42 Pamux User’s Guide
Jumper 6
This jumper has been disabled and thus has no effect.
Jumper 7 (Reset)
One of the control lines on the Pamux bus is the reset line. This line is used to clear all analog outputs
on a B6 station to zero scale, then to set the configuration of the B6 to input on all positions. Note
that the reset is not intended to be used to shut off outputs upon a system communication error.
Jumper 7 determines the polarity of the reset line, either active high or active low, as shown in Table
2-10. In general, it does not matter which polarity you select as long as you are consistent throughout
your Pamux system.
Table 2-10: B6 Reset Jumper
Reset Level Jumper 7
Active High In
Active Low Out
Jumper 8 (Watchdog)
A watchdog timer shuts down a process when the host computer goes off line. The watchdog
function of the B6 can be enabled or disabled with jumper 8. Since the B6 watchdog function is also
under software control, the watchdog register must be written to and the jumper must be removed
for the watchdog to be enabled.
Table 2-11 shows how jumper 8 affects the watchdog. For information on software configuration of
the watchdog, see Chapter 3.
Table 2-11: B6 Watchdog Jumper
Watchdog Jumper 8
Disabled In
Enabled Out
SYSTEM SETUP
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