Module-To-Module Communication (Mtm) - Siemens SIMATIC ET 200SP IM 155-6 PN/2 HF Manual

Product overview
2.2 Functions
2.2.18

Module-to-Module Communication (MtM)

Introduction
Module-to-Module Communication (MtM) offers the following advantages:
● Improved performance during transmission of data by bypassing the IO controller.
● Deterministic cycle times
● Cost-effective, high-performance solutions for applications where the performance of a
specific technology module is not required.
Module-to-Module Communication (MtM)
Module-to-Module Communication (MtM) enables direct exchange of data between specific
IO modules within a station via the interface module. This enables you to move small and/or
time-critical tasks to the IO module. You achieve better performance while reducing the load
on the CPU.
With Module-to-Module Communication (MtM), the interface module copies the input data of
an IO module directly to a different IO module via the ET 200SP backplane bus. The IO
module (data sink) carries out application-specific processing of the data.
You configure the data source and data sink for Module-to-Module Communication (MtM) in
the hardware configuration of the respective output module. Programming of the user
program is not required in the variant for Module-to-Module Communication (MtM).
Note
The preparation of the input data in the output module (mapping) and the output of the data
to the outputs are application- and technology-specific.
Example: The DQ 4x24VDC/2A HS digital output module supports
• the application cam control with Module-to-Module Communication (MtM) under the
designation DQ 4x24VDC/2A HS MCC MtM
Additional information can be found in the manuals of the corresponding IO modules.
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Interface module IM 155-6 PN/2 HF (6ES7155-6AU01-0CN0)
Manual, 10/2018, A5E03915895-AH