KM SVS2000, Installation & Operation Manual, Page: 76 / 89

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97-1129-01 Rev. D
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note Command Send Format Send Example Receive Format Receive Example
1
‘#’ - km Product Identification
number
>aa#ssr >01#84r Addssr A4064r
2 ‘W’ - Engineering Units (gross) >aaWssr >01WB8r A±dddddddssr A+000710386r
3 ‘B’ - engineering units (net) >aaBssr >01BA3r A±dddddddssr A-000446691r
4 ‘T’ - Tare Addressed Vessel >aaTssr >01TB5r Ar Ar
5 ‘u1’ - Request Raw Counts >aau1ssr >01u107r Adddddddssr A114722667r
notes:
1. The master requests the code from an SVS 2000 at address 01, which returns a code of 40 and a checksum
of 64.
2. The master requests the gross weight from an SVS 2000 at address 01, which returns a gross weight of
+7103 and a checksum of 86.
3. The master requests the net weight from an SVS 2000 at address 01, which returns a net weight of
-4466 and a checksum of 91.
4. The master requests the tare for an SVS 2000 at address 01.
5. The master requests the raw counts from an SVS 2000 at address 01, which returns a raw count of
1147226 and a checksum of 67.
calculaTIon oF Manual calIBraTIon paraMeTerS
For manual calibration, you calculate and directly input the scale factor weight, scale factor counts, and the zero
counts. There are three reasons for performing a manual calibration with the SvS 2000:
1. refining the Calibration — After performing an Auto calibration, you kept an accurate record of actual
material weight and indicated material weight. you want to use this information now to ‘refine’ the
calibration.
2. Stainless Steel, Aluminum, or 2-inch microcells — your application is for microcells installed on stainless
steel or aluminum or uses 2-inch Microcells. However, the calibration parameters resulting from Quick
Config are based on 3-inch microcells installed on carbon steel. The scale factor counts (Scale Factor
Cts) should be modified to reflect the actual sensitivity of the application.
3. re-entering Calibration Data — you want to re-enter data from a previous calibration that provided
better accuracy than the current calibration. This section explains and provides an example of the
calculation of Manual Cal parameters for items 1 and 2 above.
reFInIng The calIBraTIon
While moving material into the vessel, you kept an accurate record of the actual material weight and the
indicated material weight (from the SvS 2000). now you want to use this information to refine the calibration.
Follow this procedure to refine the calibration:
1. Define the recorded material weights as Indicated High Load, Indicated Low Load, Actual High Load,
and Actual Low Load (Actual Low Load is 0, because you started with an empty vessel). Calculate the
change in indicated and actual weight:
IW = Change in Indicated Weight = Indicated High Load - Indicated Low Load
AW = Change in Actual Weight = Actual High Load - Actual Low Load