Yaskawa MotionWorks IEC - Manual (Page 178)

PLCopenPlus Function Blocks for Motion Control 2013-04-13 170
4370 The move could not be started because motion is prohibited.
MC_Stop.Execute might be held high, preventing motion. If
MC_Stop has control of the axis, no other function block can
override the "Stopping" state. Other blocks that try to cause
motion while MC_Stop has control of the axis will generate
this error. Also verify that the limit switches are not active by
checking the Global Variables for the axis. Also, a motion
block may be attempting to abort an MC_TorqueControl
move.
4378 The function block is not applicable for the external axis
specified
4381 Motion aborted due to axis alarm.
4413 The Stepper axis does not support the mode of motion
commanded
4625 Axis ID does not correspond to an axis configured on the
system. Verify the value of AxisNum matches a logical axis
number in the configuration. Tip: Make sure AXIS_REF is
properly declared as a VAR or VAR_GLOBAL in all relevant
POUs.
4641 Buffer mode does not correspond to a valid enumeration
value.
4642 Direction does not correspond to a valid enumeration value.
4658 Velocity parameter is less than or equal to zero.
4659 Acceleration is less than or equal to zero.
4660 Deceleration is less than or equal to zero.
4661 Torque is less than or equal to zero.
4668 The parameter number does not exist for the specified axis
57620 The structure size does not match.