Siemens SINUMERIK Series Function Manual

B3: Distributed systems - 840D sl only
2.2 NCU link
Extended Functions
86 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
2.2.1.6 Wiring the NCUs
The numerical sequence of the NCUs within a link group is defined in the NCUs using the
following machine data:
MD12510 $MN_NCU_LINKNO = <NCU number>, with NCU number = 1 ... max. NCU
number
Cabling
Starting from the NCU1, the NCU link modules should be wired up in the NCU number
sequence according to the following schematic: NCU(n), Port 0 → NCU(n+1), Port 1
1&8
/LQNPRGXOH
3RUW 3RUW 3RUW 3RUW
1&8
/LQNPRGXOH
3RUW 3RUW 3RUW 3RUW
1&8
/LQNPRGXOH
3RUW 3RUW 3RUW 3RUW
1&8OLQNYLD352),1(7 1&8OLQNYLD352),1(7
1&8 1&8Q
1&8
Figure 2-6 Wiring schematic, NCU link
2.2.1.7 Activation
The link communication is activated using the following machine data:
MD18780 $MN_ MM_NCU_LINK_MASK, Bit 0 = 1
Note
Activation time
It is recommended to activate the link communication only after complete commissioning of
the entire functionality on all participating NCUs has been done.

Siemens SINUMERIK Series Specifications

General

Axes Control	Up to 31 axes
Category	Control Unit
Manufacturer	Siemens
Series	SINUMERIK
Control Type	CNC
Communication Interfaces	Ethernet, USB
Operating Temperature	0°C to 45°C
Protection Class	IP20
Power Supply	24V DC
Display	Color TFT LCD