Figure 10. IBS Monitoring Window
10.4.3 Run Time Counter
The DPM also monitors the duration of time that it has been in operation. The 4 bytes Run Time Counter is active
whenever the DPM is powered up. The count rate is 1 second. The counter is loaded into RAM upon power-up and
the new count state is periodically saved to the non-volatile memory. Contents of the counter can be examined in the
GUI IBS Monitoring Window shown in Figure 10 or directly via the I2C bus using specific commands.
10.4.4 IBV Monitoring
The DPM continuously monitors the intermediate bus voltage via the IBVS input and the built-in 10-bit ADC. The
digital representation of the bus voltage is stored in RAM and reported in the IBS Monitoring window shown in
Figure 10.
In addition, the DPM continuously compares the value of IBV to the Undervoltage and Overvoltage thresholds
programmed in the GUI Intermediate Bus Configuration Window shown in Figure 11.
ZD-00896 Rev. 5.2, 9-Apr-13
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