N3: Software cams, position switching cycles - only 840D sl
8.3 Output of cam signals
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
547
8.3.2 Output of cam signals to PLC
Output to PLC
The status of the cam signals for all machine axes with activated software cams is output to
the PLC.
The status is output in the IPO cycle and is transferred to the PLC asynchronously.
Minus cam signals
The status of the minus cam signals is entered into the following NC/PLC interface signals:
DB10 DBX110.0 to 113.7 (minus cam signal 1 to 32)
Plus cam signals
The status of the plus cam signals is entered into the following NC/PLC interface signals:
DB10 DBX114.0 to 117.7 (plus cam signals 1 to 32)
Note
If no measuring system has been selected or NC/PLC interface signal DB31, ... DBX2.0
(cam activation) is set to 0, then the following NC/PLC interface signals are also set to 0:
• DB10 DBX110.0-113.7 (minus cam signals 1-32)
• DB10 DBX114.0-117.7 (plus cam signals 1-32)
• DB31, ... DBX62.0 (cams active)
8.3.3 Output of cam signals to NCK I/Os in position control cycle
Signal output in position control cycle
For cams assigned to an HW byte via machine data MD10470 to MD10473 (see Section
"Hardware assignment"), the signal is output in the position control cycle.
The four onboard outputs on the NCU and a total of 32 optional external NCK outputs are
available as the digital outputs of the NCK I/Os (see Section "A4: Digital and analog NCK
I/Os for SINUMERIK 840D
sl (Page 25)").
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