S-COM 6K Owner's Manual page 118

6K V1.02 03-16-91
return the pitch to normal after acknowledging the entry, not when the switch
goes back to the open state.
Other applications require that the condition not be latched. For example, a
115-VAC relay could be wired with its coil to the 115 VAC line at the
repeater site. A pair of SPST contacts could be wired in series between a
logic input and ground. When the relay is energized and the contact is
closed, the repeater is operating from AC power. When the relay is de-
energized and the contact is open, the repeater is operating from battery
power. The contact provides this information to the controller via a logic
input, and the controller informs the users by appending "BAT" (battery) or a
similar message to the repeater tail. Users should be told to limit their
transmissions when they hear the BAT message. When AC power is
restored, the controller would automatically turn off the BAT message.
This requires two macros, one to program "BAT" into the Dropout Message
and one to program (nothing) into the Dropout Message. Assume that
macro 0500 programs "BAT" and macro 0501 removes "BAT". To assign
these macros to Logic Input 2, enter:
(PW) 26 22 0501 *
(PW) 26 23 0500 *
(removes msg on Logic Input 2 hi-to-lo)
(programs msg on Logic Input 2 lo-to-hi)
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