TTY RESET Command

RCP performs continuous antenna consistency checks to guard against faults that could damage the mechanical system. When RCP detects such faults, it immediately enters a shutdown state.

warningWARNING You must determine and correct the cause of the shutdown before restoring system operation.
The reset command provides a restore capability that is more graceful than cycling the power by doing the following:
  • Always places the controller in its momentary unsafe condition regardless of whether RCP is shutdown when the command is received. This means you can use the command to exit from stuck conditions, even if RCP has not actually shutdown.
  • Causes a soft internal reset. The shutdown state is cleared and RCP8 continues running smoothly.
If RCP requires a more drastic restart, turn the power on and off to reboot the system.

Exit a Shutdown State From a Host Computer

To exit the shutdown state from a host computer, in the Antenna terminal, issue the reset command.

Exit a Shutdown State From a Local Computer

To exit the shutdown state from a local computer, type the local TTY command, reset.

The local RESET command may be followed by an optional numerical value (0 ... 10). This value represents the number of seconds that a shutdown is inhibited following the reset, with a default value of 1 second. This brief lockout period assists with the antenna's reposition so the shutdown condition can be remedied immediately following the reset. For example, if the antenna has contacted a limit switch, you can issue brief drive commands and attempt to move the antenna away from its limit.

RCP8 only shuts down when it has control of the antenna. When the external LOCAL status input forces RCP8 into local mode, it does not shutdown even if the velocity limits are exceeded or if the tachometer signals are inconsistent with angular positions. When control returns to RCP, you must ensure that no shutdown criteria is pending prior to the switch-over.

note The LOCAL status places no restrictions on exiting from the shutdown state - only on entering it. Therefore, the reset command is always effective.