Siemens Sinumerik 840C Diagnostics Manual page 22

1 Alarms
1.5.1 Alarm description
47 Wrong TO assignment lists
S
Scan
At POWER ON after modifying machine data
S
Effect
Interlocking of NC START
S
Explanation
Value of machine data 210, "Number of TO areas", is greater than 4
S
TO start numbers in NC MD211 to 214 have not been entered in ascending order
S
Input value in channel-specific NC MD 1040 to 1043 is greater than the number of TO areas under MD 210 or
is specified as 0 in the TO area
S
Remedy
Correct machine data
S
Where appropriate format user memory if machine data were input correctly or format the TO data in General
Reset mode
S
POWER ON
48 Data link to PLC not ready
S
Effect
Interlocking of NC START
S
Interlocking of NC Ready relay
S
Interlocking of Mode Group Ready
S
Machining stops
Explanation
During the start-up synchronization or data exchange between interface-CPU (IFC) and PLC CPU an error was
established, leading to the alarm. Data exchange between NC and PLC is still possible but the link to the pro-
grammer via the interface is not possible.
Remedy
Error fine coding can give information on further error sources; in addition, check whether alarm 43 is present.
Note
Applies up to SW 2 only
49 NC in general reset
Scan
POWER ON
Effect
None
Explanation
The software has recognized that the control is in general reset mode.
Remedy
Leave general reset mode
50 Flex. memory incorrectly configured
50 Insufficient memory for block buffer
Scan
On pressing NC Start
Effect
Interlocking of machining
Interlocking of "NC Start"
Explanation
1. The channel-specific machine data 6100* that defines the number of block buffers in a channel is not in the
permissible range.
2. No memory has been made available (MD 60014) for loading of drive software (MD 60003 or 60004).
Remedy
Check and correct the values of the machine data.
Note
Alarm Insufficient memory for block buffer (with SW 4 and higher)
Alarm Flex. memory incorrectly configured (with SW 5.4 and higher)
57 Drive link failure
Scan
Cyclic
Effect
Interlocking of NC Ready, NC Start, Mode Group Ready, NC Stop
Explanation
Internal software error or ring programming for GI or gantry axes.
S
Remedy
Eliminate ring programming for GI or gantry axes
S
Notify service
1–14
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Siemens AG 2001 All rights reserved 6FC5198–jAB40
SINUMERIK 840C / SIMODRIVE 611–D (DA)
04/96
07/97
POWER ON
POWER ON
POWER ON
POWER ON
POWER ON
POWER ON