Appendix
A.3 Connection of serial devices via Freeport protocol
SIMATIC RF120C
50 Operating Instructions, 02/2021, C79000-G8976-C328-03
Configuring the optical handheld readers
To allow the operation of the optical handheld readers via the RS232 interface with the
communication module you need to configure the handheld readers appropriately. This
configuration can be achieved quickly and simply by scanning the relevant codes.
• SIMATIC MV320 (≤ AS 2)
• SIMATIC MV320 (≥ AS 3)
By scanning the code, all relevant parameters for the communication between the
communication module and the optical handheld reader are set:
• Interface: RS-232
• Transmission speed: 115.2 kBd
• Data bits: 8
• Parity: None
• Stop bits: 1