8.3 Data log fields 8 TROUBLESHOOTING AND DATA LOGGING
The stepper enable output is on whenever either stepper output is active.
Port P
128 64 32 16 8 4 2 1
PWM / Idle
Out 1
PWM Out 3 High
Current Out
2
High
Current Out
1
High
Current Out
3
PWM OUt 2 - -
P7 P6 P5 P4 P3 P2 P1 P0
Port T
128 64 32 16 8 4 2 1
- Digital
frequency in
3
Digital
frequency in
2
Digital
frequency in
1
Injector J CMP Injector I CKP
T7 T6 T5 T4 T3 T2 T1 T0
• PW1: The base fuel pulsewidth for injector channel 1. This is the actual electrical pulsewidth including
deadtime, but not trim. See also SeqPW1.
• PW2: The base fuel pulsewidth for injector channel 2. This is the actual electrical pulsewidth including
deadtime, but not trim. Primarily for dual table or dual fuel.
• PWM A-F duty: Output duty cycle from Generic PWM system.
• PWM Idle Duty: The current duty cycle output to the idle valve.
• RPM: The tachometer / rev counter (if this is dropping to zero or bouncing around, you probably have a
problem with the tach-in signal.)
• RPMdot: The rate of change of RPM (the increase in RPM per second.)
• SD card error: Error code for SD card datalogging system - see the SD logging section for a list.
• SD card file number: The current active datalog file number on the SD card.
• SD card phase: Technical code relating to SD card datalogging system.
• SD card status: Bitfield indicating current status of SD card datalogging system.
• SecL: A built in clock that counts up seconds since the MS3Pro was last turned on. If this suddenly resets
to zero, you probably have a power connection problem.
• Secondary Ign Load: Like “Ign Load” but used for the secondary lookup table.
• Secondary Load: Like “Load” but used for the secondary fuel lookup table.
• Sensor01-16: The reading from a sensor converted into your chosen units through the Generic Sensors
system. You can also give the sensors a name of your choice which will then be used in the datalog.
• Seq PW1-8: The base fuel pulsewidth for the injector on cylinder #1. This is the actual output electrical
pulsewidth including deadtime, all corrections and trim. (The "Firing Order" setting is used to determine
which cylinder is which as the injectors always fire in the same order. A,B,C...)
• SPK: 3-step Timing: The spark timing/advance taken from the 3-step system.
• SPK: ALS Timing: The spark timing/advance taken from the anti-lag system.
• SPK: Base Spark Advance: The spark timing/advance looked up from the ignition table before other ad-
justments are made.
• SPK: CEL retard: The retardation to the timing due to check engine light and limp mode.
• SPK: Cold advance: The advancement to the timing due to the cold advance curve.
• SPK: External Advance: The external advancement to the timing, e.g., from a transmission controller.
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 289
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