Hardy H6800 Series Application Controllers User Guide
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APPENDIX A - I/O SETUP
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I/O Monitoring
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Setpoints
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I/O Configuration and Mapping
This appendix provides information related to the set-up and use of on-board instrument I/O
to allow the set up certain monitoring and control activities to meet process requirements.
A.1 I/O Monitoring
Monitoring of main-board I/O state changes can be found on the home screen of the
instrument, in the Digital IO screen of the instrument’s display or via the embedded
webserver.
Alternatively, navigate to the Digital I/O screen of the instrument or to Setup/ IO Setup/ IO
Monitor using a web browser to view the status main-board Inputs and Outputs, or to
manually trigger a state-change of an Output.
Monitoring of option card I/O state changes are found in the Option Card screen(s) of the
instrument or via the embedded webserver.
Alternatively, navigate to the Optional I/O screen of the instrument or to Setup/ Options of
the browser and select the Option Card to view the status Inputs and Outputs, or to manually
trigger a state-change of an Output.
A.2 Set Points
A set point value is a threshold weight or level based on the Unit (of Measure) that is
selected during system configuration. It may be set in either Net, Gross or in ROC weight
units when the option is present. This section describes the attributes used to assign a
setpoint during setup configuration.
Parameters:
Deadband Limit, Preact Limit, and Type
The Deadband limit is the difference between the set point and the reset. It is used to
prevent rapidly fluctuating setpoint states once the set point is reached. For example, with a
set point value of 1000 pounds and a deadband set to 5 pounds, the relay would close at
1000 pounds but not open until the weight dropped to 995 pounds.
