User manual

CONTROLLINO Instruction Manual Page 15 (31)
Interrupt Inputs (IN0 and IN1)
In addition to the normal analog and digital inputs, CONTROLLINO PLCs also have 2 special inter-
rupt inputs. This inputs are capable of measuring very fast and important switching operations.
The electrical behaviour is identical to the normal digital inputs. If a logic "1" is detected, the
corresponding LED "IN0" or "IN1" is green. The LED does not light up for a logic "0".
The advantage of these inputs is the possibility of trigging and executing subroutines at the
change of inputs level. For achieving this, the normal user program is interrupted, and the default
routine performs its important tasks, e.g. limit switches, counters etc. After running the interrupt
routine, the normal user program continuous.
Digital outputs (D0 to D.. and R0 to R..)
The CONTROLLINO PLCs have "High-Side Switch" outputs, "Half-Bridge" outputs (only MEGA) and
potential free relay outputs. Some of these outputs are also capable of generating PWM (Pulse
Width Modulation) signals. Therefore it is possible to dim a lamp or to control the speed of a DC
motor.
Digital Outputs
The digital "High-Side Switch" outputs and "Half-Bridge" outputs (only MEGA) are labelled with
"D0" to "D.." on the upper side of the CONTROLLINO housing. The supply voltage of each of this
digital screw terminals can be loaded with 2A @12V or @24V. Each of this outputs are short-
circuit proof and limits the maximum output current automatically. The internal resistance when
switched is about 70mΩ when using the "High-Side Switch" outputs and about 240mΩ when using
the "Half-Bridge" outputs.
INFO: This outputs are not potential free. The load has to be connected between the output and
GND. At the "Half-Bridge" outputs you can also put the load between two outputs, to drive for
example a DC motor in both directions.
WARNING: these digital outputs are not made to switch 230V.