04 - FIM03 as Stand Alone Module
FIM03 can be easily configured to run in different CAN bus operating modes using VBOX Setup software.
User Polled Mode - Allows a third party data logger to poll FIM03 for data using the CAN bus.
Timed Mode - FIM03 will send CAN data at intervals determined by the Timer value.
Connect FIM03 to the PC using a RLCAB001 cable.
Power up FIM03 using a suitable 12 V power source – this can be done via connection to a powered VBOX. Run VBOX Setup software and select the correct COM port to connect to FIM03 (check PC device manager if unsure).
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User Polled Mode
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Timed Mode
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When selecting Timed Mode, the option to set the Timer value will appear. The timer value is in milliseconds (ms). A smaller value means data will be sent more frequently, a larger value means data will be sent less frequently. The range of values that can be entered is 0 to 30000 however the minimum value that should be entered is 10. Any figure below this may cause data to be repeated on successive cycles.
If a value of 0 is entered this will be changed to 1 on the next power cycle.
Frequency output can be calculated as follows:
Freq = (1/Timer) * 1000
The timer value for a required frequency can be calculated as follows:
Timer = (1/Freq) * 1000
Some example timer values are shown against the frequency output below:
| Timer Value (ms) | Frequency (Hz) |
|---|---|
| 10 | 100 |
| 50 | 20 |
| 100 | 10 |
| 400 | 2.5 |
| 1000 | 1 |
Brake Trigger
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ID – Sets the ID of the CAN message which contains the brake trigger signal for resetting the pulse counter.
Byte – Defines which byte of the CAN message specified above is the brake trigger bit. This value reads from right to left, from 0 to 7.
Bit – Defines which bit of the byte specified is the brake trigger bit. This value reads from right to left, from 0 to 7.
Polarity – Specifies whether a brake trigger bit of 1 signifies that the brake trigger is ON (1) or OFF (0)
Channel Setup
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Output Modes
The output mode menu is used to select one of five display values for each channel. They are frequency, RPM, mph, km/h and pulse count plus fuel flow and fuel rate on channels 2 and 3.
Frequency
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In Frequency mode the channel will be measured as a direct frequency. Scale and offset are available in this mode. A scale of 1 and offset of 0 will record a value in Hz. Changing the scale and offset allows calibration of signal input units when using digital output sensors such as pressure sensors.
RPM
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Displays the channel as engine speed. When this mode is selected a drop down menu will appear allowing the number of pulses per revolution to be set.
Speed (km/h or mph)
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Speed output mode is designed for use in vehicle testing. It enables the user to configure pulses per revolution corresponding to a wheel speed sensor and a wheel diameter. Wheel circumference is calculated from the wheel and tyre measurements. In conjunction with the pulses per revolution this allows FIM03 to output either km/h or mph values for each of the four signal inputs.
Pulse Count
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Selecting pulse count mode allows the number of pulses received since the last reset to be viewed. The counter can also be configured to reset when the brake trigger signal is activated. The maximum number of pulses counted before the count is reset is 1000000.