Legacy Protocol
System Status
D20980.026 Rev B
CV-LS Programming Guide
Page 10
1.2
Voltage Monitors
1.2.1
Input
1.2.1.1
Voltage
&?VI
Get the voltage of the input rail. This will be the higher voltage of the 2 inputs to the
unit.
Input Voltage is rated for 18 - 28V.
Return string:
&?viX.XX
Return value (
X.XX
): Floating Point Voltage with 2 decimal places
1.2.1.2
Status
&?VIS
Gets the status of the input rail. This will report a warning as the voltage nears its range,
then turn to an error before the unit shuts down.
Warning = V > 28 or V < 19
Error = V > 30 or V < 18
System shutdown will occur near 17.5V and will not turn on again below 18V. Voltage
above 33V will damage the LED driver circuit.
Return string:
&?visX
Return value (
X
): 1 = Good, 2 = Warning, 3 = Error
1.2.2
Reference 5V Output
1.2.2.1
Voltage
&?VO
Get the actual voltage of the 5V reference pin on the multiport.
Output Reference Voltage is 5V +/- 0.1V.
Return string:
&?voX.XX
Return value (
X.XX
): Floating Point Voltage with 2 decimal places
1.2.2.2
Status
&?VOS
Gets the status of the 5V reference rail. This will report a warning as the voltage is
pulled out of regulation. This would generally be caused by overloading the output
regulator.
Warning = >10%
Error = >25%
Return string:
&?vosX
Return value (
X
): 1 = Good, 2 = Warning, 3 = Error
1.3
Fan
1.3.1
Speed
&?G
Gets the current fan speed in RPM
Return string:
&?gX
Return value (
X
): 0 – 24000
