Lenze PLC Designer ApplicationTemplate (PLC Designer R3- Manual de usuario descargar pdf (Pagina 20)

What is the ApplicationTemplate?

Elements of the ApplicationTemplate

Lenze · ApplicationTemplate · 1.3 EN - 04/2013

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4.3.5 Communication between the machine modules

The machine modules (MM_xxx) communicate with each other via the MM_Machine machine

control module by means of the BaseChannel communication channel and the AppChannelData

structure.

• The communication channels provide for a bidirectional data exchange.

• The BaseChannel is defined as a structure in the ApplicationTemplate.

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 generates

a BaseChannel and an AppChannelData(ACD) structure.

[4-5] Exchange of information between the machine modules (L_ApplicationTemplateCounter)

BaseChannel: exchange of control and status data (Control/Status basic data)

The BaseChannel...

• ...contains the control / status information of the state machine.

• ...contains the error handling.

The ACD structure...

• ...serves to exchange application process data between machine modules.

• ...is a data structure for the definition of own process data.

• ...must always be derived from the L_EATP_ACD_Base

structure.

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Lenze PLC Designer ApplicationTemplate (PLC Designer R3- Manual de usuario Pagina 20