Startup; Activation; Memory Configuration; Parameterizing The Digital On-Board Outputs - Siemens SINUMERIK 840D sl Function Manual

TE8: Cycle-independent path-synchronous switching signal output - 840D sl only

20.3 Startup

20.3 Startup
20.3.1

Activation

Before commissioning the technological function, ensure that the corresponding compile cycle
has been loaded and activated (see also Section "TE01: Installation and activation of loadable
compile cycles (Page 549)").
Activation
The "Cycle-independent path synchronized switching signal output" technology function is
activated via the following machine data:
MD60948 $MN_CC_ACTIVE_IN_CHAN_HSLC[0], Bit 0 = 1
Note
The "Cycle-independent path-synchronized switching signal output" is available only in one
channel of NC.
20.3.2

Memory configuration

The technological function requires additional data in the NCK-internal block memory. The
values must be increased for the following memory configuring channel-specific machine data:
● MD28090 $MC_MM_NUM_CC_BLOCK_ELEMENTS += 1 (number of block elements for
compile cycles)
● MD28100 $MN_MM_NUM_CC_BLOCK_USER_MEM += 10 (size of block memory for
compile cycles (DRAM) in KB)
20.3.3

Parameterizing the digital on-board outputs

Parameter assignment
A digital output from the local I/O is required for the switching signal.
For this, at least 1 digital output byte must be defined through the following machine data:
MD10360 $MN_FASTIO_DIG_NUM_OUTPUTS ≥ 1 (number of active digital output bytes)
References
A full description of the parameterization of a digital output can be found in:
● Function Manual, Extended Functions, Digital and Analog NCK I/Os (A4)
736
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Special functions