Reading QR Codes with SIMATIC MV320 via ET200SP CM PtP
Article ID: 109474684, V2.0, 10/2021
2.3 The "DataPtP" Global Data Block
The following data is stored in "DataPtP":
• "portConfigSettings"
Connection parameters for the port configuration:
– port: hardware identifier from the device configuration
– protocol: Protocol > 0 for Freeport protocol
– baud: Data transmission rate of the port
– parity: Parity of the port
– dataBis: Bits per character
– stopBits: Stop bits
– flowCntr: Flow control
• "rcvPtPData"
Data received:
– "ringPlace"
Position in the ring buffer (in bytes) where the last received telegram was
written.
– "rcvLength"
Length of the last received telegram
– "rcvDataPtP"
The received telegram
• Output parameters for calling the function block in OB1
Figure 2-4
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