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Section Four
Dual Scale Operation
Dual platform, or dual scale, operations yield excellent counting accuracy for large
counts using small sample sizes. It involves connecting two Setra scales together,
sampling on one scale, and bulk counting on the other. The lighter capacity scale
calculates the average piece weight using a very small sample size. (The accuracy
of the average piece weight determines the accuracy of the count.) Loading the
average piece weight from the sampling scale to the bulk counting scale will
automatically allow the bulk scale to achieve a more accurate count.
Any combination of model C and CP scales can be paired together. Both scales may
function independently of each other — even when connected.
Note: Dual Scale Operation which involves two Setra scales should not be confused
with the Remote Scale Option which allows the use of analog output bases with
Setra CP or Super Count
™
models.
INSTALLING A DUAL SCALE SYSTEM
Three items comprise a dual scale system: a sampling scale, a bulk counting scale,
and an interface cable. The connectors and interface cable are available from Setra.
Prior to connecting the sampling scale and the bulk counting scale, perform the
following set up procedure on the sampling scale (smaller capacity) only.
1. Press the — key.
2. Enter 6666 .
3. Press the setup/cal key. The display will read "CAL dP".
4. Press the setup/cal key. The display will read "APW, 1 or 0".
5. Enter 1 to set up the scale for dual scale use ; enter 0 to reset the scale to normal
operation.
6. Press the setup/cal key.
7. Connect the two scales together using a cable wired for dual scale operation.
In order to ensure proper operation, it is necessary to make certain that both scales
are operating at the recommended baud rate of 2400. If necessary, change each
scale’s baud rate following the procedure in Appendix II, "Formatting Baud Rate".
Dual scale systems may be used in conjunction with either a printer or the Setra Auto
Count
™
200 bar code system. Make certain that all devices are operating at the same
baud rate. (The Setra 240P printer operates at 2400 baud.) When using a printer, the
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