Rev A Feb 2020
Page 50
in the driver for use in absence of a PC. To save the settings to hardware, check the
‘Persist Settings to Hardware’ checkbox before clicking the ‘OK button.
6.3.3 Triggering Tab
Fig. 6.5 Triggering Settings
Triggering Introduction
The K-Cube piezo motor controllers have two bidirectional trigger ports (IO1 and IO2)
that can be used to read an external logic signal or output a logic level to control
external equipment. Either of them can be independently configured as an input or an
output and the active logic state can be selected High or Low to suit the requirements
of the application. Electrically the ports output 5 Volt logic signals and are designed
to be driven from a 5 Volt logic.
When the port is used in the input mode, the logic levels are TTL compatible, i.e. a
voltage level less than 0.8 Volt will be recognized as a logic LOW and a level greater
than 2.4 Volt as a logic HIGH. The input contains a weak pull-up, so the state of the input
with nothing connected will default to a logic HIGH. The weak pull-up feature allows a
passive device, such as a mechanical switch to be connected directly to the input.
When the port is used as an output it provides a push-pull drive of 5 Volts, with the
maximum current limited to approximately 8 mA. The current limit prevents damage
Caution
The ‘Persist Settings’ functionality is provided to simplify use of the unit in the
absence of a PC. When the unit is connected to a PC and is operated via
APTUser, the default APTServer settings will be loaded at boot up, even if the
‘Persist Settings’ option has been checked.
