Rice Lake iQUBE2 Digital Diagnostic Junction Box - Manual (Page 53)

Diagnostics 49
Use the DIA.PS query command to retrieve diagnostic information for P-type error conditions.
Query Command Example:
DIA.PS
DIA.PS=SC2; SC3;
The iQUBE 2 responds to the DIA.PS query command with SC2; SC3, indicating that the board affected by the
power supply error is common to both Scale 2 (SC2) and Scale 3.
Secondary Communication Error, <D> = S
The secondary communication diagnostic flag is set when any configured secondary CPU board loses communica-
tion with the primary CPU board.
Query Command Example:
DIA.MSCONNECT
DIA.MSCONNECT=S1 121A295A;
The query response indicates that the first secondary unit ( S1 ), with board ID 121A295A, has lost connection to the
primary unit.
Excitation Voltage Error, <D> = E
The excitation diagnostic flag is set when any CPU board in the system has an excitation voltage fault (excitation
voltage below 4.9 VDC).
Query Command Example:
DIA.PSEXC
DIA.PSCEXC=SC3;
The query response SC3 indicates the excitation voltage for a board used by Scale 3 has fallen below 4.9V.
6.2.2 Cell Diagnostic Commands
Cell connection diagnostics are enabled when a cell is assigned to a scale.
Cell Connection Error, <D> = C
The cell connection diagnostic flag is set when one or more load cell wires is disconnected.
For data formats that include the <S> status token, a cell connection error also sets the status to I (invalid).
Query Command Example:
DIA.CELLCONNECT
DIA.CELLCONNECT=SC1 3;
The query response indicates that one or more wires of cell 3 on Scale 1 are disconnected.
Cell Overload Error, <D> = V
The overloaded cell diagnostic flag is set when the cell output exceeds a specified percentage of full scale cell out-
put set for the scale.
Query Command Example:
DIA.OVERLOAD
DIA.OVERLOAD=SC1 100.0% 4:15.233;
The cell overload query, DIA.OVERLOAD, returns information including the affected scale number (SC1), the
cell overload threshold (100% of full-scale output), the affected cell number (4:), and the millivolts value of the
overload error (15.233 mV).
Threshold Setting Command Example:
The cell overload threshold can be set using the SCs.DIA.OVERLOAD command. Specify the percentage of full-
scale output that will trigger the overload error condition.
SC1.DIA.OVERLOAD=90
The example above sets the overload threshold for Scale 1 to 90% of full-scale output. The threshold can be set to
any value from –100 to +100 percent; the default value is 100 percent.
The millivolts value of load cell full-scale output can be calculated by multiplying the sensitivity (mV/V) value for
the load cell by the excitation voltage of the
iQUBE 2 (5 volts). The default sensitivity value is 3.0 mV/V; the
default full-scale output is therefore 15 mV (3.0 mV/V * 5 V). Use the LCc.SENS command (where c is the load cell
number) to determine the configured load cell sensitivity.
Note
Note