Opening serial port... Sending RTS... Sent "03 C9 0B 00 09 00 00 41 00 00 00 00 00 00 00 4A 00" Received "83 56 0B 00" (4 bytes), responding... Not responding to "83 56 0B 00" Received "83 09 0B 00" (4 bytes), responding... Sent "03 56 00 00" Sent "03 15 09 00 00 80 12 56 34 78 85 25 55 93 02" Received "83 56 09 00" (4 bytes), responding... Not responding to "83 56 09 00"