Automobile Accessories User Manual

40 MW810 Mobile Workstation Vehicle Installation Manual
AUX Port Connection
The AUX port provides ignition sense connection to the MW810 Mobile Workstation.
The AUX port can also used as power supply of 5 to 27 VDC (pr-programmed Voltage) at
maxim
um current of 1.5A to any auxiliary equipment inside the vehicle.
The AUX port provides four predefined GPIO (the port can be set as input or output) and two
GPO (out
put only) ports. The output Voltage can be pr-programmed to 5 to 27 VDC at
maximum current of 150mA.
To set the GPIO ports and power supply output in the
CPU
Codeplug, refer to Motorola
Solutions MW810 Mobile Workstation, R2.0, Administrator Guide (P.N: 6802988C42).
The Low “0” input signal range is 0 to 0.2V and the High “1”
input signal range is 3.3 to 33V.
For complete pin assignment of the AUX
port, refer to Table 4.
Ignition Sense Connection
To install the ignition-sense cable between the AUX connector and the vehicle ignition line,
carry out the following steps:
Step 1. Connect one end of the ignition-sense
wire to pin 8 of the AUX connector, and the
other end to the vehicle ignition switch.
Step 2. Connect pin 7 to the vehicle Ground.
Table 4
AUX Connection - Pin Layout
When an I/O port is configured as an Input port, the external voltage must be
supplied to that port via 160 Ohm resistor to ensure proper operation.
!
Caution
Figure 27
AUX Connection - Ignition Sense Pin-outs
Pin 8 to vehicle ignition switch
Pin 7 to vehicle ground
Pin1
Pin 26
Pin No. Signal Description
1 SPEED+
Positive
vehicle speed input signals
2 SPEED-
Negative
vehicle speed input signals
3 FWD+ Forward/Backward drive direction input signals