CEMB USA C65 (G) - Manual (Page 22)

I 0559 - 22 GB
7.4.4 - Self-diagnostic wheel balancing machine
An automatic self-diagnostics cycle is provided for easier trouble shooting. At the end of the self-diagnostics cycle,
several parameters are displayed which are useful for the Technical Service Department in order to identify machine
faults.
Returns to previous menu.
7.4.4.1 - To check the encoder
When the spindle is rotated:
- the angular position “POS” should vary from 0 to 128;
- the wording “UP” should appear when rotated clockwise and “DOWN” when rotated in the opposite direction.
Encoder check
Check for correct ope-
ration of the distance
gauge; the number
increases when the
gauge is pulled out.
Check for correct
operation of the diame-
ter gauge; the number
increases when
the gauge is rotated
outwards
Check of the width sonar (option):
the number decreases when a sur-
face is approached to the sonar.
In the event of failure or faulty operation of the wheel balancing machine, notify the Technical Service of all the para-
meters displayed.
7.5 - Control of serial output RS232C (option)
This option enables/disables the sending of the measured unbalance and phase values to serial output RS232C.
Transmission speed
= 9600 baud
Data format = 7 bit Start
7 bit Data
1 bit Even parity
1 bit Stop
At the end of each unbalancing measuring spin, the balancing machine enables the RTS signal, then places the “$”
character on standby to be able to transmit the data; all functions remain on hold until data transmission is enabled,
at the end of which the RTS signal is reset to the inactive state.
The items of data transmitted via serial line are in ASCII format and are separated between each other by the <cr>
character (0x0d).
Sending sequence is as follows:
- 0000 <cr>
- Value of correction weight, left side <cr>
- Correction phase, left side <cr>
- Value of correction weight, right side <cr>
- Correction phase, right side <cr>
The fi rst 5 zero bytes represents the start of transmission message. The correction values are expressed in grams, in
steps of .1 gram. The phase values are expressed in degrees, in the range 0% 359.
Check of the eccen-
tricity sonar (option):
the number decrea-
ses when a surface
is approached to the
sonar.
Width