Features:
This apapter converts the 'serial the logic levels' of most BrightSigns to 'True' RS232 levels (negative and positive voltages).
Jumpers provided for 'Master/Slave' connection. IF the RS232 device is the 'Master' then the BrightSign is the 'Slave'. In this event the TX/RX to the RS232 device have to be swapped. These jumpers eliminate the need for a 'Cross-Over' or 'Null-Modem' cable.
When these jumpers are set correctly, both the TX pin and RX pin of the DB9 connector will have negative voltages in standby (board and RS232 device are both powerer)
Recently, a customer was perplexed because his system kept crashing. The RS232 device was 'echoing' messages back to the BrightSign but there was no way to handle these messages because of the software (not BrightAuthor) used to interface the BrightSign to the RS232 device. A jumper to select 'O' (Open) or 'C' (Closed) for the RX line to the BrightSign. Moving this jumper to the 'O' position stopped the crash of the system when sending messages to the RS232 device.
Note: See 'About Serial' if you don't know if you have RS232-C or Legacy RS232 signal levels coming from the BrightSign!
Note: If you need female DB9 and don't want to mess with a 'gender changer' adapter, we can built the adapter with the female connector. It will be mounted to the bottom of the board and the 'Master/Slave' jumpers will correct the TX and RX connections if needed.
Last Revised: 08/27/2024