Detailed description
2.1 Axis monitoring
Basic logic functions: Axis monitoring, protection zones (A3)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
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System variable Meaning
$VA_ENC_ZERO_MON_ERR_CNT[n,ax] Contains the current number of detected zero-mark
errors.
Power on and the selection/deselection of parking
positions triggers a zero reset; reset does not reset
the counter.
n: Encoder number
ax: Machine axis
Measuring systems with absolute encoders
System variable Meaning
$VA_ENC_ZERO_MON_ERR_CNT[n,ax] Contains the current position difference between the
cyclic position value held in the position control cycle
clock based on the incremental information from the
encoder and a new position value generated from the
encoder's absolute and incremental information.
Power on and the selection/deselection of parking
positions triggers a zero reset; reset does not reset
the counter.
$VA_ABSOLUTE_ENC_ERR_CNT[n,ax] Contains the current number of errors detected when
transferring the absolute values. Monitors the
reliability of the absolute value transfer process.
Power on and the selection/deselection of parking
positions triggers a zero reset; reset does not reset
the counter.
$VA_ABSOLUTE_ENC_STATE[n,ax] Determines the last error status of the absolute-
encoder interface.
n: Encoder number
ax: Machine axis
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