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PROFINET IO protocol
vacon • 21
Bit 0: Switching ON / OFF
This bit is used in combination with other bits to enable operation of the drive. When this bit is set
to 0 during operation, the drive performs a ramp stop.
Bit 1: Coast stop command
This bit is used to request a coast stop to be executed. When it is set to 0 during operation, the drive
performs a coast stop.
Bit 2: Quick stop command
This bit is used to request a quick stop to be executed. When it is set to 0 during operation, the drive
quickly ramps down to zero speed and stops.
Bit 3: Enabling of operation
This bit is used in combination with other bits to enable operation of the drive. When it is set to 0
during operation, the drive performs a coast stop.
Bit 4: Enabling of ramp generator
This bit is used in combination with other bits to enable operation of the drive. When it is set to 0
during operation, the drive quickly decelerates to zero speed.
Bit 5: Freezing of ramp generator
This bit can be used to freeze the setpoint value used by the drive. The value is frozen if this bit is
set to 0. If the bit is 1, the setpoint value provided by the master is continuously updated.
Bit 6: Enabling of setpoint value
This bit can be used to disable the fieldbus setpoint value. If this bit is set to 0, the option board
ignores the setpoint value by the master and instead uses a setpoint value of 0. During operation, if
this bit is set to 0, the drive decelerates to a standstill.
Bit 7: Fault acknowledge
This bit is used to acknowledge faults in the drive. When a rising edge (0 -> 1) is seen in this bit by
the option board, it requests the drive to acknowledge present faults. The functionality of this bit is
rising-edge sensitive only.
Bit 10: Control by PLC
This bit is used by the master to indicate that it is in control of the slave and that the commands sent
via fieldbus are valid.
During operation, this bit must be 1. If the drive is not operating and this bit is 0, the drive cannot be
started.
If the drive is operating, and this bit becomes 0, the option board freezes the process data provided
to the drive, and sets its state to FAULT. The drive reaction to this fieldbus fault depends on the drive
parameterization.
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
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