Rice Lake iQUBE2 Digital Diagnostic Junction Box - Manual (Page 54)

50 iQUBE 2 Installation Manual
Cell Underload Error, <D> = U
The underloaded cell diagnostic flag is set when the cell output falls below the percentage of full scale cell output
set for the scale.
Query Command Example:
DIA.UNDERLOAD
DIA.UNDERLOAD=SC1 10.0% 3:-2.236;
The cell underload query, DIA.UNDERLOAD, returns information including the affected scale number (SC1), the
cell underload threshold (10% of full-scale output), the affected cell number (3:), and the millivolts value of the
underload error (–2.236 mV).
Threshold Setting Command Example:
The cell underload threshold can be set using the SCs.DIA.UNDERLOAD command. Specify the percentage of
full-scale output that will trigger the underload error condition.
SC1.DIA.OVERLOAD=15
The example above sets the underload threshold for Scale 1 to 15% of full-scale output. The threshold can be set to
any value from –100 to +100 percent; the default value is 10 percent.
6.2.3 Scale Diagnostic Commands
Scale diagnostic commands are dependent on scale configuration and must be explicitly enabled for each scale.
Each of the scale diagnostic commands use two or three parameters to set the values used to trigger the associated
diagnostic flag.
Cell Mate Relationships
Cell mates to a given load cell are those cells that are adjacent to
the cell. In the platform illustration below, LC2 and LC3 are cell
mates to LC1; LC2, LC3, and LC6 are cell mates to LC4.
Zero Reference Error, <D> = R
The zero reference diagnostic flag is set when the output of any
cell in a stable scale falls outside the zero reference range config-
ured for the scale.
Query Command Example:
DIA.ZREF
DIA.ZREF=SC1 2.0% 4 3.2;
The zero reference query above, DIA.ZREF, returns information including the scale number (SC1), the value set as
the zero reference range (as a percentage of scale capacity), and the approximate weight value (3.2) returned for a
load cell (4) that exceeds the specified range.
Parameter Setting Commands Example:
SC1.DIA.ZREF=ON
Enables the zero reference diagnostic test for Scale 1.
SC1.DIA.ZREF.RANGE=4
Sets the range, as a percentage of scale capacity, of acceptable values for the zero reference diagnostic test to 4% of
scale capacity. (That is, the zero reference test will generate errors for weight values exceeding 4% of scale capac-
ity.) The default value is 2 (2%); allowed values are 0–100.
SC1.DIA.ZREF.THRESH=5
Sets the threshold for disabling the zero reference diagnostic test to 5% of scale capacity. (That is, the zero refer-
ence test is not run after the scale has reached 5% of capacity.) The default value is 10 (10%); allowed values are –
100 to 100.
SC1.DIA.ZREF.TIME=15
Sets the number of seconds to wait before running the zero reference test, after a cell exceeds the specified range
value, to 15 seconds. The default value is 10 (10 seconds); allowed values are 0–60 seconds.
LC 1 LC 5 LC 3
LC 2 LC 4 LC 6
Figure 6-1. Cell Mate Relationships