Mode Of Operation; General Overview - Siemens SIMATIC S7-1200 Manual

3 Mode of Operation

Mode of Operation
3
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
Register
Tags
Data
blocks
10