Advanced Energy HFV 8000, User Manual

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4-56 Communication Interfaces 5705211-C
Advanced Energy
®
Note 3: POS = Power on/off status
• 0 = Power off
• 1 = Power on
Note 4: SPS = Set point status
• 0 = Not at set point
• 1 = At set point
Note 5: TS = Temperature status
• 0 = Overtemperature
• 1 = Not at overtemperature
Note 6: INTS = Interlock status
• 0 = Interlock not satisfied
• 1 = Interlock satisfied
Scaling
Parts of the message structure are based on binary representations of analog voltages
and have analog scaling associated with them.
DeviceNet uses unsigned binary to represent zero to the full-rated output power of the
HFV generator (scaled 0 V to +10 V). Use
Table 4-37 to define the voltage ranges and
the corresponding digital values (assuming N is the number of bits of resolution
available at the DeviceNet interface).
The conversion is assumed to be linear across the range (a one-bit change always
corresponds to the same change in output power within the hardware capabilities of
the power supply.
Values exceeding 0FFFh are limited to 0FFFh. Thus, the maximum calculation of a 10
kW unit (at 12-bit resolution) is 0FFFh (or 4095 decimal).
Table 4-37. DeviceNet voltage ranges
0 to +10 V Range
AI/AO Digital Value (at the
DeviceNet interface)
Analog Input/Output to device
0 0.000 V
2
N
1 –
10 V
2
N
1 –
2
N
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×