MoTeC Global Forum

Hi Guys,

I have got an SDL with a E888 wired via can in my funny car. A few questions as i am new to using this kind of motec before. (only used M800 in the past)

I have wired up the SDL and E888 for thermocouples and its all working good. I would like to add my SLM to the logger, and was wondering weather i could use the second Can bus on the E888 to send the CAN signal to the SLM. Or does this have to be wired into the origanl CAN wires from the SDL?

Also, i have noticed there are some extra inputs on the E888 that would be good to use to add a few extra sensors in, like G meter, TPS and Input Shaft RPM, am i able to use the expander for this?

Thanks
JR

I don't believe CAN2 is functional unless it got turned on in a firmware upgrade. All your stuff can communicate over the same bus.

No problem on sensors, except keep in mind the E888-816 is a 'dumb box' and only transmits raw sensor values, it does not do anything else. When you write a sensor cal file for a 0v-5v sensor from the E888 into the Dash/ECU, remember the E888 is going to transmit as mV not Volts plus 3 decimal places. Same with speed sensors, E888 only transmits frequency, all calibration of that sensor to reflect speed, distance, or RPM is done in Dash/ECU sensor setup or in i2. Frequency is also limited to a max of 3276 Hz.

Also if you have your TC's calibrated in deg F realize the E888 transmits in deg C, raw data -100 = -100C, 1000 = 1000C, 0 would equal 32F. The default F conversion in the ECU's is (or at least was) incorrect and did not reflect the 32F offset at 0C.

I believe all the sensor inputs gets transmitted over CAN at 200 Hz.

Oh, and if you are using the PWM outputs, odd numbered are high speed/fine resolution, even numbered are low speed/low res 100Hz max 5% DC per step.