Digital Security Controls PC1575 Manual de instalación descargar pdf (Pagina 71)

3.4 Notes for Section 3

When the panel is on-line with the computer but no uploading/downloading is being

performed, a command is sent to the panel every 20 seconds to tell the panel to

remain on-line. If the communication is terminated without first sending the hang-up

command to the panel, the panel will time out and go into the on-hook state. This

prevents the panel from staying on the line and thus disabling the communicator.

When sending the transmission, the modem will beep a number of times every 20

seconds. During that time any key presses will be stored in the keyboard buffer until

the transmission is finished.

After all [F3] and [F4] commands other than “Upload Selected Status” are executed,

the downloading software automatically uploads the current alarm status. If the panel

is in alarm, a window will appear on the screen and the computer’s speaker will

produce a siren-like sound. NOTE: This feature is not supported on the PC4000.

All communications will time out after 10 minutes of inactivity. If the computer and the

panel have accidentally been left on-line, the computer will automatically hang up the

call.

As soon as communication between the computer and the panel is established, the

software version number of the panel is displayed in the upper right-hand corner of

the screen, immediately to the left of the on-line timer. When communication is

terminated, this information and the on-line timer will disappear. For PC5010, PC5015,

PC5008, PC4020, PC4010, PC4000, PC1575/1580, PC1565-2P, PC1555/1565, and

PC580/585, the software version number is displayed in the bottom left-hand corner

of the screen.

The DLS-1 features a Transmission (Tx efficiency) Monitor to measure the quality of

the connection between the computer and the control panel. Transmission is

constantly monitored and the results are displayed as a percentage in the bottom-left-

hand corner of the screen, or by a bar graph in the middle of the screen for the

PC5010, PC5015, PC5008, PC4020, PC4010, PC4000, PC1575/1580, PC1565-2P,

PC1555/1565 and PC580/585 panels. The software keeps track of how many

commands have been sent to the panel, and how many commands failed and had

to be repeated. As a result, the quality of the communication can be found. This figure

is updated every time the computer sends a command to the panel, except for

transmissions used to maintain contact with the panel (NOP Instructions). If trouble

is encountered when communicating with a certain panel, this feature could be used

to help determine if the problem lies in the communication connection.

Every time a byte (character) is sent to the panel or received from the panel, an

indication is made on the bottom of the screen. An “S” character is used to represent

a byte that has been sent to the panel, and an “R” character is used to represent a

byte that is received from the panel. This feature is useful if you have an internal

modem and cannot view communication status lights, or if you have an external

modem that is located out-of-sight.

If any kind of panel-initiated call is used to communicate with the downloading

computer and the connection is not made, a failure to communicate trouble will not

be generated in the panel.

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Digital Security Controls PC1575 Manual de instalación Pagina 71

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