HP RC3000 Manual Do Utilizador

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RC3000 Antenna Controller 
Chapter 3 
Detailed Operation 
 
 123  
 
3.3.2.5 Limits Maintenance 
 
AZIM CW:0  CCW:1  STOW:0 (0-OFF)  LIMITS 
ELEV UP:1   DN:1  STOW:1 (1- ON)  ACTIVE 
 POL CW:0  CCW:1  STOW:* 
<BKSP>MAKE LIMITS INACTIVE    <MODE>EXIT 
The limits maintenance screen shows the current state of each limit switch as sensed by the RC3000’s 
microcontroller.  The state of each limit is shown as 0 if off or 1 if on.  An * is displayed if the particular 
limit switch is not relevant for the particular mount (there is no POL STOW switch in the above example). 
<BKSP>MAKE LIMITS INACTIVE    <MODE>EXIT 
From this screen the user may inactivate software logic that prevents axis movement due to a limit switch 
by pressing the BKSP switch.  Note that inactivating limits should be done with caution.  Whenever limits 
are “INACTIVE” the alarm system will flash the following: 
** WARNING – LIMITS INACTIVE ** 
The limit switch logic may be returned to “ACTIVE” by pressing BKSP again. 
Note that even if software limit sensing is made “INACTIVE”, there are cases where movement of an axis 
may still be inhibited by hardware logic (sensing the state of limit switches) on the analog drive board.  
Good knowledge of how the various limit switches in a system are mechanized is required to determine if 
the limits inactive state will help in debugging any problems.