Data Sheet

Signal description
Signal Name Description
INT-S Internal signal Internal connection to the microcontroller, can be used as GPIO (BI,
PI, BO, PO modules) or PWM (AO modules). If supported by the
microcontroller, also analogue signals (ADC or DAC) (AI, AO
modules) or 1-wire serial interface (AI modules), for
microcontrollers that do not have ADC functions.
INT+ Internal positive supply Internal power supply from the microcontroller, e.g. 3.3 V or 5 V
INT− Internal negative supply Ground of the internal supply circuit
EXT− External negative supply Ground of the external supply circuit
EXT+ External positive supply External power supply, mostly 24 V DC
EXT-S External signal External signal. This is where the external signals like switching
signals, switched loads, temperature sensors, analogue sensors or
analogue control inputs are connected.
Dimensions
Rev-2019-08 Page 10 of 20 www.tde-instruments.de