32
Selections for the
serial communication
port
When the annunciator system is composed of
several interconnected units, the flash sequence
of the visual indicators can be synchronized.
One of the annunciator units is defined as the
master (1), thus delivering a synchronizing pulse
to all the other interconnected annunciators (0).
If the annunciator units are connected to a
higher level system, the synchronizing pulses for
the annunciator units are obtained automati-
cally.
The parameter selector push-button
↓
is repeat-
edly pressed until the LED marked MODULE
starts glowing. The cursor is then moved to the
fourth digit from the left of the display with the
cursor control push-button
→
. The fourth digit
corresponds to one of the following functions:
0 = sync-pulse receiver, when not connected to
a higher level system
1 = sync-pulse transmitter, when not connected
to a higher level system
2 = 9600 bits/s serial communication
3 = 4800 bits/s
4 = 2400 bits/s
5 = 1200 bits/s
6 = 300 bits/s
The data value selector push-button
↑
is repeat-
edly pressed until the function aimed at is
reached. The selected function is then stored in
the parameter memory by pressing the enter
command push-button.
If the annunciator unit is connected to a higher
level system by means of a serial communication
link or if the annunciator unit has been pro-
grammed to receive an externally generated
synchronizing pulse and no synchronizing pulse
is received within a time period of one minute,
a visual indication in the form of a blinking
decimal point will be switched on in the right-
hand lower corner of the display. When no serial
communication link is connected to the annun-
ciator unit, the annunciator unit must be pro-
grammed to function in the sync-pulse receiver
mode.
NOTE!
The parameters need not to be stored in the
parameter memory one by one, but they can be
stored all together at the same time, when they
have been given their specified values in the
display.
A summary of the programming parameters
(figure 32) and empty parameter tables (figure
33 and 34) is given on the following pages.
