Siemens SINUMERIK 808D ADVANCED Operating Instructions Manual page 85

18050 INFO_FREE_MEM_DYNAMIC
- Display data of free dynamic memory
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The data is used for
Description:
a)
the user for each channel after cold restart.
b)
The data cannot be written.
The contents of the data state how much unbuffered memory is available per
channel for increasing the unbuffered user data storage area via MD.
One should check whether the available memory is sufficient before increas-
ing, for example, the number of LUDs, number of functional parameters, or the
size of the IPO buffer.
If necessary, proceed step by step:
•
•
•
On the first NCK startup or cold restart of the control (=deletion of user
data), MD18210 $MN_MM_USER_MEM_DYNAMIC is set by the NCK software so that at
least the preset value results for MD18050 $MN_INFO_FREE_MEM_DYNAMIC.
That is, the value is automatically increased if the initial value of MD18210
$MN_MM_USER_MEM_DYNAMIC is too low.
The following also applies to multichannel systems:
•
•
•
'If necessary' in the previous sentences means that the adjustment is auto-
matic if the channel/axis could not be activated with the current values of
MD18210 $MN_MM_USER_MEM_DYNAMIC/$MN_INFO_FREE_MEM_DYNAMIC.
Siemens Controls
Parameter Manual
Operating Instructions, 08/2013, 6FC5397-8EP40-0BA0
1310720
the manufacturer's presetting of the memory size [ bytes ] available to
Displaying the available dynamic memory [ bytes ]
increase by 1, note (old) value
NCK startup (= 'warm start' or NCK reset), read off new value
memory requirement = new value - old value
The preset value applies to each possible channel. That is, if there are
ten possible channels, MD18210 $MN_MM_USER_MEM_DYNAMIC is set by the NCK
SW so that at least the 'preset value* ten' results for MD18050
$MN_INFO_FREE_MEM_DYNAMIC.
On activation of a channel, MD18210 $MN_MM_USER_MEM_DYNAMIC is increased
if necessary so that the memory free at the time of activation continues
to be free (provided that the memory structure permits this) after the
channel has become active.
The activation of the maximum possible number of axes is ensured by
increasing the data MD18210 $MN_MM_USER_MEM_DYNAMIC if necessary so that
memory free at the time of activation continues to be free (provided that
the memory structure permits this) after the axis has become active.
N01, N02, N05
DWORD
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Machine data
2.2 General machine data
S7
PowerOn
ReadOnly
85