Siemens Sinumerik 840C Diagnostics Manual page 19

04/96
07/97
10 UMS error
S
Scan
At POWER ON
S
Effect
Interlocking of NC START
Explanation
The UMS loaded in NCK has a faulty internal structure.
Remedy
Reinstall UMS on hard disk.
Note
Applies up to SW 2 only
10 Startup after software upgrade
S
Scan
At POWER ON
S
Effect
The NCK–internal static memory has been deleted.
Explanation
There are two causes for the alarm:
– A new NCK software version has been loaded (only when booting for the first time after software upgrade)
– The NCK–internal static RAM has failed (e.g. because of an empty back–up battery); alarm 5 is then dis-
played additionally.
Remedy
The complete NCK unit must be started up again.
Note
Applies as from SW 6
11 Undervoltage on secondary side
Scan
POWER ON
Cyclic
Effect
Short circuit on secondary side or overloading of 5V voltage
Caution: The error may have been signalled during initial start-up without the error being present (hardware wi-
ring).
Explanation
When the error occurs the shutdown routine is activated to achieve a safe state.
Restart:
Data loss has occurred, obligatory re-installation is activated
Remedy
Eliminate the hardware error
Re-install
20 Cam activation wrong
Scan
POWER ON
S
Effect
Interlocking of NC start
S
Interlocking of Mode Group Ready
Explanation
Software cams can only be used for linear axes.
Remedy
Correct the PLC user program
26 Part program block >120 char. V.24
S
Scan
On reading data into the NC via the computer link
S
Effect
Computer link transmission interrupted
S
Last block declared invalid
Explanation
The part program block that has been read in contains more than 120 characters. Only the characters actually
stored are counted (no spaces, no CR, etc.)
Remedy
Divide the block into two or more blocks. The number of the faulty block is displayed.
Note
Applies up to SW 2 only

Siemens AG 2001 All rights reserved 6FC5198–jAB40
SINUMERIK 840C / SIMODRIVE 611–D (DA)
1 Alarms
1.5.1 Alarm description
POWER ON
POWER ON
Cancel
POWER ON
POWER ON
1–11