Specifications
Documentation Number 232BSS4-0812m    5 
&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 
Chapter 2: OPERATION 
Symbols and Conventions 
  Throughout this chapter of the manual, the following symbols and 
conventions will be used to clarify what type of data we are addressing. 
  Items enclosed in {brackets} will denote one byte. 
  A character in “quotes” will normally denote a printable ASCII 
character. A byte described in ALL CAPS is the ASCII description 
of a non-printable character. The abbreviation dec will denote a 
decimal value. The lower case letter h will be used to show a Hex 
value. 
  Items in italics are optional items only used in certain 
configurations. The instances when these items are required will be 
explained in the text. 
LED Indicators 
  The 232BSS4 has five LED indicators. The first, labeled “+12 VDC 
POWER” indicates that power is applied to the switch. The other four, 
labeled “PORT A” to “PORT D” indicate which Slave port is currently 
selected to transmit to the Master. 
  In Smart Switch Only mode, the port LEDs indicate which port was 
selected through the Select Port command. In Auto Select mode, the port 
LEDs indicate which port is currently sending to the Master. No indication 
is provided to display which Slave port is currently receiving from the 
Master. 










