Siemens SINUMERIK 840 Planning Guide

11.92 5 Configuring
5.6 FB 121 Measure tool and workpiece
Signal chart for "Measure tool" (Identification bit 1 = 1)
The data is provided by FB 135. After measuring the tool, FB 121 receives either a positive or
negative acknowledgement from the measuring cycle depending on the result of the
measurement. In the case of a positive acknowledgement, identification bit 3 "Measure tool
prior to first application" of the measured tool is reset. In addition, identification bit 10 "Tool
disabled" is set in the case of a negative acknowledgement. Identification bit 1 "Measure tool"
is maintained.
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Initialization of
data interface
Status bit 7:
Job initiation (PLC)
from FB 135
Status bit 0:
Measure tool
Tool being
measured
Status bit 15:
Job initiation (NC)
Status bit 8:
Positive acknow-
ledgement from NC
Identification bit 3:
Measure tool at
first application
Status bit 15:
Job initiation (NC)
Status bit 9:
Negative acknow-
ledgement from NC
Identification bit 3:
Measure tool at
first application
Identification bit 10:
Tool disabled
© Siemens AG 1991 All Rights Reserved 6FC5 197-0AA40-1BP1 5–19
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)