Programming With Immediate Execution - Philips System 21 Quick Operating Manual

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).
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