Modbus: ignore spurious null bytes at beginning of frame
Modbus: ignore spurious null bytes at beginning of frame

nextsmsversion/macchina.io,nextsmsversion/macchina.io,nextsmsversion/macchina.io,nextsmsversion/macchina.io,nextsmsversion/macchina.io,nextsmsversion/macchina.io,nextsmsversion/macchina.io