ProSoft Technology PS-QS-1x10-0781 - Manual (Page 75)

FieldServer Configuration Manual Page 75 of 90
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Note: Titles in brackets indicate aliases
Appendix B.4.1. Common Information
Section Title
FieldServer
Column Title
Function Legal Values
Title
Allows user to add title to main menu if desired. Title text may not
contain spaces
Title Text
Cache_Age;
(Cache_Age_Timeout)
When poll block caching is used, data previously polled and stored in an
internal data buffer is returned to the Server, providing the data is not
too old. This parameter specifies the length of time cached data is valid.
Time in
seconds, 300s
Cache_Size* Specify size of Cache 0-1000; 80
Cache_Time_To_Live
Used for Port Expansion. A cache is created for data from a Node for
which no Map Descriptor is configured. If this data is not accessed for
longer that the time specified by this parameter, the cache will be
cleared.
Time in
seconds, 300s
Appendix B.4.2. Data Arrays
Section Title
Data_Arrays
Column Title
Function Legal Values
Data_Array_Name
(DA_Name)
Provides name for Data Array
Up to 15 Alpha
Numeric Characters
Data_Format Provides Data Format
INT16, INT32, or
BYTE; Specifies size of
source value when
scaling
FLOAT;
specifies
floating point format
for preloaded data in
buffer.
Data_Array_Length
(Buffer_Length)
Number of Data Objects 0-10000
Data_Array_Function* Special function for the Data Array
Refer to table in
Appendix B.4.3, None
DA_Function_After_Store
If this parameter is specified, when a value different to the
current value is written to the Data Array it will be stored in
the FieldServer’s Non-Volatile Memory. On start-up this
value is loaded from the Non-Volatile Memory into the
Data Array. This value is only stored 3 times a minute, so if
more writes than that are done, the values will be stored in
the Data Array, but not to the Non-Volatile Memory.
Storing this value has performance impacts, so care must
be taken to store this value only if needed. Refer to Section
0
Non-Volatile, -