Ncu Link - Siemens Sinumerik 840D sl Function Manual

Interaction with other functions

11.8 NCU link

11.8 NCU link
An NCU link involves a group of several NCUs to control a machine. In this case,
the interpolation function of the various SERVO axes is distributed across the
various NCUs.
The following definitions have been made when operating systems such as these
with safety functionality:
S An SPL must be used on each NCU.
S An SPL is used to evaluate the local PROFIsafe I/O and the control of the local
SERVO axes. The monitoring behavior of SERVO axes of other NCUs is
controlled by the SPL of the corresponding NCU.
S Safety--related statuses are exchanged between various SPLs via the safety--
related communication F_SENDDP/F_RECVDP.
S Errors in the SPL context (SPL CDC) or F communication context (PROFIsafe,
F_SENDDP/F_RECVDP) only act on the local SERVO axes.
S Errors from motion monitoring functions with stop responses on the IPO act on
the axes of the channel of the axis, which initiated this response. These
responses can also affect other NCUs.
11.9 Behavior of the Sim- -NCK systems
For simulation systems, a distinction is made in systems, which can be used to
verify
S that a part program can be executed
S the ability of the control to function -- including the I/O circuitry
Simulation to check that the part program can be executed
It is not expected that the safety functionality is effective for these systems (Linux--
based, Windows--based with PLC simulation). The machine data, with which safety
functionality can be activated, are therefore write protected.
The following machine data are write protected:
S $MN_PROFISAFE_MASTER_ADDRESS
Enable PROFIsafe master functionality
S $MN_PROFISAFE_IN_ADDRESS
Enable PROFIsafe input modules
S $MN_PROFISAFE_OUT_ADDRESS
Enable PROFIsafe output modules
S $MN_PROFISAFE_IN_ENABLE_MASK
Enable PROFIsafe input modules
11-808
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
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