How to calibrate a HI 1769WS PLC module?

How do I calibrate my HI 1769WS or HI 1769-2WS PLC module? Unfortunately I do not have Hardy C2® load cells so I cannot perform a C2® calibration.

Complete calibration information is contained in chapter 5 of the HI 1769WS manual, which can be found on the Docs and Programs page of the HI 1769 Module products page.

The five steps that must be performed to complete a non-C2® calibration on your Hardy HI 1769WS or HI 1769-2WS module are:

1. Do the Metric routine
2. Do the WriteParam0 routine
3. Do the WriteParam1 routine
4. Do the Cal Low routine
5. Do the Cal High routine.

NOTE:  There are two methods of installing the HI 1769 WS modules in the I/O configuration when using the CompactLogix processor.  You can add the module to the configuration using the AOP (Add on Profile) or install as a generic module.
If you install the module using the AOP, you will have the oportunity to set your Metric setting parameter as well as all the parameters included in the WriteParam0 and WriteParam1 routines.  This would allow you to skip steps 1-3 and start with step 4 the Cal Low routine.

If you are installed in the MicroLogix 1500 system, you would need to follow all the steps for the traditional (hard) calibration.

Explanation:

1. The metric setting is a parameter in the module that designates how the data will be formatted. This setting consists of one 16 bit word location with 3 fields defined fields within the word.
2. 1. The first field is bit #7. If this bit is set to "0", then the unit will treat the weights in lbs. If this bit is set to "1", then the unit will treat the weights in Kg.
   2. The next field is bit #6. If this bit is set to "0", then the unit will treat the weights and parameter value as integer formatted values. If this bit is set to "1", the unit will treat the weights and parameters in IEEE floating point formatted data.
   3. The next field is bits #0, 1, & 2. This field is only considered if bit #6 is set to "0". Then the binary value for bits 0-2 determines the number of decimal place resolution the unit will use.
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