Clarity WN-5220-S User Manual page 98

Clarity Visual Systems
ASCII Alphanumeric characters (0-9, A-F for the Group setting and
0-9, A-F for the Unit setting) providing the means to control up to 256
combinations (00 to FF).
Multiple units can be controlled simultaneously by using the ASCII
character for the asterisk (*) in place of either or both of the IDT
monitor ID bytes. The (*) is a wild card character and provides a
means to control multiple units simultaneously. There are four types
of addressing that are supported.
All addressing is done in hex.
CMD - CMD is a 3 byte command character string. These command
strings are shown in the table listing the RS-232 command codes.
ASCII ETX - End of transmission character, = 03h
Description
End of Text
For example, to turn on a display with an address of 06, it would need
to receive the following command:
June 1999
90
1. Single address mode – the entire address is specified: 00,
01, 02, A2, AA, FF are valid examples. Only the single
display that matches this address attempts to execute this
command. An acknowledgement is sent in this mode.
Note: Do not set several displays to the same Unit and
Group address. If two displays have the same Group and
Unit ID, and a Single Address Mode command is sent to
that address, both units will send an acknowledgement at
the same time, causing some confusion in the data on the
RS-232 line.
2. Group address mode – the group part of the address is
specified, while the unit part of the address is not: 1*, 9*,
A*, F* are valid examples. All displays that match the
group number attempt to execute this command. No
acknowledgement is sent in this mode.
3. Unit address mode – the unit part of the address is
specified, while the group part of the address is set as
global: *2, *9, *F are valid examples. All displays that
match the unit number attempt to execute this command.
No acknowledgement is sent in this mode.
4. Broadcast mode – both group and unit are "*", so the IDT
part of the packet is "**". All displays attempt to execute
this command. No acknowledgement is sent in this mode.
Abbreviation
ETX
'
06 PON
Hex Decimal Character
03 3
Control
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