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Inactivity Time:
Port and Inactivity Time Setup Tips:
Slave Preamble:
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When the specified Port Time has elapsed, the 232BSS4
checks in sequence for other Slave ports with buffered data and
switches to them. If no other Slave ports need access to the
Master, the current Slave port will again be connected until
another Port Time has elapsed.
The Inactivity Timer tracks how long a Slave port has been
idle. The Inactivity Time is reset any time data is received on the
connected Slave port or sent out the Master Port. This way, if the
Master port is slower than the connected Slave port, the Slave
port is not considered inactive while waiting for the Master to
catch up.
Inactivity Time is set through the setup software. Times are set
in milliseconds and can be anywhere in the range of 0 to 65,000
(65 seconds). A value of zero for the Inactivity Time would give
the transmitting Slave port access to the Master until a Port
Timeout was reached or until a specific Turn Off command was
sent from the Master device.
Normally, the Inactivity Time should be set lower than the Port
Time. Setting a zero for either value allows the other to have full
control of port switching. Setting a value of zero for both timeouts
keeps the Slave port connected until explicitly turned off by the
Master device through the Turn Off all ports command.
Each Slave can be programmed to transmit a preamble to the
Master device when the Slave becomes connected. This tells the
Master device which new Slave is sending data. The preamble is
set in the setup software and can be any character sequence up
to four characters long. The preamble is sent to the Master
device whenever a port is selected through commands or when
the port will be sending data to the Master device because of an
automatic switch.
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
Documentation Number 232BSS41202 Manual
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