GE Druck DPI 740, User Manual

Page: 48 / 72

K0200 Issue No. 1
40 DPI 740 User Manual
6.2 General Command Format
The instrument is controlled by a sequence of letter codes,
some commands require numeric values to follow the letters.
The correct number of parameters must be sent for the
particular command. The instrument accepts upper-case or
lower-case letters.
Commands should be in the form:
<start>ddssxx:<CS><terminator>
where
<start> is the start of a command block indicator that can be
* or # character. The * character causes all command
block data to be echoed around the network. The #
character suppresses the echoing of the data block
and can be used for commands such as AA -
automatic addressing.
dd is a two digit destination address 00 to 99
ss is a two digit source address 00 to 99
xx is a two character command. This can be followed
by additional data, a number can be added to this
command to select a channel.
<CS> is a block checksum and takes the form: NN where
NN is a two digit checksum that is the modulo 100
sum of all the ASCII codes of the character in the string
including the `:`.
Note: This checksum feature can be disabled so that
the instrument does not use checksums, in which
case the checksum must not be sent. When the
checksum feature is enabled, commands are
only interpreted if the checksum is correct. An
error is reported if an incorrect checksum is
received.
<terminator>is the string termination characters
<CR><LF>