Mesa 7I76 - Non-Volatile Field I;O Parameters; Operate Mode Baud Rate; Watchdog Timeout

7I76 16
OPERATION
NON-VOLATILE FIELD I/O PARAMETERS
All non volatile parameters start with the letters NV. Non-volatile parameters are
stored permanently in the processors EEPROM and are copied to the volatile working
parameters at power-up. Because of this, non-volatile parameters only take affect after a
7I76 power cycle.
OPERATE MODE BAUD RATE
The operate mode baud rate default is 2.5 MBaud. This should not be changed
unless needed for non-standard applications. Baud rates are selected by writing an index
value to the NVBAUDRATE parameter. The index numbers for available baud rates are
as follows:
INDEX BAUD INDEX BAUD INDEX BAUD
0 9600B 1 19200B 2 38400B
3 57600B 4 115200B 5 230400B
6 460800B 7 921600B 8 1.25MB
9 2.5MB* 10 5MB 11 10MB
WATCHDOG TIMEOUT
The default watchdog period is 50 mS but can be set to different periods to suit the
application. Watchdog timeout units are mS. A watchdog timeout value of 0 will disable the
watchdog. The watch dog is a safety feature and should normally not be disabled nor set
to long timeout periods unless the consequences of loss of control of outputs is not
important. The non-volatile watchdog timeout is set via the NVWATCHDOGTIMEOUT
parameter. The working watchdog timeout is set with the WATCHDOGTIME parameter.
.