234 9440500990 Rev D
Modbus™ Communication DECS-250N
Name Register Type
R/W Unit Range
RMS Generator Volts Phase A to B
RMS Generator Volts Phase B to C
RMS Generator Volts Phase C to A
Generator Current IB in amps
Generator Apparent Power in kVA
Generator Real Power in kW
Generator Reactive Power in kvar
Generator Frequency in Hertz
Var/PF Controller Output in Volts
Phase Angle Between Phase B Voltage and
Current
Current Input for Load Compensation
Error Signal to Autotracking Loop
Status of Front Panel LEDs
(bit flags, 0 = off, 1 = on for all
LEDs except Null Balance and
Internal Tracking, which are
reversed): b0 = Null Balance, b1
= Tracking, b2 = Pre-position, b3
= Upper Limit, b4 = Lower Limit,
b5 = Edit, b6-b15 = unassigned
Protection Status Bit Flags 1
(0 = clear, 1 = condition present):
b0 = field overvoltage, b1 = field
overcurrent, b2 = gen.
Undervoltage, b3 = gen.
overvoltage, b4 =
underfrequency, b5 = in OEL, b6
= in UEL, b7 = in FCR mode, b8
= loss of sensing voltage, b9 =
setpoint at lower limit, b10 =
setpoint at upper limit, b11 = gen.
failed to build up, b12 = gen.
below 10Hz, b13 = unassigned,
b14 = exciter diode open, b15 =
Active Operating Setpoint in Percent
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