In comparison here the debug result using the iOptronV3 driver @ 115200 baud:

INFO 11.212734 sec : Session log file /home/ralf/.indi/logs/2020-06-11/indi_ioptronv3_telescope/indi_ioptronv3_telescope_19:31:06.log
DEBUG 23.128309 sec : Connecting to /dev/ttyUSB0
DEBUG 23.134908 sec : Port FD 8
DEBUG 23.134972 sec : Connection successful, attempting handshake...
DEBUG 23.135036 sec : Initializing IOptron using :MountInfo# CMD...
DEBUG 23.135089 sec : CMD <:MountInfo#>
DEBUG 23.158937 sec : RES <0043>
INFO 23.159009 sec : iOptron v3 is online.
DEBUG 23.162370 sec : Configuration successfully saved for DEVICE_PORT.
DEBUG 23.172811 sec : Configuration successfully saved for DEVICE_BAUD_RATE.
DEBUG 23.174146 sec : Configuration successfully saved for CONNECTION_MODE.
DEBUG 23.180969 sec : Getting firmware data...
DEBUG 23.181028 sec : CMD <:MountInfo#>
DEBUG 23.207706 sec : RES <0043>
DEBUG 23.207827 sec : CMD <:FW1#>
DEBUG 23.239045 sec : RES <191018200113>
DEBUG 23.239154 sec : CMD <:FW2#>
DEBUG 23.270992 sec : RES <190722190722>
DEBUG 23.271120 sec : Getting guiding rate...
DEBUG 23.271142 sec : CMD <:AG#>
DEBUG 23.304032 sec : RES <5050>
DEBUG 23.304150 sec : CMD <:GUT#>
ERROR 28.307966 sec : Read Command Error: Timeout error
DEBUG 28.308881 sec : CMD <:GLS#>
DEBUG 28.346113 sec : RES <+032670500252210521>
INFO 28.346330 sec : Mount Location: Lat -82:59:39 - Long 9:04:30
DEBUG 28.354841 sec : Configuration successfully saved for GEOGRAPHIC_COORD.
INFO 28.357057 sec : Mount is unparked.
DEBUG 28.360207 sec : InitPark Axis1 0.00 Axis2 0.00
DEBUG 28.363965 sec : Setting Default Park Axis1 to 13.51
DEBUG 28.364195 sec : Setting Default Park Axis2 to -90.00
DEBUG 28.364641 sec : CMD <:GLS#>
DEBUG 28.394134 sec : RES <+032670500252210521>
ERROR 33.395948 sec : Read Command Error: Timeout error
DEBUG 33.396937 sec : CMD <:SUT0645175889000#>
ERROR 38.400156 sec : Read Command Error: Timeout error
DEBUG 38.400846 sec : CMD <:SG+120#>
DEBUG 38.431143 sec : RES <1>
DEBUG 38.431354 sec : CMD <:SLO+03330000#>
DEBUG 38.463479 sec : RES <1>
DEBUG 38.463617 sec : CMD <:SLA+17567892#>
DEBUG 38.479150 sec : RES <1>
INFO 38.479264 sec : Site location updated to Lat 48:47:59 - Long 9:15:00
DEBUG 38.482513 sec : Configuration successfully saved for GEOGRAPHIC_COORD.
DEBUG 38.483495 sec : CMD <:GLS#>
DEBUG 38.511236 sec : RES <+032670500252210511>
ERROR 43.516537 sec : Read Command Error: Timeout error
DEBUG 44.518520 sec : CMD <:GLS#>
DEBUG 44.547274 sec : RES <+032670500252210521>
ERROR 49.549844 sec : Read Command Error: Timeout error
DEBUG 50.551140 sec : CMD <:GLS#>
DEBUG 50.582085 sec : RES <+032670500252210521>
ERROR 55.583995 sec : Read Command Error: Timeout error
DEBUG 56.585207 sec : CMD <:GLS#>
DEBUG 56.616851 sec : RES <+032670500252210521>
ERROR 61.622151 sec : Read Command Error: Timeout error
DEBUG 62.623729 sec : CMD <:GLS#>
DEBUG 62.652939 sec : RES <+032670500252210521>
ERROR 67.658307 sec : Read Command Error: Timeout error
DEBUG 68.659624 sec : CMD <:GLS#>
DEBUG 68.687704 sec : RES <+032670500252210521>
ERROR 73.692976 sec : Read Command Error: Timeout error
DEBUG 74.694223 sec : CMD <:GLS#>
DEBUG 74.722693 sec : RES <+032670500252210521>
ERROR 79.724102 sec : Read Command Error: Timeout error
DEBUG 80.725693 sec : CMD <:GLS#>
DEBUG 80.758742 sec : RES <+032670500252210521>
ERROR 85.764088 sec : Read Command Error: Timeout error
INFO 86.296688 sec : iOptron v3 is offline.

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