Subroutine 55 - Tail_Stock_T (Tailstock Control Program For Turning Machines) - Siemens SINUMERIK 808D ADVANCED Commissioning Manual

6.6.29

Subroutine 55 - Tail_stock_T (Tailstock control program for turning machines)

Purpose
Subroutine 55 is used to control forward or backward movement of the tailstock on a turning machine.
In JOG mode, press the "Tailstock" key to move the tailstock forward or backward. Pressing "Tailstock" moves the tailstock
forward, and one more pressing moves the tailstock backward.
In AUTO mode, you can use M20 or M21 to control the forward or backward movement of the tailstock.
Local variable definition
Inputs
Name Type
nodef BYTE
TailCtrl_K BOOL
SP_status BOOL
Outputs
Name Type
TailAdv_O BOOL
TailRet_O BOOL
AdvRet_LED BOOL
Assigned global variables
SP_RUNm BOOL
TailAdv_m BOOL
TailRet_m BOOL
Relevant PLC machine data
No. Value
14512 [17].2 1
0
14512 [21].1 0
1
Example for calling subroutine 55
Commissioning Manual
01/2017
Description
Reserved
Tailstock control key: press 1st time, advance; 2nd time, retract
Spindle status
Description
Tailstock advance output
Tailstock retract output
Tail advance/retract flag
M236.0 Indicate that the spindle is running
M229.2 Indicates that the tailstock is moving forward
M229.3 Indicates tailstock is moving backward
Description
Enable tailstock in turning
Disable tailstock in turning
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
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