Siemens SIMATIC S7-1200 Handmatig - Pagina 10

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3 Mode of Operation

Mode of Operation

3.1

General overview

Figure 3-1

of the TIA Portal project.

Figure 3-1

MAIN

[OB 1]

ReadWrite

The core functionality includes the function block "EbmPapst".

This block is called in the cyclic organization block "Main".

The interfaces of FB "EbmPapst" are fed from the data blocks



"Register" (this DB contains the register structure and the order of the data to

be read) and



"Tags" (this DB contains the tags to parameterize and operator the FB

"EbmPapst").

The following system blocks are called in the FB "EbmPapst":



"Modbus_Comm_Load" [FB640] to initialize the Modbus RTU communication



"Modbus_Master" [FB641] for data exchange of the S7-1200 as the master

with the ebm-papst fans as the slave

Controlling several fans (ebm-papst) via Modbus RTU

Entry ID: 109476801,

V2.0,

shows the chronological sequence of the block calls in the control part

EbmPapst

LGF_

Impulse

User program

09/2018

Send_

Config

[FB611]

Modbus_

Comm_Load

[FB640]

Receive_

Config

[FB612]

Send_P2P

[FB613]

Modbus_

Receive_

Master

P2P

[FB641]

[FB614]

Receive_

Reset

[FB617]

SERIALIZE

[FC890]

System blocks