Siemens SIMATIC MV320

2 Engineering of the STEP 7 program
Reading QR Codes with SIMATIC MV320 via ET200SP CM PtP
Article ID: 109474684, V2.0, 10/2021
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Element
Symbolic name
Description
FB770
"PtPFreeport"
The "PtPFreeport" function block contains:
• The configuration of the ET 200SP
communication module CM PtP
"Port_Config"
• The "Receive_P2P" receive function, and
• The interpretation of the scan code
DB772
"DataPtP"
Global data block for storing
• connection parameters for the port
configuration
• the most recently read codes
DB770
InstPtPFreeport
Instance data block of the "PtPFreeport"
function block
System
blocks
R_TRIG
Sets tag at positive signal edge.
Port_Config
Dynamic configuration of the communication
parameters of the CM PtP communication
module
Receive_P2P
Receives messages from the CM PtP
communication module.
Receive_Reset
Clears the receive buffer of the CM PtP
communication module
Note
Calling "Port_Config" overwrites the settings of the hardware configuration.