Parameter Manual
Operating Instructions, 08/2013, 6FC5397-8EP40-0BA0
85
Machine data
2.2 General machine data
Description: The data is used for
a) the manufacturer's presetting of the memory size [ bytes ] available to
the user for each channel after cold restart.
b) Displaying the available dynamic memory [ bytes ]
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:
• increase by 1, note (old) value
• NCK startup (= 'warm start' or NCK reset), read off new value
• memory requirement = new value - old value
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:
• 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.
'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.
18050 INFO_FREE_MEM_DYNAMIC N01, N02, N05 S7
- Display data of free dynamic memory DWORD PowerOn
-
- - 1310720 - - ReadOnly
Siemens Controls
To Next Page
Loading...
