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SmartVue Operator’s Manual
128
10-0004-R13
21.4.6 J1939 DTC Input Register (Function Code 3 or 4 - Read Only 16-bit)
Modbus J1939 DTC Registers
Function Code 3 or 4 - Read Only 16-bit
Offset
Register
Modicon
Modicon
Data
1100
1101
31101
41101
STATUS1
1101
1102
31102
41102
ECU1
1102
1103
31103
41103
LAMP1
1103
1104
31104
41104
NCODES1
1104
1105
31105
41105
DTC1-1_H
1105
1106
31106
41106
DTC1-1_L
1106
1107
31107
41107
FMI1-1
1107
1108
31108
41108
OC1-1
1108
1109
31109
41109
DTC1-2_H
1109
1110
31110
41110
DTC1-2_L
1110
1111
31111
41111
FMI1-2
1111
1112
31112
41112
OC1-2
…
…
…
1140
1141
31141
41141
DTC1-10_H
1141
1142
31142
41142
DTC1-10_L
1142
1143
31143
41143
FMI1-10
1143
1144
31144
41144
OC1-10
…
…
…
1144
1145
31145
41145
STATUS2
1145
1146
31146
41146
ECU2
1146
1147
31147
41147
LAMP2
1147
1148
31148
41148
NCODES2
1148
1149
31149
41149
DTC2-1_H
1149
1150
31150
41150
DTC2-1_H
1150
1151
31151
41151
FMI2-1
1151
1152
31152
41152
OC2-1
1152
1153
31153
41153
DTC2-2_H
1153
1154
31154
41154
DTC2-2_L
…
…
…
1760
1761
31761
41761
STATUS16
1761
1762
31762
41762
ECU16
1762
1763
31763
41763
NCODES16
1763
1764
31764
41764
DTC16-1_H
1764
1765
31765
41765
DTC16-1_L
1765
1766
31766
41766
FMI16-1
1766
1767
31767
41767
OC16-1
1767
1768
31768
41768
DTC16-2_H
…
…
…
1803
1804
31804
41804
OC16-10
Notes
•
ECU STATUS: bit0=timeout, bit1=invalid, bit2=stack_not_running, bit3=disabled
•
LAMP: Indicator Lamps
bit1: 0=Protect Lamp Status (SPN 987)
bit3: 2=Warning Lamp Status (SPN 624)
bit5: 4=Stop Lamp Status (SPN 623)
bit7: 6=MIL Status (SPN 1213)
bit9: 8=Flash Protect Lamp (SPN 3041)
bit11: 10=Flash Warning Lamp (SPN 3040)
bit13: 12=Flash Stop Lamp (SPN 3039)
bit15: 14=Flash MIL (SPN 3038)