Dugan Model E User Guide
ASCII Remote Control
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The second format requires two extra bytes. The first byte is 0xFE (254 in decimal) and
is the only 8th-bit-set number accepted by the Model E. The second extra byte is the
check-sum
byte that is the lower 7 bits of the 8-bit sum of all the bytes from 0xFE to
<CR>, inclusive.
The two formats may be mixed. Whenever 0xFE is detected, the E automatically
switches to the extended format. When an extended format packet is sent, the reply is
also in the extended format. All white spaces and tab characters are automatically re-
moved before parsing and command strings can be in either upper or lower cases. The
following characters result in the same command:
NE3,1
Ne 3, 1
n E3, 1
The Model E replies to every ASCII command. The format of the reply echoes the com-
mand. For example, if
NE3,1
is sent from the user, the reply from the Model E when
the command is successfully executed is:
NE3,1
If
NE3,
is sent from the user, the reply is
NE Syntax error,
indicating a syntax error in
the command (parameter value missing).
6.2.2
Commands
This section describes all the available command strings for both formats.
Each command has the form:
<command> <channel>, <value>
OR
<command> <value>
The following examples are in plain ASCII text format but also apply to the extended
format. We use spaces for clarity but they are not necessary and are not present in the
replies. When a channel is specified, a comma is required in the command string.
NOTE: ASCII commands can be used simultaneously with the Web Control Panel.
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