Siemens SINUMERIK 840Di Function Manual page 291

PLC pulse enable
Indicates whether the pulse enable from the PLC is available for the drive.
State 1: The pulses for the drive module have been disabled by the PLC.
State 0: Pulse enable for this drive is activated by the PLC.
Display corresponds to IS "Pulse enable" (DB31, ... DBX21.7).
References: /FB1/, A2, "Various Interface Signals"
Speed controller enable NC
This display indicates whether the speed controller for the drive has been enabled by the
NC.
State 1: Speed controller enable = OFF
State 0: Speed controller enable = ON
Rampup function generator quick stop
Status display for rampup function generator quick stop.
State 1:
State 0:
Display corresponds to IS "Ramp-up function generator quick stop" (DB31, ... DBX92.1).
References: /FB1/, A2, "Various Interface Signals"
DC link state (on/off)
The display contains the following drive warning:
State 0: DC link voltage = ON
State 1: DC link voltage is below warning threshold.
The warning threshold corresponds to machine datum:
MD1604 $MD_LINK_VOLTAGE_WARN_LIMIT (DC link undervoltage warning threshold).
Enable pulses
Message indicating whether the drive pulses have been enabled.
State 0:
State 1:
Display corresponds to IS "Enable pulses" (DB31, ... DBX93.7).
References: /FB1/, A2, "Various Interface Signals"
Diagnostic Tools (D1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Ramp-up function generator quick stop is not active for the drive.
Ramp-up function generator quick stop is active. The drive is stopped without a ramp
function with speed setpoint = 0 and without pulse suppression.
The drive module pulses are suppressed. The axis/spindle can therefore not be
traversed.
The drive module pulses are enabled. The axis/spindle can now be traversed.
2.4 Drive service display (for digital drives only)
Detailed Description
2-17