Owners Manual
2800 Series Marquee
1.12 Assigning an Address to the Marquee (SW1)
It is important that you understand addressing before attempting to operate a network of 2800 marquees.
Addressing is a technique that allows commands to be directed to a particular marquee even though several
marquees are connected to the same serial communications cable.
Addressing is enabled by assigning a unique address character to each marquee connected to the serial
communications cable. There are 94 available address characters (SPACE, 20h to TILDE, 7Eh) that may be
used. Characters less than space are reserved for commands codes, and DELETE (7Fh) is reserved for wild
card addressing, described later in this manual.
To assign an address character to a 2800 marquee, locate the AB-2476-020 processor board and set the desired
address on the SW1 dip switch block using switches 1 through 7. Switch 1 sets the least significant bit of the
address character and switch 7 sets the most significant bit. Turning a switch ON selects a logic 1 bit, and
turning a switch off selects a logic 0 bit.
If you only have one marquee connected to the serial communications cable, you may safely disable the 2800
addressing feature by setting SW1 switches 1 through 7 to the OFF position.
NOTE: Some dip switch blocks label the OFF position as OPEN.
To assign an address to the marquee, pick a character, such as capital C, and lookup the hexadecimal ASCII
code number for that character in the chart provided in the back of this manual. The hexadecimal code number
for a capital C character is 43h. Set 43h on SW1, by turning switches 1, 2, and 7 ON and leaving switches 3, 4,
5, and 6 OFF. Example switch settings for address A (41h) through E (45h) are shown in the table below.
MSD LSD
40h 20h 10h 08h 04h 02h 01h Address
7 6 5 4 3 2 1 Character
ON OFF OFF OFF OFF OFF ON A (41h)
ON OFF OFF OFF OFF ON OFF B (42h)
ON OFF OFF OFF OFF ON ON C (43h)
ON OFF OFF OFF ON OFF OFF D (44h)
ON OFF OFF OFF ON OFF ON E (45h)
Page 10 PB-2149-335B
(12 Seiten)
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