AS-Interface

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Contents

Here youdiscover what you must note when using a LOGO! with integrated AS-Interface.

Converting circuit programs

Circuit programs containing AS-Interface inputs or AS-Interface outputs which were created for previous versions of the modular LOGO! are converted in the following operations:

If one or more AS-Interface inputs or outputs are cut out of an older circuit program and pasted into the circuit program for a modular LOGO!, the inserted I/Os are also converted in the new circuit program.

Conversion rules

The inputs Ia1 to Ia4 are converted to I13 to I16. If the target inputs for the conversion are occupied otherwise, the source is converted to the next free input with the lowest block number.

Outputs Qa1 to Qa4 are converted to Q9 to Q12. If the target outputs for the conversion are occupied otherwise, the source is converted to the next free output with the lowest block number.

After conversion, the Info window shows you which AS-Interface I/Os were converted to I/Os of the modular LOGO!. If the conversion is not compatible to your physical hardware structure, you must adapt the block numbers of the relevant I/Os via the block properties dialog.

Additional constants and connecting terminals

Note that LOGO! versions 0BA0 to 0BA2 do not distinguish between standard inputs and AS-Interface inputs. Due to the modular structure of the devices as of version 0BA3, the block number of a digital, analog or AS-Interface block is determined by the slot position of the expansion module.

AS-Interface inputs

The relevant LOGO! versions are also equipped with Ia inputs used for the ASi bus.

Modular LOGO! devices as of the series 0BA3 do not distinguish between normal inputs and AS-Interface inputs. The user determines the type of input based on the modules used and the order in which they are installed. This is why AS-Interface inputs are here displayed only as I input.

 

AS-Interface outputs

Outputs for the AS-Interface bus can be identified by the letter Qa (only available for the relevant LOGO! versions). Modular LOGO! devices as of the series 0BA3 do not distinguish between normal inputs and AS-Interface inputs. The user determines the type of the input, based on the inserted modules and the order in which they are installed. This is why AS-Interface outputs are only designated by the letter Q.