Ncu Replacement - Siemens SINUMERIK 840D sl Function Manual

Commissioning
The NCUs are assigned bus address 13 in the delivery state. Every NCU on the bus must be
allocated its own, unique bus address.
Addresses are assigned in:
● HMI: NETNAMES.INI file
● NCK: In the menu "Commissioning/NC/NCK address"
● MCP: Switch... (address and possibly baud rate, see also /IBN/)
Power up with HMI Embedded/HMI Advanced
See Section "Several operator panel fronts and NCUs with control unit management
option/power up".
2.3.5

NCU replacement

The procedure for NCU replacement or configuration of an additional NCU is similar to that
for commissioning (see "Power up").
Variant 1
1. Establish 1:1 connection between PCU and NCU
2. Power up HMI on NCU with bus address "13" (see above)
3. Enter new NC address via the Commissioning/NC/NC address operating area and boot
4. Rewire bus for M:N operation
Variant 2
1. The NCU which is the "power-up NCU" for a PCU connected to the bus is disabled. (The
2. Power up HMI on NCU with bus address 13 (see above)
3. Enter new NC address via the Commissioning/NC/NC address operating area and boot
4. Reactivate "Power-up NCU" again
Extended Functions
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Several Operator Panels on Several NCUs, Distributed Systems (B3)
OB100 parameters: ...(see also FB1/P3).
Note
An NCK address is not deleted with "Delete SRAM" (switch S3= position "1" on NCU).
NCU.
HMI powers up at the first connection configured in the NETNAMES.INI file)
NCU.
2.3 Several operator panel fronts and NCUs, standard functionality
131