Unreachable serial port configuration

epsilonrt / libmodbuspp

Much more than a C++ wrapper for libmodbus

https://epsilonrt.fr/modbuspp

GNU Lesser General Public License v3.0

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Closed zkasa closed 3 years ago

zkasa commented 3 years ago

Hi! It is not possible to get configuration '9600 8 N 1'. E parity is always used.

epsilonrt commented 3 years ago

Hi, As specified in the MODBUS OSL standard https://modbus.org/docs/Modbus_over_serial_line_V1_02.pdf, page 12, if no parity, there must be 2 stop bits in order to guarantee that the duration of a character is 11 bits.