Lenze ApplicationTemplate PackML (PLC Designer R3-x) - Manual (Page 19)

Lenze · ApplicationTemplate PackML · 1.0 EN - 05/2014
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What is the ApplicationTemplate PackML?
Elements of the ApplicationTemplate PackML
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One or several slave modules are always exactly connected to one higher-level master module.
However, the master only always communicates with one slave module. Slave modules cannot
communicate directly with each other, but only via the higher-level master module.
The higher-level machine module (master) communicates with the lower-level machine modules
(slaves) via data channels (channels). During the initialisation, the ApplicationTemplate PackML
generates a BaseChannel and an AppChannelData(ACD) structure.
[4-6] Exchange of information between the machine modules (L_ApplicationTemplate)
Bus (data): Exchange of control and state data (basic data Control/Status)
Basic functions in the ApplicationTemplate PackML are...
• ...the control / status information of the state machine.
• ...the alarm handling (error handling/error responses).
The ACD structure...
• ...serves to exchange application process data between machine modules.
• ...is a data structure for the definition of own process data.