Delta MMC120 - Manual (Page 75)

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Attempt to go beyond extend limit
This parameter error will occur whenever either a Go or Relative Move command
requests that the axis moves to a position beyond the EXTEND LIMIT . The
COMMAND POSITION will be set to the EXTEND LIMIT . The move will continue if
the bits for the Parameter Error are cleared in the AUTO STOP word. To remedy this
problem:
• Fix the control program to avoid issuing illegal commands.
• If the EXTEND LIMIT is set incorrect, fix its value.
Attempt to go beyond retract limit
This parameter error will occur whenever either a Go or Relative Move command
requests that the axis moves to a position beyond the RETRACT LIMIT . The
COMMAND POSITION will be set to the RETRACT LIMIT . The move will continue if
the bits for the Parameter Error are cleared in the AUTO STOP word. To remedy this
problem:
• Fix the control program to avoid issuing illegal commands.
• If the RETRACT LIMIT is set incorrect, fix its value.
Requested drive too large
This parameter error indicates that requested drive used by either an Open Loop
command or a move command using Quick Mode is too large. The maximum allowed
drive is ±12000 millivolts, although values this large can easily cause an Overdrive Error .
Invalid command value
This parameter error is set if either the Integral Drive or Null Drive is set to a value
greater than ±10000 with the Set Integral Drive and Set Null Drive commands.
Invalid step number given in "Start Events" command
Because there are only 256 event steps—numbered 0 to 255—any COMMAND VALUE
outside of that range with the Start Events command will generate this error.
Invalid scale value
This parameter error indicates that a SCALE was set to an invalid value: either 0 or
32768. If you are having a difficult time setting the SCALE parameter, you may want to
try using the Scale/Offset Calibration Utilities .