D6500 Computer Interface Manual
74-05313-000-G 10/16/97 Page 8 © 1988-1997 Radionics, Inc.
NOTE:
When the printer becomes inoperative and the signal is not acknowledged by the computer, the
receiver goes into the MANUAL mode. The signals must be manually acknowledged by pressing the
SLNC button twice: Once to silence the buzzer, and once to clear the message in the LCD display. If
the printer is not operating then the operator will need to write down each message as it is displayed
before pressing the SLNC button to clear the display.
Unsupervised Printer Always On
When using a computer system and an unsupervised printer the D6500 will go immediately into manual mode
if the computer system does not properly acknowledge a message (even if the printer is working). The SLNC
button must be pressed twice (see above) before the receiver will try to send the next message to the computer
system. The receiver buffers other messages until the display is cleared manually. If the printer runs out of
paper, is switched off, or malfunctions, the receiver continues to process messages automatically.
NOTE:
The
internal printer is supervised when configured for this mode of operation if INTERNAL PRINTER Supervision is
Yes
. The external printer is supervised when configured for this mode of operation if item EXTERNAL
PRINTER Supervision is
Yes
.
Logging Only, Printer/Computer
When programmed in this configuration, incoming messages will be sent to the printer and to the automation
system. The printer will be supervised if programmed accordingly. The automation port will also be supervised
if item
Handshake
is programmed as
Ack
.
4. The "Computer RS-232 Port" (D6515 MPU Terminator)
Depending on how item
Output Format
is set, there are three ways the D6500 can send information to the
COMP RS-232 Port on the MPU Terminator Card (see the
D6500 Operation and Installation Manual
). The user
can select either the D6500 mode or the SIA mode. All messages are presented to the RS-232 output in
standard ASCII format. These messages can be displayed on an automation computer, a CRT, or printed out
on an external printer. A detailed explanation of interpreting the internal printer
40-character mode messages
can be found in the
D6500 Operation and Installation Manual.
The D6500 accepts a set of four input commands through the computer RS-232 port. An automation system
would be a typical input device. Two of the four commands allow you to set the D6500's time and date. One
command allows you to switch line cards during listen in. The fourth command allows you to stop a listen in
session.
4.1 D6500 Mode Messages
The D6500 mode of the RS-232 output supports different message formats (types). The second byte of each
message specifies the type of the message (Type 1 or Type 3) and the method in which the other bytes should
be decoded.
For each message, Type 1 (Standard Digital) and Type 3 (Text Message) there is a one line printout on the
D6500 internal printer for each different message sent to the computer (not including retries). Depending on the
device selection, the D6500 internal printer will print the message with a computer trouble message. The
computer trouble message will NOT be sent to the computer.
Each message type consists of 22 bytes of information beginning with a header character (h) and ending with a
trailer character (t). Below is an example of the two message types available and describes each byte or
character in a D6500 message.
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