User Manual

BOOSTERS 2G
© Nedap IDEAS, P.O. Box 103, NL-7140 AC GROENLO Page 7 of 21
3.3 13BREADER OUTPUT TACHO INFO
Tacho-Booster mode (Vehicle-ID + Driver-ID + Tacho-Counter)
The prox-booster tacho should be connected to the speed pulse generator of your vehicle. The prox-booster will
count the number of pulses generated.
The Booster cannot be identified until the driver inserts his personal identification card and pushes the Booster’s
button. Once the button is pushed the Booster reads the personal identification card and beeps
P

P upon a
successful read. Both vehicle-id, driver-id and tacho-counter are transmitted to the host system for 5 seconds.
Afterwards the Booster automatically deactivates again. The tacho counter will be updated while the booster is
deactivated. The booster will remain active when in 'always-on'-mode.
Example reader output: vehicle-id = 123, driver-id = E4947C46, tacho-counter = 2AC4,
TXD = X000000012300E4947C468000002AC4P
C
PR
R
RP
L
PR
F
R
Event identifier ('X' = triple identifier detection event).
Vehicle-id (10 digits).
Driver-id (10 digits).
Additional data identifier ('80' = tacho counter).
Additional data (in this case the tacho counter value).
How to calculate the constant factor required to convert tacho counter value into travelled distance.
 Get the vehicle's initial mileage
)(
1
M
and the initial tacho counter value
)(
1
T
.
 Drive the vehicle for a significant amount of miles (or kilometers).
 Then again get the actual mileage
)(
2
M
and the actual tacho counter value
)(
2
T
.
 Now calculate the number of counts per mile (or km) by using the following formula:


12
12
MM
TT
K



How to calculate the vehicle's travelled distance.
 Get the actual tacho counter value
)(
n
T
 Calculate travelled distance by using the following formula:

K
TT
D
n
n
1


 Calculate the current mileage by using the following formula:
1
MDM
nn

.