Subroutine 33 - Emg_Stop - Siemens SINUMERIK 808D ADVANCED Series Commissioning Manual

6.6.10

Subroutine 33 - EMG_STOP

NOTICE
Program safety
Check whether this subroutine complies with the relevant safety requirements or not.
Purpose
Subroutine 33 handles emergency stop. Pressing down the Emergency Stop button produces an emergency stop alarm and
disables the drive enable signal (DB380x.DBX2.1). If you want to clear the emergency stop alarm, you must first release the
Emergency Stop button and then press the RESET key on the MCP.
This subroutine activates the alarm below:
Alarm 700016: DRIVE NOT READY
Timing diagram
Local variable definition
Inputs
Variable Type
nodef BYTE
E_KEY BOOL
HWL_ON BOOL
SpStop BOOL
NO: Normally Open
NC: Normally Closed
This input can come from signal OVlmt of subroutine 40, and triggers emergency stop when the hardware limit appears.
1)
Before the drive system disables the control enable signal, the PLC detects the spindle stop signal from NCK to ensure
2)
that the spindle has stopped.
Outputs
Variable Type
NC_Ready BOOL
Relevant PLC machine data
No. Value
14512 [18].4 1
0
14512 [21].1 0
1
148
Description
Reserved
Emergency stop key (NC)
Any one of the hardware limit switches is active (NO)
Spindle stopped (NO)
2)
Description
NC being in the cyclic state and able to enable the drive
Description
Spindle has an external stop signal
Spindle has no external stop signal
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)
Commissioning Manual
6FC5397-4EP10-0BA8, 07/2018