Signal Interconnection
6.1 Application 1
Guide for the SINUMERIK 840D sl machine configuring
Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0
6-3
Interconnection of the PLC input signals
● "Infeed ready" (NCU terminal X132.8)
The infeed is ready when the "1" signal is on.
Interconnection of the PLC output signals
● "ON/OFF1" of the infeed (NCU terminal X122.1)
The 0/1 edge activates the infeed. A lock with "infeed ready" (NCU terminal X132.8) is
desirable.
● "2. OFF3" for all axes (NCU terminal X122.2)
The "2. OFF3" will be forwarded to all axes of the NCU. The additional interconnection to
the individual NX components (NX terminal X122.2) means these axes also receive the
"2. OFF3" signal. The enable does not need to be made from a PLC. A fixed protective
circuit with 24 VDC is also possible.
Interconnection between NCU and NX components
● After activating the infeed, given correct operation, the "Infeed operation" state will be
attained and all axes (BI: p0864) will be enabled. This status must also be forwarded to
the NX components (NCU terminal X132.7 and NX terminal: X122.1).
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