Siemens SINUMERIK FM-NC Installation And Startup Manual page 81

07.98
03.96
Problems during
MMC100
If the MMC100 cannot establish a link to the NC, the message: "wait for NCU
power-up
connection:"x" seconds", "x" = 1 to 60 appears on the screen. If a connection
has still not been established after this time, then rebooting takes place soon
after. Check the following:
S
S
S
MMC102/103
If the MMC102/103 does not power up (screen remains dark), the 24V DC
power supply must be checked. If the power supply is present at the power unit
on the MMC102/103 and the seven-segment status display on the rear panel
does not light up, then the MMC102/103 module is defective.
If the MMC102/103 powers up, but cannot establish a link to the NC, then
"Communication to NC failed" is displayed in the message line at the bottom.In
this case, please check the following:
S
S
S
Note
MMC 101/102
The display remains dark after a successful power-up.
The decimal point lights up during hard disk access operations.
MMC 103
An 8 is displayed after a successful power-up.
The decimal point lights up during hard disk access operations.
If the error message "Corrupt SWAP File!" appears under Windows 3.11, a new
swap file (20 MB) must be created under the standard Windows user interface.
 Siemens AG 2000 All Rights Reserved
SINUMERIK 840D Installation and Start-Up Guide (IAD) – 04.00 Edition
Is the SINUMERIK 840D (NCU module) ready to operate (digit "6" on status
display)?
Is the MPI cable inserted, is cable attached properly to connector?
If the reset button of the NCU was pressed again during power-up (e.g. as
performed during a software upgrade [position 1 / general PLC reset]), the
control system must be switched off and on again before the MMC can be
powered up successfully.
Is the 840D (NCU module) ready for operation (digit "6" on status display)?
Is the MPI cable inserted, is cable attached properly to connector?
Is the baud rate in the Start-up/MMC/operator panel menu set correctly? It
must be set to 1.5 Mbaud (password for protection level 2 required).
5 Power On and Power-Up
5.2 Power on and power-up
5
5-81