiples of 5 milliseconds. Actual output will have a worst-case precision
of +0 to –5 milliseconds, varying with the timing of the output. Durations that are not set in multiples of 5
milliseconds will be rounded up to the nearest multiple of 5 and function within the same +0 to –5 millisecond
precision.
For example, a setting of 25 milliseconds will result in a duration of from 20 to 25 milliseconds. A setting of 23
milliseconds will result in the same duration range.