spliter rs232
If you can provide at least one additional control line you can use this scenario:
Transmission from 1 channel to 2-channels can be done without any problems.
Reception from 2-channels to 1 will require this additional control line and 3-state RS-232 transceivers or CMOS/TTL gates.
This control line will select which channel will be read from.
Any other alternative, such as stand alone spliter is just to complicated, as there is no information on which channel should be read.
Regards,
IanP