Beck, R&J ELECTRIC ACTUATORS FOR INDUSTRIAL PROCESSCONTROL 11-1_9 Manuale Utente

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67
DCM-2 SERIAL INTERFACE
 
Commands
COMMANDS AND ARGUMENTS
 
Commands can be used for a variety of functions 
including changing the operating configuration of 
the drive, verifying operation settings, calibration 
and accessing diagnostic information.  There are 
essentially four different types of commands:
  1.  D u a l - p u r p o s e   c o m m a n d s .    T h e s e 
commands can be used to either modify 
drive configuration settings or display the 
settings already set in the drive.  In order 
to set or make a change to the settings, 
the command requires an argument (n).  If 
the command is used for display purposes 
only, the argument is omitted.  Examples of 
these commands include "dead band" and 
"demlos".
  2.  Display only commands.  These commands 
are used to display diagnostic or operating 
information like present signal values.  No 
arguments are required.  Examples include 
the "stat" command and the "signals" 
command.
  3.  Set only commands.  These commands 
serve only to make a parameter change.  
Typically, they apply to the drive calibration.  
This type of command requires an argument, 
but unlike dual-purpose commands, they 
return an error message when entered 
without an argument.  Examples include the 
"demis" and "posis" commands.
  4.  Execute action commands.  These 
commands serve to reset, enable or disable 
features and do not require an argument.  
Entering these commands produces an 
immediate action.  Examples include the 
"revert" and "torqen" command.
   The available commands are listed on page 68 
and each is described in more detail on pages 69 
through 72.  The command description explains the 
use or uses of the command, while the argument 
column describes the applicable arguments 
for those commands that require them.  In the 
command tables, arguments are denoted as n.  
Note that the commands described as "sets and/or 
displays" signify dual purpose commands that can 
be used with or without an argument for setting or 
verifying configuration settings.