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3.8.4
Capacity of internal memory
Depending on parameter settings (DLXPARA) the individual areas of inter-
nal memory have the following capacity:
Device parameters:
Spontaneous events:
Resets (billing data):
Registration period Tm1: Min.
Registration period Tm2: Min.
where:
No. of bytes in Tmx:
No. of sectors in Tmx:
No. of entries in Tmx:
Due to the composition of FLASH memory devices a minimum of sec-
tors of 65536 Bytes each is allocated to each area (the exception be-
ing the device parameters with 1 sector). When registration period
Tm2 is disabled, no sectors will be reserved for the second periodic
buffer (using 100% for Tm1). The spare sector used for internal sector
management is in this case used for the Tm1 buffer (thus "memory
share for Tm1" is set to 10).
1 set of parameters
Min. 780
Min. 20 (depends on the number of defined input
channels and totals)
No.
of
sectors
+
12
(No.
of
bytes
in
No.
of
sectors
+
12
(No.
of
bytes
in
4: for values with 4 stored digits
6: for values with 6 or 8 stored digits
Round (memory share for Tmx x 9)
(depends on the parameters for internal memory
shares in DLXPARA)
e.g. memory share for Tm1 = 56%
→ No. of sectors in Tm1 = 5.
1..32
(depends on the parameters for storage alloca-
tion: number of inputs, totals, apparent demand
and cos( ϕ ) in registration period Tm1 or Tm2)
×
in
Tm1
65522
×
Tm1
No.
of
entries
in
Tm1)
×
in
Tm2
65522
×
Tm2
No.
of
entries
in
Tm2)
35
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