1. PROTOCOL
PROTOCOL FOR DASH DISPLAY INTERFACE WITH ALL AC CONTROLS
The serial communication interface is a standard NRZ (mark/space) format.
The receive and transmit baud rate is 9600.
Each byte of data consists of one start bit, eight data bits, and a stop bit.
The fault information is transmitted as two bytes of data. The first 8 bits is the ID byte (250 decimal) followed by the 8 bits of data.
The battery state of charge is transmitted as two bytes of data. The first 8 bits is the ID byte (200 decimal), followed by the 8 bits of data (0 to 100 decimal) 100 = fully charged battery.
The hours are transmitted as three bytes of data. The first 8 bits is the ID byte (190 decimal), followed by 8 bits of data (0 to 99 decimal), followed by 8 bits of data (0 to 250 decimal.) The first 8 bits are the tens and units, and the second 8 bits are the thousands and hundreds of hours.
0 = 0hr(Min hour)
25000 = 25000hr(Max. hour)
The hour data restart at the 0hr when it over the 25000hr.
The speed information is transmitted as two bytes of data. The first 8 bits is the ID byte (180 decimal), followed by the 8 bits of data (0 to 250 decimal)
0 = 0.0km/hr
125 = 12.5km/h
250 = 25.0km/h
The speed limit information is transmitted as two bytes of data. The first 8 bits is the ID byte (130 decimal), followed by the 8 bits of data (0 to 100 decimal)
100 = full truck speed
2. Regarding the DATA Display (Battery/Error Codes/ Hourmeter)
The Full data(Fault, Battery, Hour, Speed & Speed limit) are transmitted when the key switch_ON.
The full data must be transmitted in every 100milliseconds, such as transmit in 20ms of each datas.
If the Key switch is OFF, the controller stops
