Rockwell Automation T80004 Application Note Field Loop Configuration - Manual (Page 14)

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AN-T80004 Field Loop Configuration
Issue 10 Jun 13 AN-T80004 14
Threshold online update
The channel thresholds can be read or written using the THRSHOUT and THRSHIN boards in the I/O
connection table, through the Toolset Debugger’s online view. The thresholds are shown in raw units,
at the same scaling as the AI board (0 = 4mA or 1V, 4096 = 20mA or 5V).
To read a channel’s thresholds, enter the channel number on THRSHOUT channel 3, then change
THRSHOUT channel 2 from 0 to 1. The thresholds will appear on the THRSHIN board. In the example
below, the thresholds for channel 10 have been requested.
To write new thresholds to a channel, enter the new thresholds on channels 4 to 11 of THRSHOUT.
Enter the channel number on channel 3 of THRSHOUT, then change THRSHOUT channel 1 from 0 to
1. In the example below left, new thresholds for channel 13 are been loaded. On also setting channel 2
to 1, the thresholds are confirmed on the THRSHIN board on the right.
The manual processes described above could also be automated through the application.
Having changed the thresholds online, remember to update the system INI configuration template and
load it into the system. This will ensure that the changes are loaded on the next black start. The online
changes are not saved in the processor’s copy of the INI file.