9440300990 27-3
DECS-250 CAN Communication
PGN Name Units SPN
Broadcast
Rate
0xFF03 Data Bytes 1–2 Power Factor Setpoint Adjust
Operating Range: -1.0 to +1.0
Scaling: 0.0001/bit
Offset: -1.0
Scaled Data Range: 0 to 20,000
Scaled Data Offset: 10,000
Data Bytes 3–4 Q(Voltage Limit) Bias Adjust
Operating Range: -0.45 to +0.45
Scaling: 0.0001/bit
Offset: -0.45
Scaled Data Range: 0 to 9,000
Scaled Data Offset: 4,500
Data Bytes 5–6 Q(U) Reference Voltage Adjust
Operating Range: -0.1 to +0.1
Scaling: 0.0001/bit
Offset: -0.1
Scaled Data Range: 0 to 1,000
Scaled Data Offset: 1,000
Data Bytes 7–8 Q(Third Party) Q Reference Adjust
Operating Range: -0.45 to +0.45
Scaling: 0.0001/bit
Offset: -0.45
Scaled Data Range: 0 to 9,000
Scaled Data Offset: 4,500
n/a n/a 100 ms
0xFF04 Data Bytes 1–2 Active Power Reference Adjust
Operating Range: -1.00 to +1.00
Scaling: 0.0001/bit
Offset: -1.0
Scaled Data Range: 0 to 20,000
Scaled Data Offset: 10,000
Data Bytes 3–8 Reserved
n/a n/a 100 ms
0xF015 Requested Generator Total AC Reactive Power (var Setpoint) var 3383 n/a
Requested Generator Overall PF (PF Setpoint) n/a 3384 n/a
Requested Generator Overall PF Lagging (PF Setpoint) n/a 3385 n/a
0xF01C Requested Generator Average L-L AC RMS Voltage
(AVR Setpoint)
Volts 3386 n/a
Diagnostic Trouble Codes (DTCs)
The DECS-250 will send an unsolicited message of a currently active diagnostic trouble code (DTC).
Previously active DTCs are available upon request. Active and previously active DTCs can be cleared on
request. Table 27-2 lists the diagnostic information that the DECS-250 obtains over the CAN Bus
interface.
DTCs are reported in coded diagnostic information that includes the Suspect Parameter Number (SPN),
Failure Mode Identifier (FMI), and Occurrence Count (OC) as listed in Table 3. All parameters have an
SPN and are used to display or identify the items for which diagnostics are being reported. The FMI
defines the type of failure detected in the subsystem identified by an SPN. The reported problem may not
be an electrical failure but a subsystem condition needing to be reported to an operator or technician. The
OC contains the number of times that a fault has gone from active to previously active.
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