Campbell Hausfeld Serial I/O Interface SDM-SIO4 - Manual (Page 11)

Section 1 . Introduction
1-5
1.2.6 Other Key Features
•
An internal lithium battery which retains configuration information
(estimated life 10 years)
•
A built-in system watchdog which will reset the processor in the event
of a crash caused by transients, etc.
•
A multi-tasking operating system allowing concurrent transmission and
receipt of data on all ports. This allows the receipt and processing of
data from all four serial ports concurrently at 9600 baud.
•
A built-in status LED to give an indication of system function on power-
up.