Specifications
6    Documentation Number 232BSS4-0812m 
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com 
B&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com 
Port Configurations 
  The 232BSS4 provides a dedicated UART to all five ports. This allows 
any port to be individually configured for baud rate, number of data bits, 
parity, and hardware (RTS/CTS) handshaking. Configuration of all the 
ports is done through the setup software. 
Baud Rate: 
Each port is configurable for the following baud rates: 
   1200 
   2400 
   4800 
   9600 
   19.2K 
   38.4K 
   57.6K 
   or 115.2 kbps 
Data Bits: 
   Each port can be configured for Seven or Eight data bits. 
Note: If the Master and Slaves are set up differently, the port set for 
Seven data bits cannot transmit the eighth bit. 
Parity: 
   Each port can be configured for Even, Odd, or No parity. Because 
the Master port uses a slightly different UART, it is not capable of 
receiving only seven bits, thus seven data bits with no parity is not 
allowed on the Master port. All other configurations are possible. 
Stop bits: 
Each port uses 1 stop bit. This value is currently fixed and can not 
be changed in the setup software. 
Hardware(RTS/CTS) Handshaking: 
Each port can be configured to hold data until its input handshake 
line goes high. On the Master port, pin four (RTS) would have to be 
held high by the host device in order for the 232BSS4 to send data. On 
the Slaves, pin eight (CTS) needs to be held high by the Slave device 
for the 232BSS4 to send data. The connected devices can prevent data 
from being sent from the 232BSS4 by holding their corresponding 
handshake lines low. 










