Siemens Sinumerik 840D sl Function Manual page 505

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"Selection of the velocity setpoint limit" control signals
MD36933: SAFE_DES_VELO_LIMIT contains 4 values.
The selection of one of these values is realized via the axis--specific PLC user
interface DB3x.DBX34.0 ...1.
Meaning of this interface:
Bit 0: "Setpoint limitation bit 0"
Bit 1: "Setpoint limitation bit 1"
Bit 0
= 0
= 0
= 1
= 1
"Axis is SI axis" status signal
DB3x.DBX70.4: "NCK Safety Integrated active".
Description of signals from the monitoring channel
SGA SBH/SG active
This signal is used to signal the drive monitoring channel the status of the SBH and
SG functions as follows:
0 signal:
1 signal:
SGA status, pulses are cancelled (drive only)
After the shutdown path test has been initiated using the SGE test stop selection
or if a limit value is violated with a resulting STOP A response, this signal is output
to indicate that the drive pulses have been internally cancelled.
For all axes, the signal is initialized with the value "1"; for non--SI axes, the signal
permanently stays at a value of "1" (see Chapter 6.1.1, "Shutdown paths").
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
Bit 1 active setpoint limiting factor
= 0 SAFE_DES_VELO_LIMIT[0]
= 1 SAFE_DES_VELO_LIMIT[1]
= 0 SAFE_DES_VELO_LIMIT[2]
= 1 SAFE_DES_VELO_LIMIT[3]
SBH/SG is not active
SBH/SG is active
Data Description
8.6 Interface signals
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