Topic100031

AI/DI_Type064_5

These pins are analog inputs
The pins can be configured either as a current input or as a voltage input.
There is a control signal for selecting:
Voltage mode: High impedance input for signal from 0 to 5 V
Current mode: Low impedance input for signal from 0 to 22 mA
These pins can be used as high impedance voltage inputs for signals from 0 to 5 volts or low impedance current inputs for signals from 0 to 22,7 milliamperes. Pins of this kind can be used as e.g. joystick connection when 41 kΩ + 2,5 V (voltage input) is selected.
Inputs are divided into groups by the input impedance configuration.
The groups are indicated with lower case characters in the pin table's Group column in section I/O list).
The input impedance of each group is controlled by a bit in output memory (%Q).

When configured to current mode, analog inputs can be protected against overvoltage by using 3000AnalogInputProtection programming library. For more information, refer to Epec Programming and Libraries Manual.

DI

These pins can also be used as digital inputs by using an application library
The pin must be configured to voltage mode when using as digital input

Electrical characteristics

*Symbol*	*Parameter*	*Conditions*	*Min*	*Max*	*Units*
VI	Input Voltage measuring range		0	5	V
R+2,5V	Input Resistance	Voltage mode (referenced to +2,5 V)	typ. 41		kΩ
R+2,5V	Input Resistance	Current mode	typ. 220		Ω
II	Input Current measuring range		0	22,7	mA
IE	Input Error	Voltage mode		0,18	V
IE	Input Error	Current mode		0,8	mA
BW	Input Low Pass Filter Bandwidth	-3 dB cut-off frequency	typ.40		Hz
CI	Input pin capacitance		typ. 47		nF
VI-range	Input voltage range	Voltage mode Overload conditions (Note 1)	-0,5	33	V
VI-range	Input voltage range	Current mode Overload conditions (Note 1)	-0,5	30	V

Note 1: Exceeding the max value might cause damage to input.

Functional block diagram