D6500 Computer Interface Manual
74-05313-000-G 10/16/97 Page 7 © 1988-1997 Radionics, Inc.
Manual with Supervised Printer
In manual mode without computer, messages will be displayed on the D6500's LCD and printed on the printer.
The buzzer will sound until silenced by the operator (by pressing the SLNC button). The message will stay in
the display until the SLNC button is pressed a SECOND time. If the button is not pressed a second time to clear
the display, after about 45 seconds the buzzer will start again. The SLNC button must be pressed to silence the
buzzer and then pressed a second time to clear the display.
This mode may NOT be used if monitoring UL
certified alarm systems.
Automatic Operation With Supervised Printer
In the automatic mode without computer the receiver prints the message, displays the message in the LCD only
while printing and then turns on the buzzer if item
Buzz In Auto
is set to
Yes
. The buzzer stays on until the
silence button is pressed once by the operator. If multiple messages are received, the receiver displays and
prints them with the buzzer on. Only one press of the SLNC button is needed to silence the buzzer. If the printer
is not working, the D6500 goes into manual mode requiring two presses of the SLNC button. This enables the
operator to write down the message shown in the display and advance to the next message. When the printer
starts working again, the D6500 will resume working in the automatic mode.
WARNING:
When the internal printer is inoperative or turned off the red PNTR indicator on the MPU
Card is constantly "on". This indicates that the operator must use caution in
acknowledging signals with the SLNC button. Press the button ONCE to silence the
buzzer.
Write down the message
and press the SLNC button once more to advance to
the next message. Use caution when pressing the SLNC button, because it will clear
incoming messages if pressed too many times.
Supervised Printer Always On
When the computer is primary and the supervised printer is primary, the message is displayed on the LCD
while it is printing on the printer. At the same time the message is sent to the computer system. The buzzer is
on until either the operator presses the SLNC button OR the computer system sends an ACK (as programmed
in the D6500). If the receiver does not get or understand the acknowledgment within 7 seconds, the D6500
sends the message AGAIN to the printer and the LCD, then prints the message COMPUTER TROUBLE (this
takes 7 seconds).
If the receiver gets a NAK (as programmed in the D6500) the receiver retransmits the message to the computer
system up to two additional times. After three attempts the D6500 acts as if the message was not ACKed, it
proceeds to display the message on the LCD and print the message again on the printer along with a
COMPUTER TROUBLE message.
Printer Only If Computer Fails
When the D6500 is operating so that the printer only works when the computer system "fails", the printer and
buzzer will print/buzz if the D6500 does not receive an ACK from the computer system. When a message is
received, it is displayed in the LCD while it is sent to the computer system. If the computer system ACKs the
message the display clears and the D6500 is ready to send the next message. If the computer system does not
ACK within 7 seconds or sends more than three NAKs, the message is printed on the printer and the buzzer
starts. The LCD display clears when the message is printed to the printer. The buzzer can be silenced by
pressing the SLNC button once, even if multiple messages have been printed. If a subsequent message is
transmitted to the computer system and the computer system accepts the message (ACKs it) the receiver
buzzer silences.
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