Edwards Signaling 5530M-485 - Manual (Page 5)

P/N 3100345 ISSUE 2 PAGE 5
The character has a value of 3 hexadecimal and is required at the end of
every message (1 byte)
Optional two byte Message Block checksum (2 bytes). Refer to Section 4.0 for
Block checksum calculation and verification. If checksum is not desired, must pad
these two bytes with two ASCII zeros 00.
3.2 BROADCAST COMMAND - 41
Send Format: 41
<41> In this command type, two byte ASCII ‘41’ replaces characters. This command
is issued to all units containing the identical field.
Tone/Message to be played by the unit. See tone chart for a list of available tones/
messages. Range ASCII 00-1F (2 bytes).
Time sequence for Tone/Message (00-99 seconds). For continous play of Tone/
Message, use ‘00’ in this data field. Range ASCII 00-99 (2 bytes)
Units matching this zone field will play Tone/Message indicated in the
data field for specified time indicated in data field. All other zones remain
in standby mode.
The character has a value of 3 hexadecimal and is required at the end of
every message (1 byte)
Optional two byte Message Block checksum (2 bytes). Refer to Section 4.0 for
Block checksum calculation and verification. If checksum is not desired, must pad
these two bytes with two ASCII zeros 00.
Unit Response: None
Example: 410530B00
Units programmed with Zone ‘B’ only to play Tone 05 for 30 seconds then shut off
automatically. Checksum characters not used in this example.
Note: do not use spaces between message characters in the above example.
3.3 POLL COMMAND and SET UNIT ZONE - 43
Send Format:
43<00>
Unit address, ASCII Range 00-1F (two bytes)
<43> Two byte ASCII Command denoting POLL Command or Zone Assignment (2 byte).
<00> Two byte ASCII ‘00’ used as protocol padding (two byes)
Programmable unit zone character. Range ASCII A-D. (1byte)
The character has a value of 3 hexadecimal and is required at the end of
every message (1 byte)
Optional two byte Message Block checksum (2 bytes). Refer to Section 4.0 for
Block checksum calculation and verification. If checksum is not desired, must pad
these two bytes with two ASCII zeros 00.
Unit Response: 43
Unit address, ASCII Range 00-1F (two bytes)
<43> Two byte ASCII Command echoed back from receiving unit (2 byte).
Unit’s current diagnostic state. Range ASCII A - D. (1byte)
A = Tone/Message is active and Local Power is absent
B = Tone/Message is active and Local Power is present
C = Tone/Message is not active and Local Power is absent
D = Tone/Message is not active and Local Power is present
Unit's programmed zone character
This character has a value of 6 hexadecimal and represents
acknowledgement of the received command with valid checksum (1byte).