The term connector refers to all connections and states in LOGO! .
The digital I/O status can be '0' or '1'. Status '0' means that the input does not carry a specific
voltage. Status '1' means that the input does carry a specific voltage.
The 'hi', 'lo' and 'x' connectors have been introduced to make it easier for you to create the
'hi' (high) is assigned the status '1',
'lo' (low) is assigned the status '0'.
You do not have to use all of the connectors of a block. The circuit program automatically
assigns the unused connectors a status that ensures proper functioning of the relevant
block. If you prefer to do so, you can identify unused connectors with an 'x'.
For information on the meaning of the term "block", refer to the topic on "Blocks and block
numbers (Page 61)".
LOGO! has the following connectors:
DM: Digital module
AM: Analog module
Manual, 10/2017, A5E01248535-AA
LOGO! Basic / LOGO! Pure
Logical '0' signals (off)
Logical '1' signals (on)
An existing connection that is not used
I1...I4 and I5...I8
I1,I2, I3-I6, I7, I8
I9 ... I24