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Programming LOGO!

3.1 Connectors

LOGO! is equipped with inputs and outputs
Example of a configuration with several modules:
Each input is identified by the letter I plus a number. When you look at LOGO! from the front,
you can see the input terminals at the top. Only analog input modules LOGO! AM2, AM2
PT100 and AM2 RTD have the inputs at the bottom.
Each output is identified by the letter Q plus a number (AM2 AQ: AQ plus number). In the
figure, you can see the output terminals at the bottom.
LOGO! can recognize, read and switch the I/O of all expansion modules regardless of their
type. The I/O are presented in the installation order of the modules.
The following I/O and flag blocks are available for creating your circuit program: I1 to I24, AI1
to AI8, Q1 to Q16, AQ1 and AQ2, M1 to M27, and AM1 to AM6. Also available are the shift
register bits S1 to S8, 4 cursor keys: C
LOGO! TD: F2, F2, F3, and F4 as well as 16 blank outputs X1 to X16. See the "Constants
and connectors (Page 103)" topic for more details.
The following applies to inputs I1, I2, I7 and I8 of LOGO! 12/24.. , LOGO! 24/24o and LOGO!
24C/24Co versions: If you use I1, I2, I7 or I8 in the circuit program, this input signal is digital.
If you use AI3, AI4, AI1, or AI2, the input signal is analog. The numbering of the analog
inputs is significant: AI1 and AI2 corresponded to I7 and I8 on the 0BA5 module. With the
addition of two new analog inputs for the 0BA6 series, these modules optionally use I1 for
AI3 and I2 for AI4. See the graphical representation in the topic on "Maximum setup
(Page 27)". Also note that you can also use I3, I4, I5, and I6 as fast digital inputs.
The illustration above with numbered AI inputs shows the conceptual usage of the inputs, not
the actual physical markings on the module.
, C
, C
and C
, four function keys on the
Manual, 10/2017, A5E01248535-AA


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