7.13
Diagnostics
7.13.1
I/O Point Health Status
Each I/O point on the module has an associated health status. The health of each point is continuously monitored and marked
unhealthy for the following conditions (and a per-point diagnostic alarm is generated):
•
For mA inputs
−
if the user-defined Min/Max mA limits are exceeded.
−
if the currents through the burden resistor exceed 30 mA
•
For voltage inputs, if the hardware input limits are exceeded
•
For RTD inputs
−
if the input value exceeds the maximum or is below the minimum temperature range of the selected device
−
if the expected data received is missing or invalid.
−
if hardware limits are exceeded
•
For each TC input
−
if the input value exceeds the maximum or is below the minimum temperature range of the selected device
−
if the temperature value is calculated using an extrapolated range beyond the device temperature curve table.
−
if the input voltage exceeds the HW input limits of -40 mV to 114 mV.
−
if the input is open, no sensor connected (burnout detection).
•
For mA outputs
−
if commanded current exceeds the hardware limits
−
if current output feedback (from sense resistor) does not match the commanded current
•
For Digital Inputs
−
if input voltage exceeds HW max or min limits
−
if an open wire is detected when using line monitoring
−
if a short is detected when using line monitoring
−
if sensor fault is detected when using a NAMUR input
•
For Pulse Accumulator Inputs
−
if input voltage exceeds HW input limits of -11 V to 21 V
7.13.2
I/O Status LEDs
The following I/O status LEDs are driven by the I/O pack firmware. For common BPPC processor LEDs, refer to the section
Common I/O Module Functionality
.
Channel Number
Color
Status
1–16
Green
Assigned/healthy
Red
Unhealthy or point initialization in progress
Not Lit
Channel not used
Note
Refer to the illustration of the I/O pack faceplate in the section
Mark VIeS YUAA Universal I/O Pack
for the I/O status
LEDs.
YUAA Universal I/O Modules
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