Siemens SINUMERIK 808D ADVANCED Series Commissioning Manual page 153

Name Type
_2LMTn BOOL
_2REF BOOL
_3LMTp BOOL
_3LMTn BOOL
_3REF BOOL
_5REF BOOL
The hardware limit + is used for the input if there is only one hardware limit switch or when the hardware solution is
1)
used.
Outputs
Name Type
OVlmt BOOL
Assigned global variables
SP_CMD
Relevant PLC machine data
No. Value
14512 [18].6 1
0
14512 [18].7 1
0
14512 [20].1 0
1
14512 [21].1 0
1
When setting bit 1 to 1, make sure that the speed control mode is active.
1)
Note
By default, the value of MD30350 is 0, indicating that the NC will run in the real axis mode. When performing the axis control
related operations on a stand-alone controller without any connection to the motor or drive, you need to set MD30350 to 1
for each axis, which indicates that the axis will run in the simulated state and thus the PLC will not detect the drive ready
signal; otherwise, an alarm will be thrown out, indicating axis enable missing.
Example for calling subroutine 40
Commissioning Manual
6FC5397-4EP10-0BA8, 07/2018
Description
Negative hardware limit switch of 2nd axis (NC)
Reference cam of 2nd axis (NO)
Positive hardware limit switch of 3rd axis (NC)
Negative hardware limit switch of 3rd axis (NC)
Reference cam of 3rd axis (NO)
Reference Cam of 5th axis (NO)
Description
Any of the axis over hardware limits
M138.1
Description
Overtravel employs the hardware solution
Overtravel employs the PLC solution
Each axis has only one hardware limit switch
Each axis direction has an hardware limit switch
Disable by pressing the spindle stop key
Disable when detecting the standstill speed
Set I0.0 to I2.7/Q0.0 to Q1.7 as the standard I/O wiring in the default PLC
Set I6.0 to I8.7/Q4.0 to Q5.7 as the standard I/O wiring in the default PLC
1)
Spindle start command (CW or CCW)
1)
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