7.
PROGRAMMING WITH IMMEDIATE EXECUTION
In
the default position after power-on, System
21
executes incoming commands
immediately in the order
in
which they are programmed. This
is
the most simple
and straightforward way of programming, involving a limited number of commands,
of which the most important are given
below.
Function Message Description
System Reset "AID; RES"
Resets the total System
21
to the
power-on conditions.
Unit Reset
"AIDnnn;
RO
"
Resets slave with unit address " nnn"
to the power-on conditions.
Operating Mode
"AIDnnn;Mm"
Sets slave
with address
"nnn"
in
operating mode
"Mm"
(see operating
cards
of
the units).
Functional Command
"AIDnnn;cmd,
..
,cmd"
Sends
the commands
"cmd"
to the
unit with address
"nnn
".
Remarks:
1. The codes for the functional commands are unit dependent and can be found
on the operating cards of the units.
2. After a command requesting for the return of data,
System
21
must be
addressed as
talker to input the data into the controller.
3. A power-on system reset can
also be realised
by
pushing the RESET button
on
the master unit (not allowed during a running program).
7
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