Data Sheet

Note

These instructions are recommendations only and may vary depending on the environment, the total

bus length and number of sensors.

1-Wire channel features RESET function, which serves for resetting of the whole 1-Wire bus. This may

be useful when used in unstable environment. Configuration of this function depends on chosen

software as further described in chapter 3.

2.4.4 Digital input connection

Digital inputs are usually used with devices such as switches (light switches, buttons), motion sensors,

door contacts, and window contacts etc. Logic state 1 (switched on) of each input is signalized by

relevant indication of LED diode on the front side of the product case.

For connection of external device to digital input there are screw connectors marked with DiX (or possibly

DiY.X) and DiGND. Each digital input connector share a common ground connector for connection of

negative pole of DC voltage source. Voltage source positive pole is to be connected over external device

to DiX connector as shows the picture below.

Note

For signalization of state of external devices connected to digital inputs it is recommended to use

different power supply to provide proper galvanic isolation.

Do not miss!

Some models feature its own 24V DC power source for use with digital inputs. Its output leads to screw

connectors DIVGND and DIVOUT. For correct functioning of digital inputs with this power supply it is

also necessary to interconnect DIVGND and DIGND. Maximum current on each of the DIVOUT screw

connectors is limited to 120 mA which is enough for 30 digital inputs.

Extended functionality

Each digital input features along with state indicator also pulse counter.

If there are also digital (or relay) outputs as well digital inputs in the device, it is possible to use one of

three so called Direct switch functions available for DiY.X inputs and DoY.X / RoY.X:

 Polarity – it is possible to achieve two possible behaviors using this function

o Identity – The input state is written to the output

o Negation – Negated input state is written to the output.

o More information in chapter 3.4.1.3

 Toggle – if rising edge is detected on input, the output is negated