If the available current from the internal power supply is not enough, simply use
an external power supply, as shown above.
2.4.2 Digital Inputs
Parameter Min Typ Max Unit
Input voltage -30 - 30 V
Input guaranteed OFF if -30 - 7 V
Input guaranteed ON if 10 - 30 V
Guaranteed OFF if 0 - 5 mA
ON Current (10-30V) 6 - 10 mA
The digital inputs are implemented as pnp which means that they are ac-
tive when voltage is applied to them. The inputs can be used to read buttons,
sensors or for communication with other PLC systems. The inputs are compliant
with all three types of digital inputs defined in IEC 61131-2 and EN 61131-2, which
means that they will work together with all types of digital outputs defined in the
same standards.
Technical specifications of the digital inputs are shown below.
Digital Input, Simple Button
The above example shows how to connect a simple button or switch.
Digital Input, Simple Button, External Power
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