Lenze ApplicationTemplate PackML (PLC Designer R3-x) - Manual (Page 16)

What is the ApplicationTemplate PackML?
Elements of the ApplicationTemplate PackML
16
Lenze · ApplicationTemplate PackML · 1.0 EN - 05/2014
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
4.3.2 Machine modules (MM)
The overall functionality of the automation system is structured in a modular manner in the
ApplicationTemplate PackML. This means that every subfunction of the machine is included in one
of the machine modules. Due to the modular structure, individual (or multiple) subfunctions of a
machine can be reused. Advantage: The respective function does not have to be recreated for
further machine parts.
• A machine module represents the function of a machine part; for instance a conveying belt, or
a cross cutter.
• The overall functionality of, for example, a bag form, fill, and seal machine, contains the "Cross
cutter" and "Transport unit" subfunctions. The two subfunctions are to be converted to a
separate machine module each.
Machine module in the ApplicationTemplate PackML
[4-3] Structure of a machine module
• Every machine module contains the BaseChannel ("Base Data") which serves as a data
channel for the basic functions of the ApplicationTemplate PackML.
• The basic functions of the ApplicationTemplate PackML are the State machine and the Error
handling.
Every machine module has an AppChannelData structure (ACD structure). An ACD structure can be
defined in a machine module if necessary.
• Via the ACD structure, data are provided to/received from the higher-level machine module.
• Via the ACD structure, process data can be exchanged between the user's own module
applications.
A machine module (MFB) always contains at least one module application (MAP). Up to three MAPs
per MFB are possible.
• Via the MM_IO, MM_Par; MM_Vis, MM_PD structures, the module application (MAP) is to be
connected to the "outside world" (the respective sub-function of the automation system).
• By means of the MM_IO structure, the inputs/outputs of the terminals/the fieldbus are to be
connected.
• The MM_Par structure contains all variables that are to be managed by the recipe manager.
• The MM_Vis structure contains all variables that can be controlled or are to be displayed via an
external visualization.
• The MM_PD structure contains all persistent variables.