Hardy Instruments A Series - Hard Calibration Ladder Logic Example

Chapter 5 - Calibration
5-7
• For more information on the Cal Low
Command go to Chapter 4, Setup,
page 4-11.
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.
• Command Number: 0x65 (Hexadeci-
mal)
• Channel Number: 0 or 1
• Number of Elements: 8
• For more information on the Cal High
Command go to Chapter 4, Setup,
page 4-12.
Step 6. Remove the weight from the scale.
Step 7. Send a Write Non-Volatile Command
(WRITENONVOLATILE).
• The Write Non-Volatile Command -
causes all parameters (including cali
-
bration constants) to be saved to the
non-volatile memory.
• Command Number: 4 (Hexadecimal)
• Channel Number: 0 or 1
• Number of Elements: 8
Hard Calibration
Ladder Logic
Example
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