Siemens SINUMERIK 840 Planning Guide

11.92 5 Configuring
5.15 FB 156 Tool life monitoring/prewarning limit
Signal descriptions
BEAR Machining
This parameter must have a "1" signal during machining with the active tool.
Positive-going edge: Initiation of tool life processing (recognized only if AKT="0").
Negative-going edge: End of tool life processing; the current values for tool life and
calculated value are stored.
VWG Prewarning limit
"1" signal: The prewarning limit is taken into account.
"0" signal: The prewarning limit is not taken into account.
This input parameter determines whether identification bit 0
"Prewarning limit reached" is set in the second identification DB
(DB 152).
SPER Disable
"1" signal: On expiry of the tool life (tool life<=0), the active tool is
disabled immediately by setting identification bit 10 "Tool
disabled" in the second identification DB (DB 152).
"0" signal: On expiry of the tool life, identification bit 6 "Disable tool at end
of program" is set in the second identification DB.
A-NR Job number (Range: 1...4)
If the tool lives of several tools are to be determined simultaneously, FB 156
"STAZ/VWG" is assigned a separate job number for every active tool (e.g. for every
spindle, every turret).
MANR Magazine number (Range: 0...16 for SINUMERIK 880/880 GA2 and 1...4 for
SINUMERIK 840/840C)
Specification of the number of the magazine containing the data of the active tool.
MANR = 0: Refers to a spindle; the data are stored in the tool buffer.
MANR = 1...16: Refers to a turret; the data are stored in the specified magazine
(in the case of SINUMERIK 840/840C, only MANR = 1...4 is
permissible).
PLSP Location/spindle
Locator number (if MANR = 1...16 for SINUMERIK 880/880 GA2 and
1...4 for SINUMERIK 840/840C)
Spindle number (if MANR = 0) spindle number 1 or 2 only
NSBY Interface byte
Data word address of the interface byte of DB 36 for transmitting data NC PLC via
FB 61/62.
SPNR Memory number
(Range: 8 to max. number of P memories (MD13) minus 1)
SPNR = 8...14: The tool data are stored in two consecutive P memories in the
NC. The number corresponds to the first P memory.
Example: SPNR=11: The P memories P11 and P12 are assigned
P x = Tool life
P x+1 = Prewarning limit
K Time weighting factor
(Range: 1...99, format: fixed-point)
Down-counting of tool life in minutes every k
*
6 seconds:
© Siemens AG 1991 All Rights Reserved 6FC5 197-0AA40-1BP1 5–69
SINUMERIK 840/880 (PJ)

Siemens SINUMERIK 840 Specifications

General

Control Type	CNC
Axes	Up to 31
Display	TFT color display
PLC	Integrated
HMI	SINUMERIK Operate
Communication Interfaces	Ethernet, PROFIBUS, PROFINET
Type	CNC system
Programming Languages	G-code
Max Number of Channels	10
Operating Temperature	0 to 45 °C
Relative Humidity	Up to 95% (non-condensing)
Protection Class	IP54 (front panel)