User's Manual

Hardware Interfaces
A DIVISION OF TRIMBLE
28 Hardware Overview
Configuring GPIO Settings
The GPIO lines are configured as inputs or outputs through the MercuryAPI by setting the
reader configuration parameters /reader/gpio/inputList and /reader/gpio/outputList. Once
configured as inputs or outputs the state of the lines can be Get or Set using the gpiGet()
and gpoSet() methods, respectively. See the language specific reference guide for more
details.
ENABLE Line
CAUTION!
!
!
The polarity of the ENABLE line is opposite from the 4-port M6e module.
The ENABLE line (referred to as the SHUTDOWN line in the M6e) must be set HIGH (Vin
level) or Open Circuit to ENABLE module. In order to shut down the module, the line can
be set LOW or pulled to Ground. Switching from high to low to high is equivalent to
performing a power cycle of the module. All internal components are powered down when
set low.