Using The 232Bss4 As A Buffered Splitter/Combiner - B&B Electronics 232BSS4 Instruction Manual

Using the 232BSS4 as a Buffered Splitter/Combiner

The Auto Select and Initial Connection features of the 232BSS4
can be used to effectively create a data splitter. Data from the Master device
can be shared with multiple Slave devices. Any data coming from the
Slaves is buffered so that no data is lost. If the Slave devices already
include an address or identifier, no software changes are required.
Figure 2.1 shows a typical configuration allowing several serial
terminals access to the same host.
CPU / Controller
Figure 2.1. Multiple Terminals to a Host Controller
To configure the 232BSS4 as a four port splitter/combiner:
Set up the ports on the 232BSS4 to match the data format of the
connected devices. If the Slave devices stream data, the Master port
should be set to a higher baud rate than the slaves.
Set the switches to turn on the Auto Select feature.
Set the Port Timer to 0. If the Slave devices stream data, the Time
per Port may have to be set to a non-zero value.
Set the Inactivity Timer on all of the switches to somewhere
between 20 and 500 milliseconds, depending on the space
between data packets and the response time required to
each connected device.
Set the Initial Connections for all ports to receive from the
Master on start up.
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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
Documentation Number 232BSS4-0812m
Terminal / HMI
Terminal / HMI
Terminal / HMI
Terminal / HMI