Hardy 1734-WS Installation & Operation Manual
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Hard Calibration
Hard Calibration is the traditional method of calibration that uses test weights. Hardy recommends that the test
weights total 80 to 100% of the scale capacity.
Step 1
Place the low calibration ref weight (the weight can be zero) on the scale
Step 2
Send a Cal Low Command (CALLOW- CMD)
The Cal Low Command - sets the “calLowCount” parameter to the current A/D average
counts when doing a hard calibration.
Step 3
If you used a weight remove it from the scale
Step 4
Place the high (Span) calibration weight on the scale
Step 5
Send a Cal High Command (CAL- HIGHCMD)
The Cal High Command - Sets the Span Weight parameter to the current A/D
average counts when doing Hard CAL
Step 6
Remove the weight from the scale
Hard Calibration Using Ladder Logic
Step 1
Check to be sure that the parameters have been setup for your weighing process. (See
Chapter 4, Setup)
Step 2
We have provided a Ladder Logic example explaining how to set the weigh process
parameters. The Ladder Logic example is meant to provide a ladder logic model only. Your
application may vary and the example may or may not meet your requirements.
Step 3
The Ladder Logix example is available on the Hardy Process solutions Web Site:
http://www.hardysolutions.com
Navigate to Products> PLC Weighing Modules > Weight
Modules> HI 1734-WS Weigh Scale Module > Docs & Programs.
