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Chapter 2Chapter 2 Configuration and Configuration and
InstallationInstallation
2.12.1 IntroductionIntroduction
This chapter contains instructions on the configuration and installation of the UDAS unit.
2.22.2 Power-on Default Digital I/O ConfigurationPower-on Default Digital I/O Configuration
In some situations, it is important to have the digital output port on a UDAS unit initialize at
power-on to a particular state. For example, if the digital output port controls a piece of
mechanical equipment, safety regulations may require the digital output port bits to have values
of 0000 0011 when power is first applied. Port 1 on the UDAS unit provides the ability to set the
power-on direction to output and the states of all of the bits. A switch block located on the main
board of the UDAS unit accomplishes this task. Since the default switch states configure the port
for input, you may not need to change the switch settings.
This section contains instructions for setting the power-on default Digital I/O configuration, if
applicable.
Removing the CoverRemoving the Cover
1. Unplug the power supply to the UDAS unit.
2. Using a Phillips head screwdriver, remove the two Phillips head screws on the front face plate
of the UDAS unit I/O cover. The front face plate contains the power and status indicators and
the USB connector.
3. Carefully separate the face plate from the cover.
4. Slide the cover towards the open end of the unit to free it from the back termination plate,
removing the cover from the UDAS unit.
CAUTION:
Use proper static-sensitive device handling procedures (such as the use of grounded
wrist-strap) when opening the unit, as damage to the equipment may occur.