Rockwell Automation Publication MOTION-RM003I-EN-P - February 2018 415
Short Name Full Name Control Drive Description
STO Safe Torque Off No Yes Disables associated drive power structure.
SBC Safe Brake Control Yes No Engages safety brake.
SS1 Safe Stop 1 Yes Yes Monitors Category 1 Stop followed by STO.
SS2 Safe Stop 2 Yes No Monitors Category 2 Stop followed by SOS.
SOS Safe Operating Stop Yes No Monitor standstill condition for movement.
SMT
Safe Motor
Temperature
No No
Monitor motor temperature for
overtemperature.
SLT Safely-limited Torque No Yes
Prevents the motor from exceeding the
specified torque limit.
SLA
Safely-limited
Acceleration
No No
Monitor acceleration exceeding configured
limit.
SLS Safely-limited Speed Yes No
Prevents the motor from exceeding the
specified speed limit.
SDI Safe Direction Yes No Monitor for change in direction of travel.
SSM Safe Speed Monitor Yes No Monitor speed exceeding configured limit.
SLP Safely-limited position Yes No
Prevents the motor shaft from exceeding the
specified position limit(s).
SCA Safe CAM Yes No
Monitors whether the motor shaft position is
within a specified range.
SFX Safe Feedback Interface Yes No Scales and references safety feedback data.
The Axis Safety State, Axis Safety Status, and Axis Safety Fault attributes defined
below are based on the values read from attributes resident in objects associated
with the Safety Core and are used by the motion control system to monitor the
behavior of the Safety Core via the CIP Motion connection.
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