B&B Electronics Buffered Smart Switch manual Using the 232BSS4 as a Buffered Splitter/Combiner

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

232BSS4 +12 VDCMASTER PORT POWER

www.bb-elec.com Ottawa, IL 61350 USA

B&BelectMANUFACTURING COMPANYronics	A Port B Port C Port D
	Port

Terminal / HMI

Terminal / HMI

Terminal / HMI

Terminal / HMI

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.

16 Documentation Number 232BSS4-2907m

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