Rice Lake iQUBE2 Digital Diagnostic Junction Box - Manual (Page 51)

Diagnostics 47
6.0 Diagnostics
The advanced diagnostic capabilities of the iQUBE 2 include power supply and excitation voltage monitoring, load
cell connection faults, cell overload or underload, unbalanced load, load cell drift, load cell peak-to-peak noise and
zero reference. Diagnostic flexibility allows for simple configuration and the ability to include the diagnostics in
the weight data or to monitor diagnostics on a separate communication port from weight data.
Load Cell Status
The iQUBE 2 CPU board provides bi-color cell status LEDs next to each load cell connector. These LEDs indicate
the status of connected load cells.
6.1 Diagnostic Functions
The iQUBE 2 provides three types of diagnostic functions: system, cell, and scale diagnostics.
• System diagnostics monitor the power supply and excitation voltages and communications between primary
and secondary boards. System diagnostics are always enabled.
• Cell diagnostics monitor cell connection, cell overload, and cell underload conditions. Cell diagnostics are
enabled for all cells that are assigned to a scale.
• Scale diagnostics provide control parameters to allow configuration for specific scale applications and must be
explicitly enabled. Scale diagnostic commands provide monitoring for zero reference, cell drift, peak-to-peak
noise, and unbalanced load conditions.
6.1.1 Diagnostic Error Detection
Diagnostics generate a code that can be included in any of the six available data formats, FMT1 through FMT6 (see
Section 7.0 on page 52). By default, the diagnostic code token, <D>, is included in FMT3 and FMT6. While a fail-
ure in a scale system may generate several error conditions, only the most critical diagnostic code is shown at one
time. Table 6-2 shows the diagnostic codes for the various error types, in priority order.
LED Color Meaning
Green Load cell good
Red Load cell error
Red/green flashing Consistent error being cleared by host
Off Disabled/load cell not assigned to a scale
Table 6-1. LED Status Indications
Diagnostic
Code
<D> Error Type
Associated Query
Command
P Power supply DIA.PS
S Secondary communication DIA.MSCONNECT
E Excitation DIA.PSEXC
C Cell connection DIA.CELLCONNECT
R Zero reference DIA.ZREF
V Overloaded cell DIA.OVERLOAD
D Drift DIA.DRIFT
U Underloaded cell DIA.UNDERLOAD
N Peak noise DIA.NOISE
L Unbalanced cell DIA.UNBAL
<space> No error —
Table 6-2. Diagnostic Codes and Query Commands