Rice Lake CB-2 Concrete Batch Controller Version 1.0 - Manual (Page 7)

Introduction 3
1.2 Indicator Operations
The CB-2 does not allow the 920i to execute any of its standard operations like Gross/Net, Units, Print, Tare, and
Zero because they are not applicable to this application. In other words, the Gross/Net, Tare, Units, and Print
keys are disabled all the time. The Zero key is allowed at times during the loading process and while no load is
batching.
Zero Scale Process
Because the CB-2 always has two or more scales, the zeroing of the scale is a three-step process. Only the scale
that is selected can be zeroed. There are two ways to tell which scale is selected. First, the top weight widget will
show Scale #1 and display the current weight in/on scale #1 when scale # 1 is selected. It will show Scale #2 if
cement scale is selected and so on. Also, the selected scale # is displayed in the upper right hand corner of the
display.
Remember that the scale assignments will always be:
Aggregate Scale 1
Cement Scale 2
Water Scale 3
Example: To zero the cement scale;
1. Press the
Zero
key. If zeroing is not allowed at this time, you will be informed. If zeroing is allowed, the
message “
Up/Down nav keys are enabled
” is displayed.
2. Press the
down
arrow key until scale 2 (the cement scale) is shown in the top weight widget and in the
upper righthand corner of the display.
3. Press the
zero
key again. If the 920i allows the zero command, then the selected scale (scale 2, the
cement scale), should now read zero. The CB-2 automatically puts the aggregate scale (scale #1) back in
the top widget and redraws the text AGG, CEM, next to the appropriate weight widgets.